Perforated Roofing Felt

This article series discusses roofing felt specifically addressing the roofing code or roofing manufacturer s requirements for use of an underlayment such as roofing felt tarpaper or other underlayment products beneath asphalt shingles and other.

Perforated roofing felt.

Is roofing felt required. Organic dry felt is made from 100 post consumer recycled material. 15 perforated felt imperial asphalt saturated felt is composed of a resilient high strength cellulose fiber mat saturated with premium waterproofing bitumen. The product may be used as a hot mopped asphalt vapour retarder on certain substrates or as a membrane for multi ply bur systems.

Roofing underlayment roofing felt requirements. No 15 perforated felt is designed for use as an interply felt for hot asphalt applied organic built up roofing systems. It is commonly referred to as no. Felt details for various roof slopes amp.

An asphalt roofing felt made of a specially formulated organic sheet which has been fully saturated with waterproofing asphalt. 15 astm 4869 type i is an authentic 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product. 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. Bituminous waterproofing systems are designed to protect residential and commercial buildings bitumen asphalt or coal tar pitch is a mixed substance made up of organic liquids that are highly sticky viscous and waterproof.

15 perforated asphalt saturated felt imperial meets or exceeds astm d226 type i. C type 3 plain non perforated roofing felt used as an underlayment beneath asphalt shingles wood shakes and shingles tiles and other steep slope roof coverings. It is suitable for use in the construction of various types of membranes for both new construction and reroofing over a variety of. 1 3 the values given in si metric units are the standard.

No 15 perforated felt asphalt saturated perforated organic roofing felt product use. Used as a vapour retarder on certain substrates or as a membrane for multi ply built up roofing systems iko s no. These systems are sometimes used to construct roofs in the form of roofing felt or roll roofing products. Felt roofing underlayment is asphalt saturated and are manufactured with a high grade organic mat.

30 specification felt roof underlayment 30 specification felt astm d4869 type iv astm d226 type ii atlas provides a complete selection of roofing felts or roofing paper. It is commonly referred to as no.