Pitched Roof Area Formula

Once you have your roof s pitch divide the number by 12.

Pitched roof area formula.

You can also calculate roof pitch even without using a roof slope calculator. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Image 1 12 to 12 12 roof pitch 7 12 pitch.

High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. Roof pitch affects the actual area of the roof. Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. Watch this short video titled area of a roof instead.

A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof. This would yield 1 3 next square your result. If your number is 1 3 squared would yield 1 9. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. So keeping with our roof pitch of 4 this gives us 1 9. Therefore mark off 12 inches on the level and place it down horizontally against the roof rafter. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Roof pitch degree table. Conventional roofs are the easiest to construct and you can walk on them safely. These roofs have a pitch less than 4 12. Measuring the roof s pitch.

The roof area for a hip end is the same as for a gable end the intersection is equivalent to a hip slightly conservative so there is usually no need to consider triangles when measuring a roof. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. The roof s pitch is the number of inches the roof rises in 12 inches. The incline or pitch of a roof can be easily measured with a level tape measure and a pencil.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. Roof pitch is used to describe the slope or angle of the roof. The maths behind this number is that it is the square root of rise run 2 1. Add 1 then take the square root.

The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.