{"id":"cmp-005","license":"CC-BY-4.0","data":{"title":"Class A assembly stack vs 'shingle in a bag' (what the rating attaches to)","file":"/diagrams/cmp-005-class-a-assembly-vs-covering-label.svg","caption":"FA Exhibit CMP-005. Class A assembly stack versus a covering label.","alt":"A labeled roof-covering sample is compared with an exploded roof assembly containing the covering, substrate or thermal barrier, insulation, vapor retarder, and roof deck. An accent bracket indicates that the installed configuration, not only one visible product, must match the tested or listed Class A path.","kind":"diagram","rights":"cc-by-4.0","depicts":"A Class A statement on a roof covering is not, by itself, the specification for the installed roof assembly","identifiableAddress":false,"exifGpsStripped":true,"derivation":"AFTER FEMA P-737 §4.1.2 · ASTM E108 PUBLIC SCOPE · PARENT: ROF-100.","technicalReviewer":"Grayson Graham","lastVerified":"2026-08-25T00:00:00.000Z","sourceUrl":"https://store.astm.org/e0108-20.html"}}