Frequently Asked Questions (FAQ)

Yes, stainless steel pools are fully customisable, tailored to the customer’s preferences and the available space. They offer almost unlimited possibilities in terms of shape, size and features, such as steps, benches and counter-current systems.

Yes, under certain extreme conditions, even stainless steel can rust—for example, when exposed to harsh chemicals, deep scratches, or neglected maintenance. However, this is the exception rather than the rule. With proper care and regular maintenance, rust can be reliably prevented. That is why IMAGINOX thoroughly trains clients upon the handover of each project and also provides long-term service—so you are never on your own when it comes to caring for your pool or hot tub.

In fact, stainless steel is one of the most durable materials available for the manufacture of pools and hot tubs. And why?

It lasts for decades without any issues. A properly maintained stainless steel pool or hot tub can easily last 50 years or more—without the need to replace the liner, repaint, or renovate the surface.

It resists corrosion, UV rays, and chemicals. Unlike concrete, it won’t crack; unlike plastics, it won’t age or fade; and unlike liners, it won’t tear. The protective layer of chromium oxide can repair itself if damaged.

Hygienic and easy to maintain. The smooth, non-porous surface of stainless steel prevents the buildup of bacteria and algae—chemical usage is lower and cleaning is much easier.

Aesthetics that last. Stainless steel retains its luxurious appearance throughout its entire lifespan—no peeling tiles, no discoloration, no wear and tear.

In short: stainless steel is a once-and-for-all investment. With the right choice of material and regular care, you’ll have a pool or hot tub that will look great and function reliably for generations to come.

You should choose a stainless steel pool because it is extremely durable and hygienic, and easy to maintain. It offers an exclusive look and can be customised. Thanks to its excellent thermal conductivity, it is also energy-efficient, leading to long-term savings and increasing your property’s value.

A stainless steel pool combines a luxurious appearance with long-lasting durability and ease of maintenance. Although the initial investment is higher, this pays off in the long term due to the pool’s durability and lower operating costs. For hotels and wellness centres wanting to offer their clients the best in quality and design, a stainless steel pool is an excellent choice.

Yes, stainless steel pools are usually significantly more expensive than conventional pools made of materials such as plastic or concrete due to the high cost of materials and manufacturing, but they are often considered a durable luxury option with potentially lower long-term operating costs thanks to better heat retention and reduced susceptibility to algae growth.

However, it is important to consider the long-term perspective: a stainless steel pool has a virtually unlimited lifespan, so there is no need to replace the liner or renovate it after 10–15 years as with other pools. It also has lower maintenance requirements thanks to its smooth surface, which means fewer chemicals are needed, cleaning is easier and labour costs are reduced. The entire system’s thermal insulation properties can also lead to energy savings during heating. In the luxury segment, a stainless steel pool can increase the property’s value and enhance its prestige. Investing in stainless steel therefore pays off, particularly where the pool is expected to be used intensively and long term. Many investors view stainless steel as a long-term economic choice — the higher initial costs are offset by the minimal risk of breakdowns and the lower future operating costs.

Yes, stainless steel pools are ideal for people with allergies because their smooth, non-porous surface prevents bacteria and algae from adhering to it. This ensures very high hygiene standards, reduces the need for harsh chemicals and minimises skin and respiratory issues.

Thanks to these properties, stainless steel pools are ideal for wellness facilities catering to clients with dermatological issues or allergies. The cleaner water and lower chemical usage mean that swimming in a stainless steel pool will not irritate the skin or eyes, and there will be no unpleasant chlorine odour.

Stainless steel pools are very eco-friendly. Stainless steel is 100% recyclable and has an extremely long lifespan. It requires minimal maintenance and its smooth, non-porous surface reduces the need for chemicals.

Stainless steel pools meet high environmental standards, and their long lifespan, recyclability and low operating costs make them a sustainable solution for commercial operations and private investors alike. The water and energy savings that can be achieved are also a key selling point for environmentally conscious hotels and wellness centres.

Stainless steel pools have a number of significant advantages over conventional pools:

-Exceptional durability and stability: Stainless steel is highly resistant to mechanical and chemical stress. Unlike plastic, it does not warp or degrade under UV radiation. Unlike concrete, it does not crack in freezing temperatures. Unlike liner pools, it will not wear through or leak water. The pool retains its appearance and functionality for many years without requiring major repairs.

-Hygiene and cleanliness: The smooth surface of stainless steel prevents algae growth and stops dirt from accumulating as it does on rougher surfaces. Consequently, the water in the pool is more hygienic, requires less chlorine and is easier to clean. Unlike tiled pools, there are no issues with dirty seams.

-Easy maintenance: Stainless steel pools require no paint, liners or special coatings. There is also no risk of the liner tearing or tiles falling off. Maintenance is essentially limited to water care and the occasional clean of the surface, saving the operator both time and money.

-Faster installation: Surprisingly, the speed of installation is also an advantage of stainless steel pools. The pool is manufactured in a factory and simply needs to be installed and connected on-site, which takes just a few days. By contrast, it takes weeks or even months to build and cure a concrete pool. This means less disruption to hotel operations during renovations and a shorter construction time for new wellness facilities.

-Modern design and versatility: Stainless steel pools have a luxurious, modern look that can attract guests. The material allows for elegant features such as overflow edges around the entire perimeter for an infinity effect, integrated designer steps, and glass walls or floors. All of these features can be executed with great precision. Stainless steel pools have a very high aesthetic value.

