Surface Area Of A Roof

Place the other end of the level at the peak of the roof and hold it level.

Surface area of a roof.

That gives you 5 590 square feet which is the actual area of the surface of the roof. 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. Once you have your roof s pitch divide the number by 12. Depending whether the roof area is measured horizontally.

This is expressed in terms of how many inches the roof rises for every foot of horizontal distance. Multiply the length of the roof by the width to establish the surface area in square feet. If your number is 1 3 squared would yield 1 9. Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Our roof calculator uses base length and base width to find the estimated area. Area is defined as the expanse or measurement of a given surface and there are a few methods for measuring your roof s area.

The average roof is 3 000 square feet or around 30 squares. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. Determine the slope 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.

You want a roof area calculator that provides accurate estimates to help you order materials such as shingles membrane roofing or ceramic tile. For example if the length is 21 feet and the width is 10 feet the surface area is 210 square feet 21. Mark a level 12 inches from one end. Roof pitch affects the actual area of the roof.

The base width is the distance from one corner of your roof to the other at its base on the. And that s the number you were looking for. Measure the distance from the surface of the roof to the bottom of the level at the 12 inch mark. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps.

The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. Roofing material is estimated by the square which is equal to 100 square feet. Calculating the surface area of a sloped roof can be time consuming without the right tools. And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier.