Commercial pool renovations

Commercial pool renovations

Commercial pool renovations

After the pandemic closures, commercial aquatics facilities might have been confronted with peeling, cracking or leaking pools. A feasible solution to these chronic problems is to line these pools with an on-site PVC membrane.

Not only is the weld-in-place liner very affordable, but also can it eliminate some underlying issues in the pool’s structure to make it completely watertight. A PVC membrane thoroughly seals the pool structure, and is thus the perfect solution for commercial pool renovations.

Commercial pool renovation

It’s also important to consider that on-site pool liners are suitable for both renovating existing pools and building new aquatics facilities. They can be used to line a new concrete wall or stainless-steel pool wall construction, or to line a cracked, peeling, or leaking gunite, plaster or fiberglass pool.

 

Why choose a PVC pool membrane for commercial pool renovations

  • Thanks to its protective lacquer, they are chlorine and UV resistant. Its outstanding performance shows also in conditions of chemical abuse.
  • Instead of dealing with long lead times for pre-manufactured products, weld-in-place pool membranes are readily available. Pool liner installers can overcome lead times by stocking the PVC membranes for upcoming jobs.
  • Weld-in-place pool liners provide a perfect fit for any pool shape. Since they are installed on-site, you can get an exact fit even for the most challenging shapes.
  • Because of the mesh reinforcement between the layers, they perform great longevity and tear-resistance.
  • The surface underneath the PVC membrane can continue to shift and crack but it won’t affect the membrane. This of course gives peace of mind to any aquatics facility manager.
  • Due to its low maintenance, aquatics facility managers will see their pool maintenance costs decrease in terms of money and time.
  • In both 60- and 80-mil thicknesses, they come in beautiful textures that will give pools not only watertightness, but also a completely renovated look in a trendy design.
  • Talking about design, these reinforced pool liners can be found in various textures and prints that resemble natural elements such as marble, stone and sand. Going beyond the plain white or blue, these options are popular among hotels, country clubs, homeowners associations and community pools because they provide a more high-end feel.
  • Forget the old anti-slip texture for steps and shallow water areas. Slip resistant does not mean old-fashioned knobbly texture anymore.

After having seen the various advantages an on-site pool liner bears within itself for commercial pool refurbishment, let’s have a look at how to install it.

Understanding PVC pool membrane installation

The installation process of a weld-in-place membrane is relatively straightforward. These are the steps to follow:

Preparing the surface

Before installing the pool liner, crews have to prepare the surface, which can include repairs. In terms of time, most pools require a day or even less for preparation.

Nonetheless, if a pool is in particularly bad shape, it might need three to four days for fixing the surface.

painted pool shell

Installing the felt linig

Once the surface is ready, a felt lining aka geotextile is installed on the pool shell.  Thanks to its anti-bacterial properties, it avoids bacteria proliferation behind the PVC membrane, thus extending the life of the product.

As a side benefit, the felt lining conveys a cushioned feeling to the surface making the floor more comfortable to stand on. This is specially important in wading pools and also when using the commercial pool for water conditioning, therapy or aerobics.

water aerobics

Installing the weld-in-place liner

After the geotextile is installed, 6-foot-wide strips of PVC pool membrane are rolled out and heat-welded together on site. Steps, beach entries, safety ledges and any other shallow water areas are cut, fitted and welded as well.

Slip-resistant, embossed surfaces have to be used on steps, shallow areas and beach entries. There is also black membrane to create racing lanes and depth markers.

Installing RENOLIT ALKORPLAN TOUCH Origin on a painted pool wall

How to weld reinforced pool liners

Because they are welded on site, this allows the greatest degree of customisation, and can help avoid supply-chain issues.

Depending on the part of the installation process, there are three different welding techniques.

Reinforced pool liners welding techniques

The two basic installation techniques are spot welding and traditional overlap welding. Contractors looking for a superior aesthetic finish also use the butt-welding technique along the pool floor to make the welds almost invisible.