-Return on investment: Taking the above points into account, a stainless steel pool is a valuable addition to any property or facility. Guests perceive stainless steel pools as a sign of quality. From an operational standpoint, the long lifespan and lower maintenance costs mean that the initial investment is spread over a much longer period than with less durable pools.

It is, of course, fair to mention the disadvantages as well: the main ones being the higher purchase price and the need for careful water maintenance (stainless steel is less forgiving of chemical imbalances than plastic). Overall, however, stainless steel is the better option for commercial purposes (such as hotels and spas) due to its reliability, prestige and hygiene, which are key factors in this sector.

Over the past decade, we have completed hundreds of stainless steel pool projects. As a leading European manufacturer of stainless steel pools and wellness equipment, we operate in many markets around the world. This has given us extensive experience with unique projects of various sizes and levels of complexity. We have built everything from smaller hotel and rooftop wellness pools to large spa complexes.

IMAGINOX is a renowned manufacturer with many references, and we can provide interested parties with a portfolio of completed pools, including photographs. We can also arrange a visit to a reference installation if desired.

Thanks to its smooth, seamless surface, a stainless steel pool is extremely hygienic and easy to maintain. It guarantees unmatched durability without fading or cracking and is highly resistant to corrosion caused by chlorine and UV radiation. It also offers a unique, modern aesthetic with customisable design options, making it a valuable long-term investment. Concrete or tiled pools, on the other hand, are more susceptible to maintenance issues such as cracks and fading, and require regular repainting.

Yes, some preparation work is necessary for construction. The specific requirements vary depending on the location of the pool:

Outdoor pool: A construction pit must be excavated and a reinforced concrete foundation slab (or footings) built for the pool to sit on. This slab must be perfectly level and load-bearing. Additionally, the necessary connections must be installed, particularly an electrical connection for the equipment, as well as water and waste lines for the filtration system and refilling. If you plan to use the pool during the colder months, you should also plan for the installation of a water heating system, and a pool enclosure or thermal cover to minimise heat loss, if necessary.

Indoor Pool: Preparing for an indoor pool is usually more complicated. Often, it is necessary to make structural modifications to the space, such as removing the floor where the pool will be located and creating a recess to accommodate the pool basin. Ventilation and moisture insulation of the pool hall must be addressed. Connections for electricity, water, sewage and HVAC must also be prepared. In practice, we collaborate with your general contractor: our designer will prepare the construction readiness documentation and ensure that the foundation slab has the correct parameters and utility openings (see also question no. 22 regarding collaboration with architects and structural engineers).

Once these preparations have been completed, the installation of the stainless steel pool can begin.

Yes, it is possible to build a pool on hard-to-access terrain, often using flexible modular systems (for example, constructing a pool without concrete) or prefabricated pools. The latter require less earthwork, but special solutions are needed for sloped terrain, such as retaining walls or gabions, and careful planning is required for access and the subsoil, including drainage and compaction. If it is not possible to transport a finished pool shell to the site using a large crane, the pool can be delivered in several segments and welded together on site. This eliminates the need for extensive landscaping or a wide access area. There are also special modular designs that allow for pool construction without the need for large-scale concrete structures.

However, if welding is required on site, suitable shelter and protection from the weather must be provided during installation. On sloped terrain, retaining walls or gabions are often built and emphasis is placed on the site’s proper foundation and drainage. Consequently, a stainless steel pool can be installed where a traditional monolithic pool could not be transported.

From order confirmation to completion of the finished pool, the total time is usually several months. It typically ranges from four to six months, depending on the complexity of the project and current production capacity. The process can be divided into several phases:

-Design and Approval (1–2 months): Once the contract has been signed, our project manager will draw up a detailed design and construction readiness plan. We will then hold a coordination meeting with your construction company and, if applicable, your architect. Once all requirements have been incorporated, we will prepare the final pool drawings for customer approval.

-Pool manufacturing (approx. 2–3 months): The stainless steel pool is manufactured at our facility. This involves cutting and forming sheet metal, as well as welding and grinding. Delivery of a stainless steel pool takes approximately three months from the order date, depending on the selected model.

During this time, you can prepare the site for installation.

-Transport and installation (1–4 weeks): The finished pool is transported to the site. Installation is usually quick; the prefabricated stainless steel tank can be installed in just a few days using a crane. If the pool is welded from multiple parts on site, assembly typically takes one to two weeks. Meanwhile, the technology (filtration, heating, etc.) is connected and the finishing work around the pool is completed.

–Commissioning and handover: Once the pool is assembled, we fill it with water to test for leaks and check that all the systems are functioning correctly. We then perform a stress test of the circulation system and carry out any necessary fine-tuning of the automatic systems. Finally, we hand over the pool to the customer, providing them with all the necessary documentation and operator training, after which they can put the pool into operation.

In total, it will take approximately 3 to 6 months from ordering to the pool being ready for use. This may be faster for simpler projects; conversely, complex wellness pools may require more time (e.g. due to on-site construction modifications).

Depending on the size and complexity of the pool, the manufacturing process itself (from start to finish) usually takes several weeks to a few months. The typical lead time is around 8–12 weeks of production. During this period, steel sheets are processed, welded, ground and leak-tested. Smaller hot tubs or simpler-shaped pools can be manufactured more quickly (in ~4–6 weeks), whereas very large or complex pools may require more time. Production capacity must also be taken into account during a given period — lead times tend to be longer during the peak season (before summer). In any case, producing a stainless steel pool is a precise process that cannot be rushed, since the quality of the welds and workmanship is crucial.

