Rool Roofing Pitch

A typical roof has three layers a felt layer and two layers of overlapping shingles.

Rool roofing pitch.

Rolled roofing is not recommended for roofs that have a greater than a 2 to 12 pitch. Many factors determine which roofing materials you can use and one make or break factor is the slope of the roof known as roof pitch. Roll roofing is different. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Installation tips and guides. The material is based on the same materials used in asphalt shingles. Wood shingles require a minimum roof pitch of 3 12 or greater. The installation process known as torch on roofing is often used on commercial.

The function of the roof in weather and the environment determines the minimum pitch for a roof. The roof pitch is necessary for two things one estimating the amount of material to be ordered for the job and two knowing what materials are suited for the roof. Modern technologies have significantly improve the performance of bitumen roll materials to extend their service life of up to 15 25 years and made them more universal. Wood shakes require a minimum roof pitch of 3 12 or greater.

Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. An organic felt or fiberglass mat saturated with asphalt and faced with granular stone aggregate. Asphalt roll roofing or membrane is a roofing material commonly used for buildings that feature a low sloped roof pitch in north america. How to install roll roofing on low slope roofs.

That is if your roof is 12 units wide it should not be taller than 2 units for rolled roofing. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

How to install roll roofing on a flat or pitched roof with your own hands. If your roof pitch declines up to 1 inch vertically for every 12 inches horizontally 1 12 pitch it is a good candidate for rolled roofing as long as you use the concealed nail method of fastening. This quick and easy roofing solution consists of felt backing that is impregnated with asphalt and coated with minerals. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.