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For sealing tiled corners, joints between ceramic tiles and sanitary ware, and connections between kitchen benches and splashbacks, S100 Sanitary Silicone Sealant prevents mould growth while absorbing joint movement. This neutral-curing oxime silicone adheres to both porous and non-porous surfaces without corroding metal fixtures or attacking concrete.
S100 is formulated with added fungicide to inhibit mould and biological growth in hot, humid environments such as bathrooms, kitchens, and showers. Its oxime curing system releases a low-odour, non-corrosive byproduct, making it safe for use on glass, porcelain, aluminium, sanitary acrylics, and glazed or unglazed ceramic tiles. The cured silicone forms a permanently flexible, dustproof gasket that maintains a waterproof seal across substrates with different thermal exposure coefficients.
S100 is suitable for internal and external applications on the following substrates:
Do not use S100 Sanitary Silicone Sealant in the following situations:
For internal joints, maintain a minimum joint width and depth of 5mm. For external joints, maintain a minimum width of 10mm. Use a 2:1 width-to-depth ratio wherever possible. For joints deeper than 10mm, install a backing rod 25% larger than the joint width to control depth and prevent three-sided adhesion.
All substrates must be dry, structurally sound, and clean. Clean non-porous surfaces with the two-wipe process using Acetone or 100% White Spirits before application. Concrete must cure for a minimum of 28 days to prevent moisture-driven delamination and mould growth under the seal. If priming is required, use Adheseal 50A for non-porous surfaces or Everflex Supaprime for porous substrates.
Apply the sealant between 5°C and 40°C. Tool the joint with a moistened spatula within the 15 to 20-minute skin time. Clean wet tools and excess sealant with white spirit or turps; cured sealant must be removed by mechanical means.
No, Adheseal S100 is not suitable for aquariums or for applying sealant underwater, including swimming pools or ponds. While it is suitable for below-waterline applications once fully cured, it cannot be applied or cure effectively in a submerged state.
Aim for a 2:1 width-to-depth ratio where possible. Internal joints should have a minimum width and depth of 5mm. External joints require a minimum of 10mm width and depth. Always ensure the silicone bonds to only two surfaces to allow for movement.
Adheseal S100 is recommended for marble and granite after a stain testing program is completed. For other natural stones, a comprehensive stain test is always advised before full application to prevent discolouration or adverse reactions.
No, this silicone is not paintable. Attempts to paint over it will likely result in cracking or peeling of the paint layer due to the sealant's elastic properties and surface characteristics.
| Application | Key benefit | Primary trades |
|---|---|---|
| Movement joints in tiled wet areas (e.g., floor-to-wall) | Accommodates joint movement up to ±30%, preventing cracks and maintaining a waterproof seal, even in humid conditions. | Tilers, Bathroom Renovators, Builders |
| Connecting joints between sanitary ware, bench tops, cupboards, and tiled surfaces | Resists mould and mildew growth with anti-fungal properties, ensuring a clean, hygienic finish in kitchens and bathrooms. | Plumbers, Cabinet Makers, Tilers |
| Sealing materials with different thermal expansion rates | High permanent flexibility and UV stability prevents bond failure and discolouration where varied materials expand and contract. | Builders, Glaziers, Engineers |
| Internal and external sealing around glass partitions or windows | UV stable and colour fast, maintaining aesthetic integrity and weather resistance in exposed applications. | Glaziers, Shopfitters, Builders |
| Sealing around rimless sinks and fibreglass components | Neutral cure chemistry prevents corrosion of galvanised/zinc-coated steel and does not attack concrete, offering broad substrate compatibility. | Plumbers, Kitchen Installers, Boat Builders |
Warning: Causes serious eye irritation and may cause an allergic skin reaction.
Wear appropriate personal protective equipment as required, suitable for the nature of the work and identified hazards. This typically includes gloves and eye protection.
Natural ventilation should be adequate under normal use conditions. Ensure a well-ventilated area, especially in confined spaces, to allow for proper curing and to minimise vapour inhalation.
Store in a cool, dry, well-ventilated place between 10°C and 35°C, out of direct sunlight and away from foodstuffs. Keep containers tightly closed when not in use. Dispose of contents and container in accordance with local, regional, national, and international regulations.
Proper surface preparation ensures optimal adhesion and long-term performance, preventing common failures like delamination or mould growth.
Surface prep: Surfaces must be structurally sound, stable, dry, and clean. Remove dust, loose material, oils, grease, and curing compounds. Ensure the substrate is free from surface water and continuous dampness.
Primer: Adhesion testing is recommended. Primer 50A is recommended for non-porous substrates, and Everflex Supaprime for porous substrates where priming is necessary. Apply with a small brush and allow to dry until solvents evaporate.
Surface prep: Concrete must cure for at least 28 days before sealant application. This prevents mould growth, poor adhesion, and subsequent delamination caused by moisture or uncured elements.
Primer: Adhesion testing is recommended. Everflex Supaprime is recommended for porous concrete where priming is necessary. Apply with a small brush and allow to dry until solvents evaporate.
Surface prep: Use the two-wipe process: moisten a clean cloth with Acetone or 100% White Spirits, wipe the surface, then immediately wipe with a second clean cloth. Change cloths frequently to avoid re-depositing contaminants.
Primer: Adhesion testing is recommended. Primer 50A is recommended for these non-porous substrates where priming is necessary. Apply with a small brush and allow to dry until solvents evaporate.
| Property | Value |
|---|---|
| Product Type | Polysiloxanes |
| Curing System | Oxime |
| Density (specific gravity) | 1.03 g/cm3 (translucent) |
| Shore A Hardness | 20 |
| Elongation at Break (ISO 8339) | 300% |
| Application Temperature | +5°C to +35°C |
| Temperature Resistance | -50°C to 150°C |
| Movement Capability | ±30% |
| Elastic Recovery (ISO 7389) | >90% |
| VOC | 43 gm/L |
| Skin Time | Approx. 20 minutes |
| Cure Time | 2mm per day (at 25°C & 50% humidity) |
| Shelf Life | 18-24 months |
Here are some common examples on where Adheseal S100 Sanitary Silicone Sealant used by our customers.
