Surface Area Of Sloped Roof

A flat roof has a slope of 2 in 12 or less.

Surface area of sloped roof.

And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier. Anything more than 9 in 12 is considered steep. The result is the surface area of the sloping roof. Multiply the hypotenuse by the length of the roof.

That gives you 5 590 square feet which is the actual area of the surface of the roof. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. So the actual roof surface if it were laid down flat on the ground would be 1 118 times larger than the footprint of the roof. How do you calculate the actual roof area of a sloped roof.

Depending whether the roof area is measured horizontally. Calculate the area of the wall below the gable by multiplying the width of the wall by the height of the eaves. The run always remains constant at 12 inches. Roof pitch affects the actual area of the roof.

How to calculate the roof area using the building square footage the pitch of the roof. There are two main categories of roofing. So you re thinking of reroofing the house yourself and want an estimate for how much roofing material you. For example if the sloping surface is 11 18 feet wide and the roof is 30 feet long the sloping area is 335 4 square feet 11 18 x 30 335 4.

I ve tried many things with zone seo upwards downwards with adding additional parameters such as bottom zone area but nothing works. Conventional slope roof range between 4 in 12 and 8 in 12. Take your area result and multiply it by the pitch multiplier or slope correction factor found in the table above to arrive at the roof s surface area. If the roofing is lumpy and uneven there are probably two or more layers of shingles that weren t well installed.

Ditto if gutters contain a significant amount of gravel washed off the surface of the shingles. For example if the wall is 25 feet wide and the eaves are 20 feet above ground level the wall has a surface area of 500 square feet. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. 25 x 20 500.

A low slope roof is anywhere from 2 in 12 to 4 in 12. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. If the granular surface of asphalt shingles is worn and if shingles are cupped and dog eared it s time for a new roof.