2 12 Pitch Roofing Materials

Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.

2 12 pitch roofing materials.

A flat roof has a slope of 2 in 12 or less. 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. Metal roof shingles require a minimum roof pitch of 3 12 or greater. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

Flat and nearly flat roofs a pitch of 1 in 12 or 2 in 12 cannot be covered with shingles or shakes of any material since there is not enough angle to combat the danger of blow off. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Wood shingles require a minimum roof.

Anything more than 9 in 12 is considered steep. The run always remains constant at 12 inches. It affects walkability as well as drainage and roofs in areas of high rain. Roof pitch designations are comprised of two numbers indicating a ratio.

Or the colon can replace the slash as in 2 12 or 7 12. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. The pitch of the roof is the rise over a 12 inch run. Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline.

For that reason flat roofs are limited to these types of covering materials. A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options. Roof pitch defined and explained. For example a 4 12 pitch roof that is 100 square feet.

Use our roof pitch calculator to find the pitch of your roof. Roof pitch area multipliers. How roof pitch determines suitable roofing systems. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.

Rolled roofing material is often used on roofs that are low sloped. A low slope roof is anywhere from 2 in 12 to 4 in 12. 100 1 054 105 4ft 2. What is the best value price compared to life compared to ease of installation material to go on top of shingle on a 2 12 pitched roof that is also comparatively easy for a handy man homeowner to install considering in order of importance price vs expected life time vs ease of installation.

Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. Outside of the u s a degree angle is typically used. There are two main categories of roofing.