Bostik Cementone Flexacryl Instant Waterproof Acrylic Roof Coating - Grey - 5kg

Yes, it is compatible with asphalt and bituminous roof coatings, providing a new waterproof layer.

In most cases, the advanced formula allows application on wet or dry surfaces without a primer. However, for certain porous or difficult surfaces, a primer might still be recommended for optimal adhesion.

The drying time can vary depending on temperature, humidity, and surface conditions. It is rain-resistant once dry to touch, but full curing takes longer. Refer to product packaging for specific drying times.

While designed for roofs, its flexibility and adhesion make it suitable for vertical repairs on compatible substrates, provided it is applied according to instructions.

Coverage varies based on the substrate's porosity and the application thickness. A general guideline for one coat is approximately 1-2 square meters per liter, so the 5kg tub should cover a significant area. Always consult the product data sheet for precise coverage.

This product is designed as a final waterproofing layer and is not typically intended for painting over. Check product specifications for compatibility with other finishes.

Store in a cool, dry place in its original, tightly sealed container. Protect from frost and direct sunlight.

Ensure the surface was clean and free from dust, grease, or loose material. For very porous or contaminated surfaces, a primer may be necessary. Check application temperature and conditions.

This is normal; the product is designed to be applied to wet surfaces, but it needs time to cure fully. Ensure proper ventilation to aid drying. Avoid heavy rain immediately after application if possible.

Ensure the product was stirred thoroughly before application. Apply in consistent, even strokes. If a second coat is necessary for coverage, wait for the first coat to be touch-dry according to manufacturer guidelines.

Ensure the product has been stored correctly and is not old. If applied in very cold temperatures, it may thicken; try to apply in warmer conditions if possible. Stir vigorously.