Print full scale paper templates cut and fold over wood to mark and cut angles.
Plan roof area formula.
A rafter for a roof with a 6 12 slope will be 1 118 times as long as the.
If you re planning to put a new roof on your house it s important to purchase enough matching shingles to complete the job.
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.
For example if your roof s pitch is 4 in 12 you would divide 4 by 12.
How to calculate the roof area of a building.
The most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans.
Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.
The roof slope height is 6 98m.
Area is defined as the expanse or measurement of a given surface and there are a few methods for measuring your roof s area.
Our roof calculator uses base length and base width to find the estimated area.
Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing material calculator.
Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps.
To do that you need to accurately calculate the area of your roof.
Shingle roofs typically have a life span of 15 30 years.
If your number is 1 3 squared would yield 1 9.
Roof pitch is given as the number of inches in height change over the distance of one foot.
Once you have your roof s pitch divide the number by 12.
This would yield 1 3 next square your result.
Divide your roof pitch by 12.
Rafter join detail hip roof framing hip to common to ridge join diagram.
Hip roof framing calculator plan diagram with full dimensions.
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.
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.
Adjust to suit for a good straight fascia add an extra 20 mm or so to the tails of all your rafters total length.
The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.
Dividing by 12 gives the ratio of inches in rise per distance.