Spot Welding

Spot welding takes place at the beginning of the installation to help position and secure the liner so that it does not move through the rest of the process.
Small, quick ‘pre-welds’ are made between the overlapping pieces at intervals of approx. 7 to 8 inches along the seam. During this process, the pieces must be perfectly aligned since the liner needs to be held in place.

Overlap Welding

For overlap welding the liner layers overlap by approximately 2 inches. This overlap will in the end turn into a 2-inch-wide seam.

Once the spot welds have been done, installers apply the welding gun down the full length of the seam. The welding nozzle is inserted under the overlap in order to heat both surfaces sufficiently to fuse the layers and form a lap. While the lap is still hot, pressure is applied with a silicone roller to ensure the two layers are fused together.

Robot welders are used to speed up the welding process for larger pools. Once the robot welder is set-up, it automatically welds the entire length of the pool.

RENOLIT ALKORPLAN TOUCH Origin

Butt Welding

The butt welding technique is compatible only with 80mil membranes. This is specially recommended for more visible areas such as the pool floor in order to hide the seam.

Instead of overlapping the membrane edges, they are butt up against each other.

This technique is not compulsory at all, though it achieves virtually invisible joints on the pool floor.

Being more time-consumig, it will add to installation costs. That’s why some installers stick with the traditional overlap weld since in the daytime, when the water is moving, the overlap joint is not apparent.

RENOLIT ALKORPLAN TOUCH Origin

As a result, the awareness of reinforced PVC pool membranes is definitely on the rise, specially among commercial aquatics facilities that need a renovation. After considering the different systems for commercial pool renovations, refurbishing them with an on-site pool liner becomes the long-lasting pool lining solution facility managers have been looking for.

Make yourself comfortable and have a look at our Prestigious Pools e-book. A collection of commercial pool projects around the world that have been lined with a RENOLIT ALKORPLAN weld-on-site pool liner.

This is a version of an article written by Matthew Sands (RENOLIT sales engineer) for the Aquatics International magazine.

Prestigious pools: commercial pool projects

Prestigious pools: commercial pool projects

Prestigious pools: commercial pool projects

We are over the moon to announce the official launching of our newest e-book: Prestigious Pools. A collection of commercial pool projects around the world.

First of all we want to thank all those facilities, pool builders and installers who have collaborated with this project. Without them it would not have been possible.

Worldwide every year, thousands of swimming pools are being designed for public and communal use. These are both new projects as well as renovations.

Unlike private pools, public pools demand greater reliability of their elements because of their intensive use. It requires the use of resistant and durable materials to give building companies and pool owners peace of mind.

country estate in Dorset

A bad choice of the lining can result in the temporary closure of the swimming pool, resulting in huge economic losses.

Hundreds of hotels, campsites, sports and entertainment facilities, waterparks, wellness centres and neighbour communities, increasingly opt for RENOLIT to line their pools; not only because of its good installation performance and use, but also because of its beauty.

Are you the happy owner of a hotel or a campsite whose crown jewel is a pool lined with RENOLIT ALKORPLAN on-site liner? We would be glad to include your facilities in our e-book!

Or maybe your facility does not have a pool yet? Do not forget that “activity holiday” has become a trendy way of holiday making in the past few years, and a hotel with a wellness area is a must, whether it is an indoor pool or an outdoor pool.

We are slowly leaving behind the Corona pandemic and we are all willing to travel again. According to the most important booking platforms “hotel with pool” is one of the most popular searches on internet. Make sure you don‘t miss that train.

Start planning your hotel pool right away so that your guests will be able to enjoy it next season. We can help you find a commercial pool expert in your area.

Rely on RENOLIT: hundreds of pools back us up. This catalogue is just a sample. Be also a part of our “Prestigious Pools” e-book. We are glad about every single commercial pool project. Contact us.

The same Elegance, a new texture

The same Elegance, a new texture

The same Elegance, a new texture

 

RENOLIT ALKORPLAN TOUCH Elegance has reinvented itself and is now two-in-one. And what’s more, its beauty, colour and grace remain the same. RENOLIT ALKORPLAN TOUCH Elegance is at last slip-resistant.

RENOLIT ALKORPLAN TOUCH, the leading lining system, with 3D texture inspired by nature and 2 mm thickness for greater durability and resistance has bound the circle. RENOLIT wants the whole TOUCH range not only to be beautiful and watertight, but also to be safe for swimmers.

Now all the designs of the TOUCH product range are slip-resistant. This way it will not be necessary to take a supplementary anti-slip reinforced membrane for the access and low-water areas, ramps or steps in order to avoid accidents or slips among bathers.

The required certification in public pools is “C category”. And it is also also recommended in private pools: in transit areas, ramps, zero-entries, low-water areas and steps. Now the whole TOUCH product range is provided with the slip-resistance “C” category certification.

Until now this was possible with all the TOUCH designs except for the Elegance, whose installation required a slip-resistant membrane apart from the main product. Finally this is not required anymore!

This upgrade does not alter either the colour or the tonality of the reinforced membrane. The gorgeous deep blue watercolour still looks the same.  Such a beautiful and characteristic colour that it has turned the RENOLIT ALKORPLAN TOUCH Elegance on-site liner into one of the flagship designs of the product range.

Country estate in Dorset

Country estate in Dorset

Country estate in Dorset

Blessed with superb beaches as well as gorgeous nature, Dorset is the perfect holiday destination.  

Silverlake is a country estate in Dorset of luxury holiday homes based around a beautiful lake with panoramic views. The ultimate retreat for families who want to take advantage of nature and wildlife within a safe gated community.

Surrounded by great outdoors, the residential community made up of sustainable second homes set among woodland and lakes has to offer plenty of opportunities for boating, fishing, cycling and running on private footpaths.

The crowning jewel of the whole complex is without a doubt the Hurricane Spa: a superbly designed relaxing area with outdoor pool, roof terrace, sauna, gym, library, tennis court and lounge. A residents-only family spa where expert therapists are on hand for beauty treatments. 

The outdoor heated infinity pool overlooking the serene waters of the lake is the icing on the cake for this sanctuary of tranquillity and calmness.

A modern 25 m swimming pool lined with RENOLIT ALKORPLAN TOUCH Elegance, a sleek reinforced membrane that emulates black slate and that perfectly matches the overall design, which evokes a mixture of Dorset beach house and Mediterranean beach club.

The pool builder from Dorchester, Cresta Leisure, was in charge of the pool project in collaboration with the on-site installer Aquaflex from Salisbury. Cresta Leisure won the bronze SPATA award 2020 in the Commercial Pool of the Year category for Silverlake’s country estate in Dorset.

The British Pool & Hot Tub Awards showcase the best examples of design, construction, installation and innovation in the UK. We congratulate both Cresta Leisure and Aquaflex on this well-deserved recognition. Best wishes for more successes in the future!

Looking for a pool builder who can help you design your commercial pool? Contact us and we will help you find one in your area. 

New design TOUCH Origin

New design TOUCH Origin

RENOLIT ALKORPLAN TOUCH, the range of reinforced pool membranes inspired in nature, the most resistant and long-lasting on the market thanks to their 2 mm thickness, officially presents the design that will set trends this summer: Origin.

Origin is the on site pool liner inspired in one of the most elegant and imperishable stones we can find on our beloved Planet Earth, in rivers, mountains, forests … granite.

Granite, a timeless and indestructible rock, which humanity has used on countless occasions to construct its most emblematic buildings and outstanding monuments, for its nobility and elegance.

Like the rest of the RENOLIT ALKORPLAN TOUCH range, Origin is a totally innovative and original design that has all the characteristics of quality, beauty, watertightness and resistance offered by the rest of the TOUCH range.

TOUCH Origin, with its visual appearance and spectacular touch, has a granitic texture that everyone knows, and thanks to its combination of black and grey spots on a white background it gives the water a brilliant metallic blue colour with sparkling grey highlights.

