The Pitch Of A Roof Is The Number Of Feet

Contemporary houses often have flat roofs which shouldn t be completely flat but should be around 1 40.

The pitch of a roof is the number of feet.

If the rise is 4 feet over a 24 foot span then the roof pitch was said to be 1 to 6 the pitch can be expressed numerically as a fraction. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. For example a 4 12 pitch roof that is 100 square feet. Use our roof pitch calculator to find the pitch of your roof.

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. There is no standard universal roof pitch. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Per each horizontal 12 ft.

Then m 8 12. Since slope m is defined as the rise run. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. If a roof increases in height by four inches for every foot of horizontal run it is considered to have a 4 in 12 pitch or just a 4 pitch talk in terms of pitches and you will always be understood in the roofing universe.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. In the uk the typical house has a pitch between 40 50 although 45 should be avoided. So the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. 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.

Simplifying we obtain a slope m 2 3. In the usa the range of standard pitches is anywhere between 4 12 and 9 12. If the pitch is 8 it means the roof raises 8 ft. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.

The pitch of the roof is the rise over a 12 inch run. Since slope m is defined as the rise run. Roof pitch varies depending on culture climate style and available materials. A roof that rises 8 feet over a 24 foot span was said to have a 1 to 3 pitch.

A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. Per each horizontal 12 ft. If the pitch is 8 it means the roof raises 8 ft. Check that your footage measurements are within this range so you can start off on the right foot.

See the image below for more explanation on rise run and pitch. A 12 in 12 pitch is a steep 45 degree angle roof. Next you will need to use a roofing materials calculator.