Minimum Slope Rolled Roofing

Match the roofing on the covered porch with the main roof.

Minimum slope rolled roofing. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. Minimum pitch for metal roof. 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.

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. The minimum pitch for shingles is 1 6 which is equivalent to 4. For steep slope roof systems ibc 2018 provides for a 1 12 minimum roof slope for mineral surfaced roof roll roofing.

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. Asphalt shingles continue to be the most widely installed roof covering option in north america. Minimum pitch for corrugated metal roof. Determine the minimum slope of the roof based on the roofing material.

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. 2 12 minimum roof slope for asphalt shingles photovoltaic pv shingles and building integrated pv. Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch.

Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. Mineral surfaced roll roofing minimum roof slope roof pitch r905 5 2. Mineral surfaced roll roofing can only be installed on roof slopes of 1 12 or greater 8 slope. 3 12 minimum roof slope for metal roof panels with nonsoldered seams.

With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. The minimum roof slope for metal roofs is dependent upon the roof profile. This means for every 12 horizontal units the roof must rise a minimum of 1 vertical unit. Learn about the liberty sbs self adhering base ply sheet.

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. Slate shingles minimum roof slope roof pitch r905 6 2.