 

Characteristics and installation

In regard to its installation, we want to point out that Origin is an ideal design for membrane installers who have little or no experience, because thanks to its granite pattern any irregularities in the basin are attenuated and its joints are quite discreet.

RENOLIT ALKORPLAN TOUCH Origin has extraordinary flexibility to adapt to any shape of the basin, making installation quick and simple. It has a “C” grade slipperiness certificate, and like all RENOLIT ALKORPLAN pool liners it offers a written 10-year watertightness guarantee.

It is suitable for installing with overlap welds, like the rest of the TOUCH range, although for an impeccable finish, on the floor we recommend the butt welding technique because, in addition, Origin is perfect for concealing joints and dissimulating any imperfection in the pool.

Tile pool repair

Tile pool repair

Tile pool repair

This cracked and leaking pool located in Marbella needed an urgent repair. Poor construction and ground movement were to blame.

The pool had cracked across the width and from the middle towards one corner, what caused water leaks in the structure.  When the structure is leaking, regrouting or replacing the glass mosaic tiles will not help since they are not waterproof. 

Traditional tile pool repair based on using repair mortar or filling the cracks with silicone does not prove successful in the long term. You have to deal with the underlying problem because if the ground moves slightly again, the crack will reopen.

Once a pool starts cracking, there is no turning back: it needs to be repaired quickly to prevent more damage in the structure itself or even in the surrounding area. Not only will the steel in the structure become exposed and will start to corrode, but also will the water running under the pool structure soften the ground. Thus, the problem will further aggravate.

To sum up, even though mosaic tiled pools are an absolute eye-catcher, this pool lining option implies a series of disadvantages including dirty grout lines, loose or broken tiles, cut feel and difficult maintenance. RENOLIT ALKORPLAN CERAMICS, on the other hand, requires low-maintenance, is easy to clean and provides the beautiful finish of tiled pools.

Piscina Liner are pool specialists in Andalusia and Algarve with many years of experience in repairing cracked and leaking pools. Whenever they deal with a tile pool repair where the customer does not want to give up this aesthetic finish, they recommend RENOLIT ALKORPLAN CERAMICS.

“No more loose tiles, sharp edges, leaks and difficult maintenance.”

Piscina Liner

Applying a RENOLIT ALKORPLAN reinforced membrane over the existing pool shell creates a barrier for the water and is guaranteed to be waterproof. In this specific case, the landlords chose the distinguished light grey ALKORPLAN CERAMICS Selene in order to undergo the tile pool repair. Pools do not always have to be blue! All the beauty of a tiled pool with none of the downsides of a tiled pool.

Pool lined with ALKORPLAN TOUCH Prestige

Pool lined with ALKORPLAN TOUCH Prestige

Pool lined with ALKORPLAN TOUCH Prestige

Ever heard of the Slovene Riviera? The beautiful coastline of Slovenia is located on the Gulf of Trieste, by the Adriatic Sea. A charming location with charming households like this wonderful one embellished with a pool lined with ALKORPLAN TOUCH Prestige.

A private house located in the seaside resort and spa town of Portorose (Portorož), whose owners were having problems with the previous lining system, which had been installed back in 2005. The old 1.5 mm blue liner had been wrongly installed, what caused water leaks on many spots.

Spambient, a pool building company from Slovenia specialised in swimming pools and whirlpools was in charge of the complete pool repair on this occasion. Refurbishing a pool lined with reinforced membrane is very easy and it will not take more than a few days depending on the pool dimensions. That is exactly one of the many advantages of the on site lining: simple installation without additional building work.

Since the previous lining had also had problems of colour fading, this time the landlords opted for a pool lined with ALKORPLAN TOUCH Prestige: a 2 mm thick pool liner inspired by nature provided with great durability. A 3D relief which reproduces volcanic rock and perfectly matches with the red-coloured façade and the surrounding pool deck.

