Use our roof pitch calculator to find the pitch of your roof.
2 12 pitch roofing materials.
The run always remains constant at 12 inches.
A flat roof has a slope of 2 in 12 or less.
Conventional slope roof range between 4 in 12 and 8 in 12.
Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.
Roof pitch defined and explained.
Wood shingles require a minimum roof.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
Or the colon can replace the slash as in 2 12 or 7 12.
There are two main categories of roofing.
Pitch is the term used to describe the angle slope or slant of your roof.
Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.
Metal roof shingles require a minimum roof pitch of 3 12 or greater.
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.
Anything more than 9 in 12 is considered steep.
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 roof pitch determines suitable roofing systems.
Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.
Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline.
For example a 4 12 pitch roof that is 100 square feet.
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.
The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.
It affects walkability as well as drainage and roofs in areas of high rain.
I ve been reading and reading but haven t found a good answer.
Rolled roofing material is often used on roofs that are low sloped.
100 1 054 105 4ft 2.
Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.
Outside of the u s a degree angle is typically used.
Roof pitch area multipliers.
Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.