Everbuild 450 Builders Silicone Sealant - White

The sealant skins over in approximately 15-30 minutes and fully cures within 24 hours depending on bead size and environmental conditions (temperature and humidity).

Everbuild 450 is designed to be a non-paintable sealant. For areas requiring overpainting, consider a neutral cure silicone sealant specifically formulated for paintability.

Neutral cure silicones have a mild odor and are safe for use on most materials, including sensitive ones like metals and uPVC. Acetoxy cure silicones have a strong vinegar-like odor and can corrode certain materials.

This sealant has a joint movement capability of ± 50% of the joint width, meaning it can stretch or compress by up to half of its original width without failing.

No, typically no primer is required as it adheres to virtually all porous and non-porous substrates.

While it forms a waterproof seal, it's not specifically formulated with anti-fungal properties. For bathrooms, an anti-fungal silicone sealant is generally recommended to prevent mold growth.

Avoid use on surfaces that may bleed plasticisers or on contact with bitumen, asphalt, or certain rubbers, as these can affect adhesion or cause discoloration.

Ensure you are using a high-quality sealant gun. The high viscosity of this product may require more force than standard silicones.

Verify the surface was properly cleaned, dried, and free from contaminants like dust, grease, or old sealant. Ensure no primer was required for that specific substrate.

Check environmental conditions. Ensure adequate ventilation and that the temperature is within the recommended application range (typically 5°C to 40°C). Curing can be slower in very cold or humid conditions.

Tool the sealant immediately after application. Use a damp tool or finger dipped in soapy water for a smoother finish. Practice on a scrap surface if needed.