Minimum Slope Rolled Roofing

Minimum pitch for metal roof.

Minimum slope rolled roofing.

The minimum roof slope for metal roofs is dependent upon the roof profile. For steep slope roof systems ibc 2018 provides for a 1 12 minimum roof slope for mineral surfaced roof roll roofing. 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. 2 1 2 12 minimum roof slope for clay and concrete tile.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The corrugated metal roof minimum slope is 5 degrees. Learn about the liberty sbs self adhering base ply sheet. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. 3 12 minimum roof slope for metal roof panels with nonsoldered seams. Mineral surfaced roll roofing minimum roof slope roof pitch r905 5 2.

Match the roofing on the covered porch with the main roof. For example you may think you want classic composite shingles on your roof but if the pitch is below a certain ratio you may be forced to install a different type of roofing perhaps rolled roofing or. Mineral surfaced roll roofing can only be installed on roof slopes of 1 12 or greater 8 slope. The minimum pitch for shingles is 1 6 which is equivalent to 4.

2 12 minimum roof slope for asphalt shingles photovoltaic pv shingles and building integrated pv. This means for every 12 horizontal units the roof must rise a minimum of 1 vertical unit. Determine the minimum slope of the roof based on the roofing material. Asphalt shingles continue to be the most widely installed roof covering option in north america.

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. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. Slate shingles minimum roof slope roof pitch r905 6 2.

Liberty sbs self adhering roofing system will provide long lasting protection for the low slope areas of your property without the danger or hassles associated with the installation of other conventional roofing products. Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch.