Roofing Felt Base Sheet

4 square standard 15 astm d 4869 type i covers 432 sq ft.

Roofing felt base sheet.

The sealed sheet also serves as an effective flame retarder for the application of torch applied modified bitumen membranes. All gmc products meet various astm standards. The hot mopped system is a traditional method of applying bituminous base sheets. Tri ply 75 base sheet is a premium roofing base sheet constructed with a fiberglass mat reinforcing that is coated on both sides to ensure a closed sheet design to prevent asphalt bleed through.

Installation methods for roofing base sheets hot mopping. 43 gap organic base sheet posted january 21 2014 by dmoore2948 filed under. Base and felt sheets offer heat resistance and low temperature flexibility to create a stronger more secure roof assembly. Garland s high performance roof membranes are the first line of defense against mother nature offering unparalleled strength durability and functionality.

They will not rot curl or shrink and are dimensionally stable for improved membrane performance. Gap 43 organic base sheet d astm 2626 04 is manufactured from superior quality felt that is saturated with asphalt and then coated on both sides with weathering grade coating asphalt and then covered on top with mineral surface fines to prevent sticking in the roll. Gmc roofing felt is an industry leading superior quality authentic asphalt saturated organic felt underlayment. The resulting system is.