Yes, this is possible and a relatively common solution during renovations. There are two main methods:

-Complete replacement of a commercial pool: The original pool is completely demolished and replaced with a new stainless steel one. This may require modifications to the dimensions of the pool pit, but the advantage is that you will have a brand-new pool with a long service life.

-Inserting a stainless steel liner into the existing pool: If possible, a stainless steel liner can be fabricated and installed within the original pool structure. This method is typically used for older concrete pools, where the walls and base are lined with stainless steel sheets that are welded together to create a waterproof liner. This stainless steel ‘liner’ serves as both the waterproofing and the pool surface. The original structure therefore only serves as support. The advantages are that demolition is avoided and, often, the need for a new building permit as well.

In both cases, careful design of the connections for technology, overflows, etc. is necessary. Experience shows, however, that renovating with a stainless steel liner is quick and effective — an old pool can be transformed into a modern stainless steel one during a relatively short shutdown. We recommend arranging a consultation to assess the condition of the existing structure and possible solutions.

Filtration and water treatment technology: Outdoor pools are often larger and may be subject to higher levels of contamination, such as leaves and dust, so more powerful filtration systems and automatic water refilling systems are usually installed. Indoor pools, on the other hand, require dehumidified air and a stable climate, which outdoor pools do not provide.

-Drainage and overflow: Outdoors, it is necessary to consider factors such as rainwater drainage around the pool and the correct slope of the terrain. While these are not issues indoors, architectural considerations such as overflow channels integrated into the floor around the pool and non-slip surfaces must be addressed for safety reasons.

-Integration into the building: As an indoor pool is often part of the building, structural considerations must be addressed, such as the static loads on ceilings, the waterproofing of the construction pit and access for utilities. Careful planning of construction readiness is essential, and collaboration with architects is key here. By contrast, an outdoor pool is built into the garden terrain, which is a simpler technical process

-Winter operation: As previously mentioned, in order to function in winter (primarily to prevent freezing), an outdoor pool must either be winterised or equipped with heating and a cover. For indoor pools, the building’s overall heating system takes care of this; however, ventilation of the pool area is necessary to prevent excessive humidity and condensation.

-Utilizing the Sun and the Environment: Outdoor pools can be heated using solar panels, or the sun can warm the water and surroundings directly. The surrounding environment, such as the garden or view, is also part of the experience. Indoor pools often feature architectural integration into the building’s interior, such as a wellness area, lighting and possibly a glass wall with an outside view.

Although pool materials and water quality may be the same, operating conditions and technical requirements differ. Outdoor pools must withstand frost and debris from the surroundings, whereas indoor pools require solutions for humidity control and integration into the building structure. When designing, we always consider whether the pool is indoors or outdoors and select appropriate details accordingly (e.g. overflow type, insulation and dehumidification technology).

Yes, to a certain extent, but it depends on the stage at which the project is in its implementation process. If the pool is still in the design or planning phase, the parameters can usually be adjusted (subject to mutual agreement and possible adjustments to the price or deadlines). However, once production of the stainless steel pool shell has begun, the options for changes are limited. We can usually accommodate minor changes to the equipment (e.g. adding a jet or changing the type of lighting), but significant changes to the dimensions or shape may no longer be feasible without substantial additional costs.

The standard procedure is that the customer receives the final pool drawings for approval prior to the start of production. Once the production documentation has been approved, the pool is sent to production. Subsequent changes may result in delays and additional costs. In the worst case, it would be necessary to replace parts that have already been manufactured with new ones. Therefore, we always recommend finalising all requirements and details carefully during the design phase. If the need for modifications arises during implementation (perhaps due to unexpected construction circumstances), we will address the situation and propose possible alternatives. The terms and conditions usually specify the procedure and any fees for changes after the contract has been signed.

Yes, close collaboration with architects, designers and structural engineers is crucial for the success of a stainless steel pool project, and it is something that we actively seek out. The process usually proceeds as follows:

-Project Preparation: Even in the early stages of designing the pool, we communicate with the architect to ensure it fits into the building’s overall spatial concept. We share technical documentation, dimensions and requirements (e.g. regarding construction readiness and equipment placement) with the architect, who incorporates these into the construction drawings. If the architect is designing aesthetic elements, such as pool surround tiling or hall lighting, we coordinate the details of their connection to the stainless steel tank.

-Structural engineering and construction: The structural engineer will assess whether the surrounding structure can support the weight of the pool and water, which is particularly important for rooftop or upper-floor pools. We provide precise data on the weight of the water and stainless steel pool, as well as the location of any anchor points. Working together with the structural engineer, we determine how to support the pool and anchor it to the slab to ensure everything is safe. We also have experience with unconventional installations, such as pools on the roofs of skyscrapers or in historic buildings, and hot tubs or pools on boats. We can therefore advise structural engineers on the optimal solution.

-Coordination Meetings: During the project, we hold meetings (in person or online) with our project manager, the general contractor, the architect and other relevant professionals, such as those specialising in mechanical, electrical and plumbing (MEP) systems and water systems. These meetings are used to coordinate the schedule (e.g. when the pool will be installed and when the pipes will be connected) and resolve any conflicts or changes.

-Supervision and consultation: Once the construction site is ready, with the foundation slab and equipment shaft in place, we will visit to ensure that everything meets our requirements. If not, we will work with the builders to propose a solution. During pool installation, the architect will oversee visual details such as grouting around the pool edges, while the structural engineer will verify proper anchoring. We work as a team to achieve the best possible result.

