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Sikasil® Pool is a 1-part, neutral curing silicone sealant designed specifically for the demanding environment of swimming pools and permanently wet areas. Its formulation provides a reliable, flexible, and non-corrosive seal for joints between tiles, concrete, glass, and metals. Engineered for both interior and exterior use, it delivers a high-performance solution for areas constantly exposed to water and chemicals, ensuring long-term durability and water tightness.
Potential Outcome: Poor or non-existent adhesion, leading to bond failure, delamination, and inevitable leaks. This is the number one cause of sealant failure.
Adheseal Best Practice: Substrates must be perfectly clean, sound, and bone dry. Always ensure the substrate temperature is at least +3°C above the dew point to prevent condensation.
Potential Outcome: Excessive stress on the sealant, causing it to tear or pull away from the joint walls, especially during thermal movement.
Adheseal Best Practice: Always use a closed-cell polyethylene foam backing rod. Ensure the joint width is between 10mm and 35mm and the depth is between 6mm and 10mm. A 2:1 width-to-depth ratio is ideal.
Potential Outcome: The sealant hasn't fully cured. This compromises its chemical resistance and adhesion, leading to premature failure.
Adheseal Best Practice: You must allow the sealant to cure completely for a minimum of 7 days before filling the pool with water.
Sealing tile movement joints that will be permanently underwater and exposed to chlorine. You need a 100% reliable seal that won't degrade, grow mould, or fail.
Use Sikasil® Pool following correct joint design (10-35mm wide) with a backing rod. For concrete or unglazed tiles, prime the clean, dry joint walls with Sika® Primer-3 N. For glazed tiles, prep with Sika® Aktivator-205. Tool the sealant firmly for full contact.
Ensure water pH (6.5-7.6) and free chlorine (< 5 mg/L) are maintained after curing. Advise the client this is critical for sealant longevity. Wait the full 7-day cure time before filling.
Replacing failed sealant in an existing pool. The old sealant is covered in black fungus, peeling, and leaking, risking client trust and requiring a permanent fix.
All old sealant must be mechanically removed. Clean the joint surfaces using a wire brush or grinder, then remove all dust. Prep the sound, dry substrate with the appropriate primer (e.g., Sika® Primer-3 N for concrete). Apply Sikasil® Pool and tool to a smooth finish.
Do not use acid-based detergents for cleaning. If reconstructing joints due to fungal growth, the old Sikasil® Pool must be completely removed first to ensure a clean bonding surface.
Sealing metal fixtures (ladders, drains) or glass pool fencing penetrations against concrete or tiles. The seal must be non-corrosive, flexible, and watertight.
Sikasil® Pool is a neutral cure, non-corrosive sealant. For stainless steel or anodised aluminium, lightly roughen, clean, and prep with Sika® Aktivator-205. For copper or brass, use Sika® Aktivator-205 followed by Sika® Primer-3 N. For PVC, use Sika® Primer-215.
For standard glass, simply clean thoroughly with Isopropanol before application. Always test adhesion on a small, non-visible area before full project application.
You must wait a minimum of 7 days for Sikasil® Pool to cure completely before filling the pool. This ensures the sealant reaches its full strength and chemical resistance, which is critical for long-term performance in permanent water immersion. Curing time can be longer in cold or dry conditions.
Yes, it has good resistance to chlorinated water and common swimming pool cleaning chemicals. However, this resistance is dependent on balanced water chemistry. For maximum sealant life, you must ensure the pool water maintains a pH value between 6.5 and 7.6 and a free chlorine level below 5 mg/L.
Yes, for critical applications like swimming pools, a primer is highly recommended to ensure optimum adhesion and joint durability. The correct primer varies by substrate: use Sika® Primer-3 N for concrete and unglazed tiles, Sika® Aktivator-205 for glazed tiles and most metals, and Sika® Primer-215 for PVC.
No, this product cannot be overpainted. It is a silicone-based sealant, and paint will not adhere to its cured surface. It is available in White, Grey, and Transparent to match your required finish.
