What weight felt paper should be used?
Roofing felt paper, sometimes known as “tar” paper, is a shingle underlayment that is installed between the roof deck and roof shingle. Shingle underlayments provide temporary protection from the weather while the roof is under construction and also provide a secondary barrier against leaks should there be a failure in the shingle system. Groover Roofing & Siding applies an ice and water shield on all our shingled roofing projects. In addition, “Ice Guard” is standard for all eaves, valleys, skylight and chimney areas. When snow and ice melt, trapped water can infiltrate to damage the roof deck and interior. Ice Guard is installed under shingled roofing to prevent water damage from ice dams, however, it does not prevent ice from forming.
Roofing felt paper, sometimes known as “tar” paper, is an underlayment that is installed between the roof decking and roof shingle. Commonly used weights for residential housing are the 15# and 30# underlayments. In the past, 30# felt was often used in conjunction with the organic asphalt shingles then on the market. Today’s fiberglass composite shingles offer greater durability and a longer life expectancy in a thinner and lighter format. Many manufacturers today recommend using 15# felt with their 20 year and 25 year fiberglass composite shingles available in our region. While many consumer publications continue to recommend 30# felt for reroofing projects, we suggest the manufacturer’s rocommendations are followed to ensure full warranty protection.