The collaboration is therefore multidisciplinary. Our company employs its own structural engineers and designers who prepare manufacturing documentation and can communicate with external architects and engineers to ensure everyone is “on the same page”. The result is that the pool becomes an integral part of the building, both aesthetically and technically (in terms of structure and safety). This level of coordination is standard practice for us — all our projects are custom-designed in close collaboration with architects and engineers. Clients can therefore rest assured that the pool will not conflict with other elements of the building and that the project will proceed smoothly.

We purchase stainless steel from trusted European suppliers who specialise in producing alloys for use in the chemical and food industries. One of our sheet metal suppliers is Italinox, for example. We typically use austenitic stainless steel grade 1.4404 (AISI 316L) to manufacture our pools, or an equivalent with the designation V4A. This highly corrosion-resistant steel is suitable even for chlorinated and salt water. For particularly demanding conditions, such as thermal or highly saline water, we can also use special alloys, such as stainless steel with titanium additives.

We provide test reports and certificates for every material delivery (so-called 3.1 material certificates according to EN 10204), which specify the chemical composition and mechanical properties of the steel. We can provide these certificates to clients or authorities upon request during the final inspection. These certificates ensure clients that the material used meets the declared quality standards (e.g. the molybdenum content in 316L steel for chloride resistance). In addition, we provide certificates for other built-in components (e.g. pumps and filters have CE declarations of conformity). Our company holds welding and production quality certifications (TÜV, etc.), meaning the entire process, from material to final product, is documented by qualification certificates. Thanks to this meticulous approach, our pools meet all the relevant standards and regulations.

Stainless steel pools can be made to any shape or size with millimetre-level precision. Everything is custom-made and we plan every pool in detail. Here’s how we proceed:

-Our designers request precise documentation of the space (Survey of the structural opening, 3D model from the architect, etc.). They then use CAD software to design the pool to meet these tolerances. If the required tolerances are extremely strict, we account for this during production. For example, we might equip the pool frame with adjustable supports so it can be fine-tuned on site.

-Production takes place on modern CNC machines – Metal sheets are laser-cut with precision down to fractions of a millimetre and wall bends are at exactly the required angles. As a result, the final pool corresponds exactly to the designed geometry. Certified welders with industry experience perform the welding, ensuring that the welds are strong, dimensionally accurate and clean.

-For very complex shapes or large pools, we can opt for a segmented construction – The pool is made up of several parts that are manufactured separately and then bolted or welded together on site. This enables us to create shapes that would not fit through a doorway or onto a truck as a single unit. The joints are designed to be virtually invisible in the finished pool.

-Continuous quality control during production is a given. We inspect every part against the blueprint. Before final packaging, we perform a test assembly (also known as a pre-assembly) in the workshop to verify that all parts fit together perfectly. This eliminates any surprises on-site.

Thanks to these measures, we can realise even the most unique and challenging pool concepts. Examples include pools with organic shapes, cantilevered structures and pools that fit precisely into limited spaces with tolerances of just a few millimetres. Our approach is always the same: if it can be manufactured and assembled technically, we will find a way to do it. The result is a pool that corresponds to the original architectural design down to the smallest detail.

Everything is custom-made. If the technical aspects allow it, the design is planned and drawn up.

While every project is unique, the general construction schedule for a stainless steel pool can be summarised as follows:

-Design Phase (Weeks 1–4): Once the contract has been signed, the design work can begin, including site surveying, preparing pool drawings and specifying the technology. Building permits are processed in parallel if necessary. By the end of this phase, the drawings will have been approved and the construction pit/foundation will be ready.

-Site Preparation (Weeks 5–8): Site preparation takes place on site and includes excavation and pouring of the foundation slab, construction of the equipment room or shaft, and connection of utilities. This phase is typically managed by the investor’s construction company, while we oversee the process and ensure the work is carried out correctly.

-Pool Manufacturing (Weeks 5–16): Meanwhile, at our facility, we manufacture the stainless steel pool shell and prepare the equipment, such as control panels and filtration units. This phase takes approximately two to three months. This often overlaps with the construction work to ensure the time is used efficiently.

-Transport and Installation (Weeks 17–18): Once production is complete, an installation date will be scheduled. The pool is transported to the site and positioned using a crane or by assembling the segments. Next, the segments are welded together (if applicable), and all piping and cabling is connected to the pool. A leak test is then performed by filling the pool. Installation of the pool itself is usually very quick: for example, a complete stainless steel pool can be assembled within a few days and larger projects within two weeks.

-Technology Installation (Weeks 17–19): The equipment, including the filtration system, pumps, heating and ventilation, is installed in the utility room in parallel with the pool. It is connected to the pool via pipes and cables, and then tested.

-Finishing work (Weeks 19–20): The construction work around the pool is finished (paving, tiles, hall lighting, etc.) and the final clean is carried out. The pool is filled with water, the filtration system is switched on and the chemical levels are adjusted.

-Handover and Trial Operation (Week 20): Staff training and the handover of documentation take place, as does the official handover of the pool. The pool can then begin operating at full capacity with guests. It is recommended that the first few weeks are treated as a trial period, during which the filtration modes, chemical dosing, etc. are fine-tuned.

Overall, from the start of the project (after the building permit is issued) to opening, the process takes ~5–6 months, depending on the scope. The actual installation phase is relatively short, but preparations, permits and manufacturing take up a lot of time. This schedule can be adapted to the specific circumstances of each project: for smaller pools, some steps can be shortened, while for larger wellness centres, some steps (e.g. construction) may take longer.

