Fibre Cement Slate
Maintenance and Cleaning
Types | Maintenance / Cleaning | Cleaning Frequency |
Fibre reinforced cement based slates*. Complying with requirements of ASTM C 1530-02 or BS 4624. | Inspection:
A visual inspection on a regular basis to determine if only damage to the roofing components. Look for cracked or missing tiles and shingles and other defects. Shingles that are curled, cracked or missing their protective coating of granules will need to be replaced, and that probably means replacing all of them. Cracked or split slate tiles can be replaced individually by a professional. A leaking flat roof may just need new flashing, or it could require a complete replacement. Replace damaged tile as required. Efflorescene and weathering of the surfaces is to be expected. Cleaning: Periodic cleaning by water jet pressure to remove stains and dirts However, water pressure jet may not safe for some type of shingles, as it can cause damage and causing asphalt granules to be removed. Alternatively, chemical solution with no chlorine can be used. |
Once a year |
Asbestos cement slate complying with requirements of ASTM C 1530-02 or BS EN 492. (previously BS 690 Part 4). Colour may be natural or achieved by using suitable pigments in the manufacture. | ||
Non-Asbestos cement slate complying with requirements of ASTM C 1530-02 or BS EN 492. | ||
Asbestos or fibre reinforced cement slates not complying with the requirements of BS EN 492 (previously BS 690 Part 4), or uncoated non-asbestos fibre reinforced slates. |