- Membrane typeBituminous
The two-ply Firestone Self-Adhered (SA) Base System combines Firestone MB Base SA with either an APP or SBS cap sheet torch-applied directly over the base sheet. The system's specification flexibility allows specifiers to select the cap sheet best suited to job conditions and local installation practices.
During torch application of the cap sheet, the fiberglass-reinforced base sheet serves as an effective work platform and thermal barrier for torch application. The base sheet also achieves complete fusion, assuring that the BASEGARD™ SA System works as a redundant monolithic waterproofing layer beneath the cap sheet.