Fibre Cement Slate
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Types and Durability
| Description
Fibre Cement Slates |
Expected Lifespan
(Years) |
Adjustment Factors |
| Fibre reinforced cement based slates*. Complying with requirements of ASTM C 1530-02 or BS 4624. | 75-100 | 1st stage adjustment factor:
In industrial areas (heavy polluted): -15% years In urban areas: -10% years In suburban areas: -0% years 2nd stage adjustment factor: Within 20m from express way: -20% years Within 20m from major arterial road: -10% years Within 20m from light traffic road: – 5% years Test certificate from approved local testing authority : +15% years |
| 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. | 25 | |
| Non-Asbestos cement slate complying with requirements of ASTM C 1530-02 or BS EN 492. | 40-75 | |
| 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. | < 10 | None |
*Manufactured using Portland cement, pigments and other constituent.
Combination of adjustment factor (1st stage and 2nd stage) should be added to obtain the durability values. Refer to durability calculator