Products / Westlake Royal Citadel Pro
Westlake Royal Citadel Pro
A self-adhering SBS asphalt sheet with a poly film facer, for use as a mid-ply underlayment in sloped roof assemblies. Miami-Dade NOA 25-0407.04 accepts it under ASTM D1970 in 36 in x 72 ft rolls.
Manufacturer
Material
Product line
Westlake Royal Roof Underlayments
Standards met
ASTM D1970
Status
active
Sources
- miamidade.gov verified 2026-10-15