Yes, stainless steel pools are essentially winter-resistant and can be used in winter, provided that special measures are taken. These include good thermal insulation and heating, such as heat pumps, to prevent frost damage and ensure that the water remains at a comfortable temperature.

It is essential to ensure:

-Water heating: The pool must have a heat source, such as an electric boiler, heat pump or heat exchanger connected to a boiler, to keep the water at a comfortable swimming temperature of 26–30 °C, even in winter.

-Thermal insulation: As the stainless steel wall has high thermal conductivity, it is necessary to properly insulate the pool from the outside (e.g. using polyurethane panels or spray foam). Insulating the bottom and walls minimises heat loss to the surrounding soil or structure. Covering the water surface with a thermal or slatted cover overnight also significantly reduces cooling of the water.

Frost protection: If the pool is not heated in winter, it is necessary to ensure that the water does not freeze, as frozen water could damage the jets or pipes. During winter operation, therefore, we keep the filtration system running, even at low temperatures, to ensure that the water circulates and does not freeze in the pipes, and we maintain a minimum temperature.

Provided these conditions are met, you can use the pool during the winter months. Unlike some materials, stainless steel itself is not damaged by frost—it does not crack. Proof of this can be found in stainless steel outdoor hot tubs that are operated year-round in high-altitude resorts, for example. However, if you do not wish to use the pool in winter, it is advisable to winterise it in the same way as other pools (lowering the water level, draining the pipes and adding a winterising solution to the water).

Modern hotels and wellness centres often incorporate experiential and relaxation features to enhance their appeal to guests. Popular amenities include:

-Massage features: There are various types of hydromassage, such as massage jets in the walls for a back massage, air bubbles at the bottom of the pool for a bubble bath, and air massage loungers or benches integrated into the pool where guests can relax and enjoy a bubble massage.

-Water spouts and waterfalls: Spouts (water curtains) for neck and shoulder massages are among the most popular attractions. Small waterfalls and fountains are visually appealing and serve decorative and therapeutic purposes.

-Counter-current systems and swim trainers: For smaller hotel pools, a counter-current system is often in demand to allow fitness swimming in place. This enables guests to enjoy swimming against the current, even in smaller pools.

-Lighting and audiovisual effects: Colourful underwater LED lighting has almost become the norm today — it sets the mood in the evening. Some wellness centres also install underwater speakers to play music or synchronised light shows.

-Relaxation zones and pool surroundings: Even though they aren’t directly in the water, comfortable lounge areas around the pool and separate hot tubs are essential amenities. Some hotels also have a steam room or sauna by the pool, known as a ‘wet zone’, to enhance their wellness offerings.

In short, guests expect more than just the pool itself. Therefore, it is important to consider who the pool is for. For example, for families with children, a small kids’ wading pool or slide may be necessary, whereas for a luxury resort, perhaps an infinity edge with a view would be more appropriate. We’d be happy to advise you on selecting the optimal attractions to ensure the pool meets the expectations of your target clientele.

Watertightness is an essential property of a pool. With stainless steel technology, this is achieved by combining high-quality welding with thorough testing:

-Precise welding: All joints in the stainless steel sheets are fully welded, with a continuous weld along their entire length. We use TIG/MIG methods to guarantee a homogeneous weld. Critical areas (such as corners and overflow edge connections) are often double-welded from both the inside and outside. Our welders are fully certified and have extensive experience in the field. Each weld is visually inspected upon completion and key welds undergo a penetrant test (capillary test) to check for microcracks.

-Sealing of penetrations: All wall penetrations, such as jets, lighting, skimmers and piping, are designed to be watertight. This is achieved either by welding a collar to the pool shell and subsequently sealing the flange, or by using inserts with special sealing rings. Lighting penetrations, for example, have double O-rings and are secured with a stainless steel flange.

-Load tests: We test every pool by filling it with water prior to handover. The pool is filled to capacity and left for a specified period — usually 24–48 hours — to check for leaks. All joints and penetrations are monitored during this time. If the pool is to be installed indoors, these tests are performed at the factory prior to transport (to rule out leaks before installation).

-Certification and Standards: Our pools meet the watertightness requirements set out in the relevant standards, such as the German DIN 19643 standard for public swimming pools. Following a successful watertightness test, we provide a report that can be used as the basis for the final inspection.

Thanks to these measures, the stainless steel pool is completely watertight. Unlike concrete pools, the material does not expand or contract in a way that causes cracks — the stainless steel tank is self-supporting and dimensionally stable, so leaks could only occur in the event of serious damage, which can be repaired by welding. Under normal operating conditions, there is no risk of the pool ‘leaking’. Proof of this is the 10-year watertightness warranty provided

We perform load tests on all pools before handover to ensure they have strong, high-quality joints.

Our stainless steel pools are designed and manufactured in accordance with all relevant standards and regulations applicable to public and private pools in their respective countries. In particular:

-European EN Standards: We adhere to European standards for pools, such as the ČSN EN 15288 series (Safety in swimming pools) and the ČSN EN 16582 standard (Private swimming pools – Structural requirements). For public swimming pools, we apply the requirements of EN 13451 (Safety of swimming pool equipment) and other relevant regulations, such as EN standards for water attractions.

-German DIN guidelines: We implement many projects in accordance with the strict German DIN 19643 guidelines for swimming pool water treatment and DIN 18820 (swimming pool structures). Alternatively, we work in line with the recommendations of the DGfdB (German Society for Bathing Facilities). These regulations typically exceed EU standards, ensuring top-quality water and safety. When exporting to Germany, Austria or Switzerland, complying with local standards and obtaining the necessary approvals from TÜV is standard practice.

-Czech and local regulations: In the Czech Republic and Slovakia, we comply with decrees issued by the Ministry of Health regarding swimming pools and saunas (e.g. Decree No. 238/2011 on hygiene requirements for swimming pools). These decrees cover parameters such as water quality, circulation, chemical dosing, lighting and slip resistance. All materials used in our pools are certified as safe for contact with drinking or pool water.

-Building standards and safety: The pool structure meets the relevant structural requirements (Eurocodes or national standards), such as water pressure on the walls and anchoring to the building structure. We also pay close attention to safety details, such as rounding off sharp edges in accordance with standards, ensuring that overflow grates are slip-resistant, and ensuring that the pool depth and diving boards comply with diving standards.

-Electrical and Mechanical Regulations: All electrical equipment, including pool lights and control panels, complies with the relevant standards. Underwater lights have an IP68 rating and residual current devices are also installed. All mechanical components are CE certified.

We provide a declaration of conformity and documentation with the pool, detailing which standards were applied. We can therefore guarantee that the pool will meet the requirements of health authorities, labour inspectors and other agencies during the final inspection and throughout its operation. We also follow the latest international trends, such as standards for pool accessibility (see question #32) and energy efficiency, and adapt our products to meet these requirements.

We prioritise slip safety, both inside the pool and in the surrounding area.

-Non-slip surface inside the pool: We supply stainless steel pool shells with a modified surface on the base and, where applicable, on the steps. These shells have a textured surface consisting of small, regular protrusions in the sheet metal that increase friction and prevent slipping. These protrusions are safe to the touch yet effective. Typically, the pool bottom and steps feature this anti-slip texture. In areas where people do not walk, such as at greater depths, the surface may be smoother, but we ensure slip resistance in all walkable areas. Our embossed sheet metal meets the relevant slip resistance standards (equivalent to Class C for wet surfaces).

-Pool surroundings – flooring: In collaboration with an architect, we design the surrounding flooring in the pool hall or on the pool terrace using anti-slip tiles or surfaces. We recommend materials with an anti-slip finish that are suitable for wet conditions, such as coarser ceramic tiles or textured stone. For sauna and wellness areas, we prefer wooden decking or grating. For example, teak or larch grating mats at the pool exit are warm to the touch and slip-resistant.

-Overflow grates: If the pool has an overflow channel, it is covered by a plastic or stainless steel grate. We use grates that have either a slip-resistant surface treatment or a special slat design to prevent bare feet from slipping.

-Operational procedures: In addition to the materials used, maintenance is also important. We provide operators with instructions to ensure that the floors around the pool are clean and free of oil or soap residues (e.g. from spa treatments), which could make them slippery. This also involves placing ‘Caution, slippery floor’ signs and ensuring there are sufficient drainage channels to prevent water from pooling.

Thanks to the combination of the right materials and proper maintenance, our pools and their surroundings are safe environments in which to move around. We have not recorded any slipping incidents in any of the pools we have built to date — we ensure this from the design phase.

Today, accessibility is standard, especially for public and hotel pools. There are several ways to ensure it:

-Gradual entry – access ramp: The pool can be equipped with a slightly sloped ramp with a non-slip surface, which can be used by people in wheelchairs with an attendant or by people with walking difficulties. Such a ramp requires the pool to be long enough to ensure the slope is not too steep. In a stainless steel design, the ramp can be integrated into the pool as an extended section with a non-slip surface.

-Pool lift (hoist): This is a device that is installed at the edge of the pool and mechanically lowers a person in a special seat into the water. We offer a choice of either a stationary pool lift, which is anchored to the floor and usually comprises a stainless steel structure with hydraulics, or a mobile lift that can be brought to the pool only when needed. This method is ideal for situations where it is not possible to build a ramp for structural reasons.

-Adjustable pool floor: The most modern option, albeit the most expensive, is a pool with a movable floor. This technology enables the floor of the pool to be raised and lowered using a mechanism. To enable barrier-free access, the floor can be raised to the level of the edge, creating a platform onto which a wheelchair user can drive. The platform can then be lowered to the desired depth, taking the user with it. The adjustable floor also allows the water depth to be set as required, for example for exercises in a rehabilitation pool. While this option is technically sophisticated, it provides maximum comfort and safety.

All these methods comply with accessibility standards. When designing a pool, we recommend the most suitable solution based on the intended use: a pool lift is often sufficient for a public pool (as it is less expensive), whereas a liftable floor is sometimes chosen for therapeutic or luxury pools. Additionally, stainless steel handrails and railings along staircases or ramps are standard to enable people with limited mobility to move around more easily. IMAGINOX pools have already been installed in several rehabilitation centres, so we have experience with these features.

We also prioritise guest comfort in terms of noise levels — no one wants to enjoy wellness in the midst of pump noise. Our solutions therefore minimise noise:

-Technology placement: All pool technology, including filter pumps, heat exchangers and blowers for attractions, is located in a separate, acoustically isolated utility room or shaft. The walls of the utility room can be fitted with acoustic insulation. Heavier machines are mounted on flexible mounts (rubber pads) to prevent vibrations from being transmitted to the structure. Consequently, motor noise barely reaches the wellness area. From outside, guests can only hear the muffled sound of water.

-Quiet pumps and blowers: We use modern, quiet pumps, which often have variable frequency drives and are practically inaudible at lower speeds. For air massage systems, we select blowers fitted with sound dampers. Although manufacturers specify pump noise levels of around 60 dB at 1 m, the resulting noise in the pool hall is negligible in an enclosed, insulated room.

-Pool water circulation: The movement of the water and the way it flows through the jets are designed to minimise noise, so there is no “sputtering” or cavitation sounds. The overflow system is usually quiet, with the water flowing smoothly over. For skimmer pools, we ensure that the water level is set correctly to prevent bubbling in the skimmer. The size of the jets ensures that they do not produce hissing sounds; for higher flow rates, we select larger jet diameters

-Nighttime operation: If the hotel uses night-time filtration, this can be set to a lower power setting or at shorter intervals to ensure complete quiet at night. Some smart systems can also activate noisier features, such as waterfalls, only during certain hours.

Overall, it can be said that the average wellness guest barely notices any noise from the technology. The only sounds in the pool hall are those of flowing or falling water (from spouts, etc.), not machinery. We can verify noise levels through measurements and can confirm that our installations comply with health and safety noise limits. For example, in the pool hall’s quiet mode, the noise generated by the technology can be below 40 dB (the level in a quiet room). Modern pumps and good insulation can make pool operations very quiet.

Upon handover of the completed pool, the investor will receive full documentation, including:

-As-built project documentation: Pool drawings (floor plan and sections), equipment diagrams (filtration, wiring and electrical panel) and, if applicable, construction drawings modified according to the actual implementation. These documents are intended for archiving purposes and for future maintenance.

-Operational documentation: A pool operation manual describing how to maintain the water and operate the equipment, as well as procedures for draining and winterising. It also includes a maintenance schedule with recommended service intervals. The manual contains safety instructions and emergency procedures, such as what to do in the event of a chlorine leak.

-Test reports: We provide pressure test reports for piping and pool watertightness tests (filling), as well as electrical inspection reports for the control panel and lighting, if applicable, for final inspection or audit purposes. These reports confirm that the system has been tested and is functional and safe.

-Certificates and attestations: We provide certificates for all materials, including certification for stainless steel (grade 1.4404), a declaration of conformity for pool lights (compliant with the SELV standard) and a certificate for filters (in accordance with the Pressure Equipment Directive – PED). We also provide certificates for the chemical dosing system. We also provide documentation confirming that the pool complies with hygiene regulations, e.g. confirmation that approved materials have been used for contact with water and that the requirements of Decree No. 238/2011 Coll. have been met. If an inspector (TÜV or hygiene inspector) was involved in the process, their reports will be attached.

Warranty Certificates and Contacts: Documentation and handover

IMAGINOX provides clients with a warranty certificate, service contracts and an inspection schedule. All documentation is provided in both print and PDF formats, and a walkthrough is given at handover. This package meets the requirements for final building or health authority inspections. Documentation can also be provided in English or German upon request.

Saltwater is compatible with stainless steel pools, but the appropriate steel grade depends on the salinity level. For low salinity levels (up to ~0.5%, which is typical of salt chlorinators), standard 316L stainless steel is sufficient, provided that the pH level is properly monitored. However, for high salinity or seawater (typically ~3.5%), a more resistant alloy is required, such as 316Ti, 904L or duplex steel, which comes at a higher cost. In all cases, proper grounding is essential, as the conductivity of saltwater increases the risk of galvanic corrosion. Maintenance is similar to that for regular pool water, though more frequent checks for signs of corrosion are recommended.

Our pools are highly energy- and water-efficient because we prioritise economical operation from the design stage.

-Water savings: Stainless steel pools are designed to minimise water loss. Overflow pools have optimally sized balancing tanks, so there is no unnecessary overflow of water into the drain. The water level can be kept just below the rim, which looks aesthetically pleasing and prevents splashing, and for skimmers it should be kept about 10 cm below the edge. The smooth surface and high-quality filtration system ensure the water stays clean for longer, meaning it doesn’t need to be drained and replaced as often. With proper maintenance, for example, only the water that evaporates or is filtered out is lost — nothing more. We also use water-saving filtration systems — for instance, we position jets at the bottom to circulate the entire volume of water, eliminating the need for additional circulation. When backwashing filters, we optimise cycles to avoid wasting water. Some commercial installations have also been equipped with a system for reusing purified rinse water for watering purposes, which reduces overall consumption.

-Energy savings (heating and operation): We can insulate stainless steel pools very effectively. Outdoor pools are insulated on both the walls and the base (typically 50–100 mm), which minimises heat loss to the ground. The stainless steel walls of indoor pools quickly take on the water’s temperature, so when the water is heated, the entire tank warms up and functions more like a heat accumulator than a heat sink. We use efficient heat pumps or heat exchangers with a high coefficient of performance (COP) to heat the water. We also recommend integrating with other systems — for instance, a heat exchanger can utilise excess heat from a hotel’s air conditioning to heat the pool. A cover (slatted or thermal) should be used when the pool is not in use to reduce evaporation losses by up to 80%. Our slatted cover is fully automatic, so staff can easily operate it daily.

