Materials:Permaply 28

Notice to the Reader: The roofing assembly / material information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

Manufacturer: Johns Manville Corporation Accepted for RoofStar Guarantee Program 1995 Product Summary Intended as the first or bases sheet in Built-up Roofing or modified bitumen roof assemblies.

Click below for the Technical Data Sheet