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Sealing movement joints in concrete or tiled swimming pools. | High elasticity (±25%) and strong bond prevent leaks from thermal expansion/contraction. | Pool Builders, Tilers |
| Sealing joints in permanently wet areas (e.g., showers, change rooms, laundries). | Very good fungal resistance prevents the growth of unsightly and unhygienic mould. | Plumbers, Tilers, Builders |
| Sealing around metal fixtures (drains, ladders) and glass fencing. | Neutral cure formula is non-corrosive and safe for metals, glass, and concrete. | Plumbers, Glaziers, Builders |
| Interior and exterior sealing for areas under permanent water immersion. | Engineered to withstand permanent water immersion and chemical exposure for long-term durability. | Remedial Contractors, Builders |
Surface preparation is the most critical step. All substrates must be sound, clean, dry, and free of contaminants like dirt, oil, grease, cement laitance, or old sealant residues.
Use wire brushing, grinding, or grit blasting to remove all weak substrate material. Repair any damaged joint edges.
Remove all dust, loose, and friable material from all surfaces with a brush and/or vacuum before applying any primer or sealant.
Apply the correct primer as specified in the Adhesion Guide to ensure durable, long-term adhesion. Avoid excessive application.
Apply the specified primer (e.g., Sika® Primer-3 N, Sika® Aktivator-205, Sika® Primer-215) to the joint surfaces using a clean cloth or brush. Follow the flash-off times for that specific primer.
Insert a closed-cell polyethylene foam backing rod to the required depth (6mm - 10mm). If required, apply masking tape for neat joint lines. Fit the cartridge nozzle and cut it to the desired bead size.
Apply the sealant into the joint, ensuring it comes into full contact with the adhesion areas. Work to avoid air entrapment.
As soon as possible after application (within the ~5 min skin time), tool the sealant firmly against the joint sides. This ensures adequate adhesion and a smooth, professional finish.
Use a compatible tooling agent, such as Sika® Tooling Agent N, to smooth the joint surface. Do not use any tooling products that contain solvents.
The sealant must be completely cured before the pool is filled. The cure rate is approximately 2.0 mm per 24 hours.
Wear chemical-resistant, impervious gloves (e.g., butyl or nitrile rubber) and safety glasses complying with AS/NZS 1337.1.
Follow standard industrial hygiene measures. Do not eat, drink, or smoke when using. Wash hands after use and before breaks. Do not get in eyes, on skin, or on clothing.
Store in original, unopened, and undamaged sealed packaging in dry conditions at temperatures between +5°C and +25°C.
Treat symptomatically. Refer to the full Safety Data Sheet (SDS) for detailed information.
Substrate must be sound, clean, dry, and free of all contaminants (dirt, oil, laitance, old sealant). Use wire brushing or grinding to remove all weak material. Remove all dust.
Apply Sika® Primer-3 N with a brush. Wait until the flash-off time is over before applying sealant.
Lightly roughen the surface with a fine abrasive pad. Clean the surface thoroughly and ensure it is dry.
Pretreat the surface with Sika® Aktivator-205 applied with a clean cloth.
Lightly roughen the surface with a fine abrasive pad. Clean the surface thoroughly and ensure it is dry.
First, pretreat with Sika® Aktivator-205. After flash-off, apply Sika® Primer-3 N with a brush.
For Glass: Clean thoroughly with Isopropanol before application. No primer needed.
For Glazed Tiles: Lightly roughen with a fine abrasive pad and clean.
On Glazed Tiles, pretreat with Sika® Aktivator-205 applied with a clean cloth.
Ensure the PVC surface is perfectly clean, dry, and free of any grease or oils.
Apply Sika® Primer-215 with a brush. Wait until the flash-off time is over before applying sealant.
Here are some common examples on where Sikasil Pool used by our customers.
| Property | Value |
|---|---|
| Chemical Composition | Neutral cure silicone |
| Curing System | ~2.0 mm/24 h (23°C/50% r.h.) |
| Colour | White, Grey, Transparent |
| Density | ~1.05 kg/l |
| Tensile Strength | ~0.30 N/mm2 at 100 % elongation (23°C) |
| Movement Capability | ±25% |
| Shore Hardness | ~20 (after 28 days) |
| Impact Strength | ~4.0 N/mm |
| Deformability | >90% |
| Skin Time | ~5 min (23°C/50% r.h.) |
| Service Temperature | −40°C to +80°C |
| Packaging | 300 ml cartridges, 600 ml foil packs |
| Shelf Life | 12 months from date of production |
| Storage Conditions | +5°C to +25°C, Dry conditions, Protected from direct sunlight |
