Glossary / Class A
Class A
The most severe roof-assembly class under ASTM E108 or UL 790. Oregon R327’s floor is Class B. IBHS Essential asks for Class A.
Related
- assembly
- roofing
- astm-e108-ul-790
- Oregon R327 versus California CWUIC
- How to read a Class A roof listing
Where this term is used
- A Class A rating is not a service-life clock
- Arizona WUI code status
- Building code upgrade coverage
- California AB 38 seller disclosure
- California FAIR Plan
- Chimney spark arrestors
- Clark County IWUIC over Nevada’s deleted Chapter 5
- Class A covering is not a bag of shingles