10 In 12 Roof Slope

Most roof s have a pitch in the 4 12 to 9 12 range.

10 in 12 roof slope.

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. How do you calculate a roof pitch. Drag sliders to animate the results and diagram.

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. Simply put it s a shallow roof. For example if you measure 4 inches the pitch of your roof is 4 12. Built up roofs should be installed on roof slopes 0 25 12 or greater 2015 irc r905 9 1 except for coal tar built up roofs that have a minimum roof slope of one eighth unit vertical in 12 units horizontal 1 slope.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. The triangle diagram will be re drawn to scale with all dimensions marked. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. Roof pitch is a term describing how steep or flat your roof slope is. Metal roof panels should be installed on roof slopes according to particular seams 2015 irc r905 10 2. Asphalt shingles can only be installed on roof slopes of 2 12 or greater.

Pitch angle precision color. Roof pitch refers to the slope which the rafter creates. The combination of two numbers are used to display or show the roof pitch. 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.

Minimum roof slope of. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. This will give you the rise over run or pitch. Asphalt shingles minimum roof slope roof pitch r905 2 2.

After entering all of the values the roof pitch calculator automatically gives you the values of the roof pitch roof pitch and roof pitch x 12.