Pitched Roof Area Formula

One of users asked us to create calculator which will help him estimate hip roof parameters like rafter s lengths roof rise and roof area.

Pitched roof area formula. All formulae are below the calculator. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Roof pitch degree table. These roofs have a pitch less than 4 12.

Roof width m x roof slope height m half roof area m take this example of a perfectly square house with 76m floor space a 45 pitched roof and a 2 35m roof height. Roof pitch affects the actual area of the roof. Add 1 then take the square root. So keeping with our roof pitch of 4 this gives us 1 9.

Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. For example if your roof s pitch is 4 in 12 you would divide 4 by 12. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Once you have your roof s pitch divide the number by 12. How to calculate the roof area of a building. If your number is 1 3 squared would yield 1 9. 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.

This would yield 1 3 next square your result. High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. The roof slope height is 6 98m. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used.

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. You can also calculate roof pitch even without using a roof slope calculator. To accurately calculate the area of your roof you must first determine its slope or pitch. They have a pitch ranging from 4 12 to 9 12.

Image 1 12 to 12 12 roof pitch 7 12 pitch. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. The maths behind this number is that it is the square root of rise run 2 1.