Definition of the term Glass-Base

Roll roofing product built on a fiberglass base sheet constructed with a heavyweight TAMKO fiberglass mat, coated with weathering-grade asphalt. Used as a base sheet in select TAMKO modified asphalt and fiberglass roofing systems and as an alternate for TAMKO Type 43 Coated Base Sheet in any TAMKO specification. Hot-asphalt applied or mechanically fastened.