Pitched Roof Area Formula

Therefore mark off 12 inches on the level and place it down horizontally against the roof rafter.

Pitched roof area formula.

To do that you need to accurately calculate the area of your roof. L h 2 area calculating an area of a triangle when estimating a roof. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. The length l times the height h of a triangle is twice its area a2.

If your number is 1 3 squared would yield 1 9. The incline or pitch of a roof can be easily measured with a level tape measure and a pencil. Fortunately you don t have to know complicated geometry to factor in the slope of your roof. How to calculate the roof area of a building 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.

The roof s pitch is the number of inches the roof rises in 12 inches. Roof pitch is given as the number of inches in height change over the distance of one foot. You need only a level and a tape measure to find the rise of your roof. Dividing by 12 gives the ratio of inches in rise per distance.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. The roof slope height is 6 98m. Calculating area is easy in two dimensions but nearly all roofs slope up to a peak which adds a third dimension. Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

Watch this short video titled area of a roof instead. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Divide your roof pitch by 12.

This would yield 1 3 next square your result. 1 roof square 100 square feet. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. To accurately calculate the area of your roof you must first determine its slope or pitch. Measuring the roof s pitch.