Plan Roof Area Formula

Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps.

Plan roof area formula.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. 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. Calculating area is easy in two dimensions but nearly all roofs slope up to a peak which adds a third dimension. Once you have your roof s pitch divide the number by 12.

Area is defined as the expanse or measurement of a given surface and there are a few methods for measuring your roof s area. This applies to lengths as well as areas. If your number is 1 3 squared would yield 1 9. Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing material calculator.

Shingle roofs typically have a life span of 15 30 years. A rafter for a roof with a 6 12 slope will be 1 118 times as long as the. That gives you 5 590 square feet which is the actual area of the surface of the roof. If you re planning to put a new roof on your house it s important to purchase enough matching shingles to complete the job.

The roof slope height is 6 98m. Dividing by 12 gives the ratio of inches in rise per distance. This would yield 1 3 next square your result. Our roof calculator uses base length and base width to find the estimated area.

To do that you need to accurately calculate the area of your roof. Adjust to suit for a good straight fascia add an extra 20 mm or so to the tails of all your rafters total length. And that s the number you were looking for. Print full scale paper templates cut and fold over wood to mark and cut angles.

The base width is the distance from one corner of your roof to the other at its base on the short side of your house. Rafter join detail hip roof framing hip to common to ridge join diagram. Roof pitch is given as the number of inches in height change over the distance of one foot. Hip roof framing calculator plan diagram with full dimensions.

The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. How to calculate the roof area of a building. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.