-Energy-saving technology: We install modern pumps with variable frequency drives that reduce power output when the pool is not in use. For example, the filtration system runs at lower speeds at night, saving electricity. We use LED lights for pool lighting, which consume negligible amounts of energy compared to old halogen bulbs. Furthermore, the pool can be equipped with solar collectors or panels, providing virtually free solar-powered heating. In combination with high-quality heat pumps, we can maintain the water temperature very efficiently. According to expert calculations, the annual operating costs of a stainless steel pool can be 10–15% lower than those of a comparable uninsulated liner pool (thanks to reduced heat loss and the need for less frequent water replacement).

Our goal is to make our pools as energy-efficient as possible. We prioritise sustainable operation, in line with modern green wellness trends.

We offer a variety of pool covers.

-Sliding roof – available in various sizes and designs.

-Automatic roller shade roofing (slat roofing)  – This is a very popular option with a minimalist design. It is suitable for both indoor and outdoor use, and you can equip it with additional safety features if you have small children or pets.

-Roofing with a retractable terrace (sliding terrace) – Ideal for smaller spaces. With this option, you can enjoy both a pool and a beautiful seating area in your garden.

-Movable pool floors – A modern and timeless solution that allows you to extend your patio or relaxation area when you don’t feel like swimming. Its adjustable depth makes it ideal for swimming and for use as a wading pool for children.

10 years on the structural strength and watertightness of the stainless steel tub (frame and sheet metal)

1 year on built-in parts and accessories not manufactured by Imaginox,

6 months on consumables (components subject to normal wear and tear, e.g., light bulbs, gaskets, etc.)

In addition to the statutory warranty, we also provide a post-warranty service and support package. Customers will receive a detailed manual for operating and maintaining their pool, and our service team is available to assist with any issues.

Even with intensive use, the lifespan of a stainless steel pool structure remains exceptionally long. The pool shell itself lasts for decades (50+ years), even with daily use by hundreds of visitors. The stainless steel surface is so durable that heavy loads, such as the mechanical stress caused by a large number of swimmers, do not result in significant wear.

However, certain components and surface effects may change under heavy use: after 10–15 years of continuous operation, for example, a very shiny surface may become slightly dull due to cleaning and use, but this does not affect its function. Technological components (e.g. pumps, filters and ozonation systems) typically have a lifespan of 8–15 years and are then replaced — however, this applies to all pools, not just stainless steel ones.

Therefore, in practice, a well-maintained stainless steel hotel pool will last practically indefinitely. After 10–20 years, the hotel may only need to carry out cosmetic renovations, such as surface polishing and technology upgrades, and the pool will continue to serve its purpose. Compared to a liner pool, where the liner would need replacing one or two times during that period, or a tiled pool, where the grout joints would need attention, a stainless steel pool is significantly more durable. If the operator follows the recommended maintenance schedule (regular annual inspections and chemical maintenance), the intensity of use will have no significant impact on the lifespan.0

At least when operated correctly. Scheduled shutdowns in hotel operations are usually performed one or two times a year for necessary maintenance, typically in spring and autumn, outside of peak season. During a shutdown, which lasts a few days, more thorough tasks are performed, such as a complete clean of the pool, an inspection of the equipment and replacement of any worn parts, such as seals, light bulbs and filter media, if necessary. These shutdowns are voluntary preventive measures, planned in advance, to keep the pool in perfect condition.

Unplanned shutdowns due to malfunctions are rare with stainless steel pools. The pool shell itself is virtually maintenance-free. However, it is possible that a pump or other technical component may fail. Fortunately, this can often be resolved by replacing the component within a day without having to close the pool for long (for example, we have backup pumps that can be installed promptly). In the event of mechanical damage to the stainless steel basin (which is extremely rare, perhaps due to vandalism or a heavy object falling on it), a local repair can be performed by welding, which also only involves a brief interruption to operations.

Hotels typically schedule an annual technical shutdown of the wellness area (e.g. one week per year), during which time all necessary inspections are performed. A stainless steel pool requires nothing beyond this standard practice. Since there is no need to replace tiles or liners, long shutdowns for renovations are unnecessary. Many stainless steel pools operate continuously for many years and are only shut down for hours or days for filtration maintenance. From the operator’s perspective, this is therefore very advantageous, as operational downtime (and loss of revenue) is minimal.

To maintain a stainless steel pool, it is necessary to clean it regularly, adhere to specific guidelines and ensure the correct concentrations of pool chemicals or salt are used.

It is crucial to maintain stable water chemistry, primarily in terms of pH, disinfectant concentration (chlorine) and alkalinity. Stainless steel is less tolerant of large deviations: a pH level that is too low or a high chlorine content can eventually damage the passive layer of the steel. To avoid this, it is recommended that you use automatic dispensers or test the water regularly to ensure that the values remain within optimal limits. This allows the technology and dispensers to comfortably take care of your pool. Under no circumstances should you use chemicals containing copper (e.g. copper sulphate), as these would damage the steel. If you want a saltwater pool, you need to choose the right type of stainless steel.

Thanks to its robustness and corrosion resistance, a stainless steel pool has an extremely long lifespan. In fact, it is often said to be nearly unlimited, as it can last for more than 50 years. This is because the material is resistant to rust, UV radiation and chemicals, and shows only minimal wear.

Unlike other materials, stainless steel does not age — it does not chip, crumble or fade from UV exposure, nor is it prone to microcracks. However, proper maintenance is essential for a long lifespan: if the recommended procedures (water care and cleaning) are followed, the pool can be used for practically an unlimited time. Many stainless steel pools installed decades ago are still fully functional today. While the pool’s operating systems (pumps, filters and heating) may require replacement after 10–20 years, the stainless steel pool shell itself will last for generations.