Vented Roof Base Sheet

Firestone channel venting base is an oxidized asphalt coated fiberglass base sheet with granules on the underside of the membrane.

Vented roof base sheet.

Firestone channel venting base is an oxidized asphalt coated fiberglass base sheet with granules on the underside of the membrane. There is a slight grid pattern embossed into the granules to further aid in venting latent moisture in the existing roof system or deck. Polyflex sa base is constructed with a black mineral surfaced app weathering compound uniquely formulated to provide for exceptional bonding to heat welded interply or cap sheets. Promotes moisture vapor venting.

For example a lightweight concrete or nailable deck may need a venting base sheet. Gafglas stratavent perforated venting base sheet is a premium grade roofing felt with a patented perforated design that allows mopping asphalt to flow through to the substrate as the next ply of the roof system is installed. 3 28 ft 1 00 m x 102 3 ft 31 2 m 3 sq 27 9 m 2 30 lb sq 1 4 kg m 2 parabase plus p. Polyflex sa base is specifically designed to be used as a base sheet for heat welded roofing assemblies.

A lightly modified asphalt coated fiberglass base sheet or base ply. Also the application will be. Gafglas stratavent nailable venting base sheet is a premium grade roofing felt constructed around a strong glass fiber mat and high quality asphalt. 1 embossed waffle pattern grid channels.

A roofing base sheet is the bottom waterproofing layer on a multilayer roofing membrane system. 1 embossed waffle pattern grid channels. Polyflex sa base is a premium self adhered base ply roofing membrane. Ventsulation felt may be used as a base sheet for any built up roofing or modified bitumen roofing system to be installed over a substrate that potentially contains moisture.

The bottom of the sheet is granule surfaced to provide positive venting of any trapped gases under the roof membrane. A lightly modified asphalt coated fiberglass base sheet or base ply. It is made of fiberglass or reinforced polyester or composite reinforcement and is saturated coated with modified bitumen asphalt. Ventsulation felt may be used as a base sheet for any built up roofing or modified bitumen roofing system to be installed over a substrate that potentially contains moisture.

Helps prevent blistering of asphalt based roofs. Helps prevent blistering of asphalt based roofs when installed over potential moisture. Designed for use under siplast systems in certain nailable applications.