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Bradfords£38.20Visit shop Bostik Cementone Waterproof Bituproof Roofing Emulsion 5Ltr - Black
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The Bostik Cementone Waterproof Bituproof Roofing Emulsion is designed for homeowners and professionals seeking durable, solvent-free waterproofing for a variety of roofing materials. Its key benefit is providing robust protection against moisture penetration on surfaces like fibre cement, roofing felt, and metal. A potential caveat is its dark brown color which dries to black, so consider this for visible applications.
| Colour | Black |
|---|---|
| Model Part Number | 30811685 |
| Brand | Bostik |
While it dries to a black finish, it is not typically designed as a primer for decorative paints. It's a functional waterproofing and protective coating.
Yes, it is suitable for use on roofing felt which is commonly found on shed roofs. Ensure the felt is in reasonable condition before application.
Drying time varies depending on temperature and humidity. It is typically touch-dry within 2-6 hours and fully cured within 24 hours.
It is best applied in temperatures between 5°C and 30°C. Avoid applying during frost, rain, or extreme heat.
Clean tools and equipment immediately after use with water. Spills should be wiped up while still wet.
Coverage is approximately 1-1.5 square meters per liter per coat, depending on the surface porosity and texture.
Stir thoroughly. If very cold, allow to warm up to room temperature. Do not add water unless specified for a particular application, and then only in very small amounts.
Surface may not have been adequately prepared. Ensure it was clean and free from dust, grease, or loose material. For porous surfaces, a primer might be necessary.
This can occur in very humid conditions or if applied too thickly. Ensure adequate ventilation and allow more time for drying. Avoid applying in very cold or damp weather.
Preparation: Ensure surfaces are clean, dry (though application on damp surfaces is possible), and free from loose debris, moss, or loose paint. For dusty or porous surfaces, a suitable primer may be recommended.
Application: Apply using a medium-hard brush. A single coat is typically sufficient for general waterproofing, but two coats may be applied for increased durability, allowing the first coat to become touch-dry before applying the second. Ensure full coverage, paying attention to edges and joints.
Compatibility: Compatible with fibre/cement, roofing felt, mastic asphalt, corrugated iron, slates, tiles, lead, copper, and zinc.
Care: Store in a cool, dry place away from direct sunlight and frost. Keep the container tightly sealed. Clean tools and equipment immediately after use with water.
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