How to seal joints in swimming pool area | Innovations

To keep the pool area safe and low maintenance for years, besides proper construction and installation, it is equally important to pay attention to sealing swimming pool joints with the right kind of sealant. Having a pool always adds an element of leisure and fun but the pool areas are often subjected to aggressive wear and tear. The joints here need to withstand internal and external fluctuating temperatures, weather changes, moisture, condensation, and humidity. If water was to seep behind the joints, or worse, freeze, it could end up damaging tiles and turning into a costly repair job. Ideally the joints in swimming pools should be sealed with 100 % silicone products, that cure well under humidity and form a permanent elastic seal, with low shrinkage and no bubbles. When it comes to sealing swimming pool joints below the water line, we strongly advise you to contact our experts for the best product recommendations.

Preparation for Sealant application

Before you start sealing swimming pool joints, do the following checks to ensure lasting results.

Check the substrates before purchasing sealants. If you’re working with porous material like natural stone, then choose dedicated non staining products to avoid discoloration.
For shiny, flat surfaces a pure non-shrinking silicone sealant will give better aesthetic finish.
Before applying sealant, ensure that the sides of the joint surface are clean, dry, and free from contamination. To assure a perfect unsoiled substrate use Bostik T100 UNIVERSAL CLEANER to decontaminate.
For deep gaps in joints, a backer rod or foam should be used, before applying the sealant.

Everything you need to know before sealing pool joints

Which sealant should you choose for the swimming pool area?

I need to seal a swimming pool joint above the water line within ceramic tiles

With joints within ceramic tiles, it is important to use a product that would offer good adhesion with ceramics as well as be able to resist humidity and water. Sealants that contain 100% silicones with no dilutions will offer the best finish. They will form an elastic rubber seal when applied. You need a versatile sealant that cures under humidity and is mold free.

S765 Premium N

Perfect adhesion to most common substrates and excellent resistance to UV, water and weather.

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Bostik sealing glazing joints Bostik S765 Premium N

I need to seal a swimming pool joint above the water line within natural stone tiles

Natural stone tends to be porous and therefore is at a risk of getting stained or soiled at the edges. You need a non-staining silicone sealant.

S960 Silicone Non- Staining

Non staining, neutral curing, plasticizer free silicone sealant.

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Bostik Sealing glazing joints S960 Silicone Non- Staining

I need to seal a swimming pool joint above the water line within PMMA

Within PMMA (Polymethylmethacrylate) it is advisable to use a low modulus
silicone sealant. Ideally, one that is suitable for glazing applications and once cured, can withstand temperature fluctuations. You need a sealant that is suitable for PMMA and PC, which does not crack due to environmental stress.

S780 Glass ‘N’ seal premium

A matt finish, durable and neutral curing silicone for all kind of glazing applications.

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Bostik Sealing Pool Joints S780 Glass ‘N’ seal premium

I need to seal a swimming pool joint above the water line with stainless steel

When it comes to stainless steel in swimming pool areas, it is advisable to use a neutral silicone product that offers excellent adhesion. It also needs to be highly mold resistant. You need a versatile silicone sealant that is non-corrosive to metals.

S765 Premium N

Perfect adhesion to most common substrates and excellent resistance to UV, water, and weather.

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I need to seal a swimming pool joint below the water line

When sealing swimming pool joints below the water line, we strongly advise you to contact our experts to get the best product recommendations for your specific needs.

Contact our experts