The 13.5 x 5.8 m overflow pool with a variable depth which ranges from 1.4 to 2.1 m, has four inbuilt underwater windows, an unusual but impressive pool design. It is also equiped with water attractions, a submerged pool roller cover and an inverter driven heat pump.

In a nutshell, a pool that stands out not only because of its wonderful setting with gorgeous seaview, but also because of the pool characteristics, that make it unique.

Do you also want to convert your garden into a place to relax and chill? Please contact us and we help you find a reliable pool builder in your area.

Pool lining for spas

Pool lining for spas

Pool lining for spas

Only pioneers dare to try new applications for already existing products. We are very thankful for the never-ending thirst for innovation of our customers.

Gleomar Piscinas, a swimming pool builder from Gran Canaria was commissioned to build the spa of the Hotel Bohemia Suites & Spa. In order to do so they tested for the first time RENOLIT ALKORPLAN TOUCH pool linings for spas not only on the basin but also on the adjacent walls and showers.

Many pool builders are sceptical about lining spas with on-site liners because of the high water temperatures. The pool builder form the Canary Islands was, in contrast, completeley convinced that RENOLIT ALKORPLAN TOUCH is a suitable pool lining for spas.

Both pool and whirlpool tub were lined with RENOLIT ALKORPLAN TOUCH Vanity whereas the walls were lined with TOUCH Elegance. The shower walls were also on-site lined. In order to guarantee the watertighness not only was the reinforced pool liner glued with dispersion adhesive  but also welded.

The outcome of this colour combination is impressive. 150 sqm of RENOLIT ALKORPLAN TOUCH Vanity and 24 sqm of ALKORPLAN TOUCH Elegance were needed in order to line the 50 cbm the spa takes up. 

Why should you choose ALKORPLAN TOUCH as your pool lining for spas?

2 mm thickness

Thanks to its 2 mm thickness, it is the most resistant on-site liner in the market and, thus, the perfect pool lining for spas.

10 years guarantee watertightness

RENOLIT ALKORPLAN on-site liners are not only a decorative element but also a long-lasting waterproofing lining system.

3D relief inspired by nature

Its original design makes each pool unique.

As many pool fittings as you want

Powerful massage jets and chairs surely provide relaxation, what in turn displays the versatility of reinforced membranes. You can install as many pool fittings as you want and wherever you want.  

Make yourself comfortable and look for a reliable pool builder who will help you repair your old spa or build a new one. If you are looking for a RENOLIT certified installer in your area, please contact us and we will help you find one.

The DPD testing

The DPD testing

Water treatment in pools. The DPD testing.

Dosing chlorine correctly is a key factor in water treatment in pools. Let’s have a look at the world’s most common method.

The DPD testing is one of the most common methods for measuring chlorine levels. The acronym DPD stands for N,N-diethyl-p-phenylenediamine. This method was first introduced by Dr. Palin, a German chemist, in 1957. It’s a simple procedure where we measure the colour depth of the reaction between the chlorine and the DPD reagent.

The use of chlorine in swimming pool disinfection is very usual and pool keepers need to control it very carefully in order to prevent infections while minimising eye irritation. How to make it possible? By keeping the combined chlorine residual as low as possible. No clue what I am talking about? Let’s take it step by step.

First of all, there are different types of chlorine present in pools. Swimming pool water generally contains three types of chlorine known as free chlorine, combined chlorine and total chlorine. You get the total chlorine by adding the free chlorine to the combined chlorine.

    • Free chlorine is the chlorine that is still available to disinfect your pool water.

    • Combined chlorine is the chlorine that has already been used to disinfect the water. It is thus combined with organic matter and responsible for the annoying smell of chlorine.

    • The total chlorine is the sum of the two.

Once the free chlorine has joined with microorganisms, its ability to disinfect decreases. Actually 25 parts of Combined Chlorine are needed to do the sanitising work of one part of Free Chlorine. The Total Chlorine level must be higher than the Free Chlorine level.

With the help of a DPD test kit in the form of tablets or drops, you can measure the pH, free chlorine and total chlorine levels by comparing the resulting pink colour with a colour scale.

