Asked by: Eugena Rosedaleasked in category: General Last Updated: 28th May, 2020
What is 30 minute building paper?
Similarly, you may ask, what is 60 minute building paper?
60-Minute, single ply building paper is a weather-resistant barrier designed to provide excellent secondary protection behind exterior cladding to prevent moisture penetration and condensation in exterior wall assemblies. This product is an asphalt-saturated; craft grade D, breather-type sheathing building paper.
Subsequently, question is, what is the difference between 15lb and 30 lb tar paper? The difference between 15-lb and 30-lb roofing felt paper 15-lb felt paper weighed 15 pounds per 100 sq. ft. (one roofing square) and 30-lb felt paper weighed 30 pounds per square. Some customers prefer 30-lb felt paper because it is a thicker product, less likely to tear, and should wear better over time.
Also to know, what is the thickness of 30 felt paper?
Roofing Paper Thickness The most commonly used is #15, which comes in rolls 3 feet wide, is 144-feet long and covers approximately four squares per roll, or approximately 400 feet of roof. Felt #30 also comes in rolls 3 feet wide and covers approximately two roof squares per roll, or approximately 200 feet.
What is building paper used for?
The purpose of building paper is initially to prevent wind from penetrating into a wall and secondly to act as a backup moisture barrier behind cladding. In wet regions, the second function is very important since moisture in a wall is definitely not desirable.