Pelleted/Granule Mineral Wool
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Types and Durability
| Description
Mineral wool slabs/ batts |
Expected Lifespan
(Years) |
Adjustment Factors |
| Glass fibre to ASTM C726-00a | 35 | Test certificate from approved local testing authority : +5 years |
| Rock fibre to ASTM C726-00a | 35 | |
| Mineral wool slabs/ batts not to ASTM C726-00a and/ or not designed for proposed use | < 10 | None |
Note: Installation to BS 5803 Part 3. For more details, refer to Roof Insulation Requirement