Is the DPD method an effective way of controlling the water quality?

The DPD testing is indeed an effective method in order to measure the chlorine level in our pool. The only problem is that DPD not only reacts with chlorine but also with other oxidizing agents such as bromine, iodine or ozone. Its levels in private pools are though almost non-significant.

There are a few issues that you could come up with when reading the chlorine levels:

    • Unclear water can result in a darker colour

    • A dirty cuvette

    • A wrong calibration of the photometer

    • Expired test reagent

In order to avoid misleading measurements, it is important to get a large enough sample. We recommend to take at least 5 different samples, reject the highest and the lowest one and calculate the median of the 3 remaining values.

Follow these simple steps in order to keep your pool disinfection under control and enjoy your bathing season without eye irritation.

The new glue for expanded polystyrene specific for pools

The new glue for expanded polystyrene specific for pools

The new glue for expanded polystyrene specific for pools

Nowadays there are new pool building techniques, which are simpler and quicker and that do not require a construction work. The latest trend in pool construction are the pools made of expanded polystyrene or EPS.

The use of polystyrene blocks or EPS filled with reinforced concrete has become widespread in the construction industry because it lightens certain building structures. But it is particularly in the pool building sector that it offers the most benefits in terms of endurance and construction speed.

It is very often the chosen material in multi-storey buildings where weight plays a major role in the construction. Furthermore, because of its high isulation value, this material gives a complete termal isulation. Thus, it should be noted that building a swimming pool using expanded polystyrene blocks is not only a more affordable alternative but also more energy efficient thanks to low running costs.

Apart from this, it is worth mentioning that expanded polystyrene or EPS avoids the growth of bacteria and fungi making it an ideal material for pool construction. Moreover this material is used not only for leveling the pool, but also for building steps or seats.

Expanded polystyrene blocks are lighter, cleaner and quicker to install than traditional bricks forming any boundary and shape of your pool design. Afterwards, only the installation of a RENOLIT ALKORPLAN on-site liner will be necessary in order to waterproof the swimming pool, thus saving the construction time of your pool.

For all that, RENOLIT has launched on the market the new RENOLIT ALKORGLUE zero solvents for geotextile fleece, which is specifically designed for not damaging the expanded polystyrene blocks used in the pool construction industry.

Thanks to the fact that it is solvent-free, not only is it not aggressive to the polystyrene blocks used for building swimming pools but it is also ideal for fixing RENOLIT ALKORPLAN fungicide pool felt underlay before installing RENOLIT ALKORPLAN reinforced membrane, the ultimate on-site pool liner.

Since the drying time is more than half an hour, small mistakes, which may occur when placing the pool felt underlay, can be corrected immediately without damaging it.

The RENOLIT ALKORPLAN pool felt underlay is a blue non-woven fabric of 400 g polypropylene fibres, which have undergone a fungicide treatment in order to avoid the proliferation of fungi and algae. This felt is installed directly on the walls and the bottom of the pool before the on-site lining takes place, and among other purposes, it helps make the bathers steps more comfortable.

In case the chosen pattern is RENOLIT ALKORPLAN TOUCH and butt welding must be carried out on the floor, installing pool felt underlay is unavoidable. Even if one of its main purposes is to avoid stain formation thanks to its fungicide treatment, using RENOLIT ALKORPLAN geotextile has also an aesthetic purpose. The result is a completely smooth surface because the felt underlay levels any small irregularities of the ground out. It is thus the right partner for pool refurbishments and renovations.

The new RENOLIT ALKORGLUE Zero Solvents glue is non-flammable and can be applied either wet, semi-wet or as contact glue. It should be applied with a spatula, serrated depending on the surface. No mixing is necessary. Since it is slow-drying, by applying pressure with a roller any grooves or air pockets will be removed. Stains or traces of wet RENOLIT ALKORGLUE Zero Solvents can be easily removed with water.

Do not hesitate to contact us through our contact form if you have any questions.