Minimum Slope Roll Roofing

Residential low slope roofing can generally be divided up into two broad categories.

Minimum slope roll roofing.

This means for every 12 horizontal units the roof must rise a minimum of 1 vertical unit. For steep slope roof systems ibc 2018 provides for a 1 12 minimum roof slope for mineral surfaced roof roll roofing. Nailable base sheet layers of felt cap etc. Asphalt shingles continue to be the most widely installed roof covering option in north america.

I think of roll roofing as anything that is a building paper or felt asphalt impregnated some is solid and some is perforated to help absorb asphalt. Roofing systems have various components like. Sometimes called tar and gravel or bur the modern form of this kind of roof consists of alternating layers of bitumen and reinforcing fabrics. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

Slate shingles minimum roof slope roof pitch r905 6 2. 2 1 2 12 minimum roof slope for clay and concrete tile. So in terms of quantity a roofing roll is about the size of one composite shingle square. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Larger flat roofed applications low slope such as residential condominium complexes row homes and town houses and smaller applications such as residential porch and garage transitions from the main home where the slope of the roof changes dramatically. One msr roofing roll is usually about 36 feet long by 36 inches wide.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Rolled roofing is easy to obtain and can be found at all home improvement stores. Cap sheets can be smooth or granular. Mineral surfaced roll roofing can only be installed on roof slopes of 1 12 or greater 8 slope.

Most metal roofs will have minimum pitches of three in twelve but this might sometimes go down depending on whether there are special installation procedures issued by the manufacturer regarding that particular roofing material. This is a single layer membrane style roofing material that is heat activated by a torch during installation. Functional pitch the function of the roof in weather and the environment determines the minimum pitch for a roof. Finding the right products for your low slope roof.

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. Epdm short for ethylene propylene diene monomer is a true rubber that can be.