Surface Area Of A Roof

Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used.

Surface area of a roof.

Depending whether the roof area is measured horizontally. And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier. Once you have your roof s pitch divide the number by 12. The average roof is 3 000 square feet or around 30 squares.

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

Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive. Calculating the surface area of a sloped roof can be time consuming without the right tools. How roof area is calculated. Place the other end of the level at the peak of the roof and hold it level.

Roofing material is estimated by the square which is equal to 100 square feet. This would yield 1 3 next square your result. This is expressed in terms of how many inches the roof rises for every foot of horizontal distance. For example if your roof s pitch is 4 in 12 you would divide 4 by 12.

Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. Roof pitch affects the actual area of the roof. Area is defined as the expanse or measurement of a given surface and there are a few methods for measuring your roof s area.

Mark a level 12 inches from one end. 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. Our roof calculator uses base length and base width to find the estimated area. If your number is 1 3 squared would yield 1 9.

It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Start the project with a roof area calculator. Determine the slope of the roof. Multiply the length of the roof by the width to establish the surface area in square feet.