Phenolic Foam
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Types and Durability
| Description
Phenolic foam |
Expected Lifespan
(Years) |
Adjustment Factors |
| Rigid phenolic foam boards faced or unfaced to ASTM C1126: 2000 or with foils/ glass facing to BS 3927. Designed for proposed use | 35 | Test certificate from approved local testing authority : +15% of no. of years
In inverted roof system or in protected membrane system: -15% of no. of years |
| Rigid phenolic foam board not to ASTM C1126: 2000 or BS 3927 | < 10 | None |
Note: Some insulants are not compatible with bituminous materials due to migration of plasticiser. Separating membranes are necessary to be used to avoid this problem [12]