2 In 12 Roof Slope

Divide the rise by the run and multiply by 100.

2 in 12 roof slope.

For a 3 8 inch in 12 inch slope. 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. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. I am going to be roofing a building that has some areas that are 2 in 12 pitch. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. For a 6 1 2 inch in 12 inch slope 6 1 2 6 5 arctan 6 5 divided by 12 arctan 0 54167 28 44 slope.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. Also if asphalt shingles are installed on a roof slope of 2 12 to 4 12. Simply put it s a shallow roof.

Roof pitch refers to the slope which the rafter creates. Asphalt shingles can only be installed on roof slopes of 2 12 or greater. Please share any tricks or tips for making this roof water tight. I am going to be using comp shingles and double felt.