Surface Area Of Sloped Roof

How do you calculate the actual roof area of a sloped roof.

Surface area of sloped roof.

A flat roof has a slope of 2 in 12 or less. There are two main categories of roofing. Ditto if gutters contain a significant amount of gravel washed off the surface of the shingles. I ve tried many things with zone seo upwards downwards with adding additional parameters such as bottom zone area but nothing works.

Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. Multiply the hypotenuse by the length of the roof. 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. 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.

If the granular surface of asphalt shingles is worn and if shingles are cupped and dog eared it s time for a new roof. If the roofing is lumpy and uneven there are probably two or more layers of shingles that weren t well installed. 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. The result is the surface area of the sloping roof.

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. Steeper sloped roofs are considered more aesthetically pleasing and last longer. The run always remains constant at 12 inches. And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier.

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. For multi pitched roofs simply add the areas of all common pitches together by toggling layer visibility from the summed layer identified by the eye symbol at the left of the layers control. Calculate the area of the wall below the gable by multiplying the width of the wall by the height of the eaves.

Anything more than 9 in 12 is considered steep. Roof pitch affects the actual area of the roof. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. So you re thinking of reroofing the house yourself and want an estimate for how much roofing material you.

Depending whether the roof area is measured horizontally. Now you re ready to price out the materials. 25 x 20 500.