2 In 12 Roof Pitch

On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length.

2 in 12 roof pitch.

What is the minimum slope for an asphalt shingle roof. The first is from the top of the roof. Or the colon can replace the slash as in 2 12 or 7 12. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow.

Roof pitch defined and explained. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Most roof s have a pitch in the 4 12 to 9 12 range. Image 1 12 to 12 12 roof pitch 7 12 pitch.

A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal. Definitions vary on when a roof is considered pitched. Asphalt shingles continue to be the most widely installed roof covering option in north america. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Roof pitch designations are comprised of two numbers indicating a ratio.

We included a roof pitch chart below the 7 12 example image and the calculator below that. A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely. The combination of two numbers are used to display or show the roof pitch. Simply mark a.

An example of a roof pitch would be a 6 12 pitch which means that the roof rises 6 for every 12 inward towards the peak or ridge. Thus pitch is typically greater in areas of high rain or snowfall. Roof pitch degree table. In degrees 10 2 in 12 or 1 in 6 is considered a minimum.

The exact roof slope in degrees is given by the arctangent. Roof pitch or slope tells you how many inches the roof rises for every 12 inches in depth. Pitch is the term used to describe the angle slope or slant of your roof. There are two suggested ways to measure a roof pitch.