Rool Roofing Pitch

Built up roofs require a minimum roof pitch of 1 4 12 or greater.

Rool roofing pitch.

It has just one layer so it goes. Roll roofing is different. 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. How to install roll roofing on a flat or pitched roof with your own hands.

That is if your roof is 12 units wide it should not be taller than 2 units for rolled roofing. 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. Wood shakes require a minimum roof pitch of 3 12 or greater.

How to install roll roofing on low slope roofs. Asphalt roll roofing or membrane is a roofing material commonly used for buildings that feature a low sloped roof pitch in north america. Rolled roofing is not recommended for roofs that have a greater than a 2 to 12 pitch. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

Installation tips and guides. 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. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. A typical roof has three layers a felt layer and two layers of overlapping shingles. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

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. 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. This quick and easy roofing solution consists of felt backing that is impregnated with asphalt and coated with minerals.