Resin-based Slate
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Types and Durability
| Description
Resin based Slates |
Expected Lifespan
(Years) |
Adjustment Factors |
| Resin based manmade slates*. Water absorption to BS 2782 Part 4 or ASTM C 406-00 Grade S1. Acid immersion to BS 680 Part 2. Strength to BS 2782 Part 3 or ASTM C 406-00 Grade S1. Other test data also required | 75 | 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 |
| Resin based manmade slates with no evidence of performance characteristics for water absoprtions, acid immersion, strength, freeze/ thaw resistance and/ or wet/ dry cycling. | < 10 | None |
Combination of adjustment factor (1st stage and 2nd stage) should be added to obtain the durability values. Refer to durability calculator
*Manufactured by embedding and compacting slate dust with resin binder.
Assumption: Slates to be fixed in accordance with BS 5534 Part 1.
If aluminium or stainless steel or copper fixings are used, adjustment factors are provided for ferrous fixings:
- Unprotected/ unplated ferrous fixings: -30% years
- Galvanized or electroplated ferrous fixings: – 15% years