Ranch house using asphalt roof shingles.
Formula for estimating roof replacement.
This gives us a 3d roof area of 1 625 sq ft.
For a hip type roof.
Installation would be 1 64 per sq ft.
This is because a steep sloped roof requires a taller chimney and more lumber for framing.
If overhangs are 6 add 1 foot to each side.
If you re estimating materials for your roofing project you can use our roofing calculator to estimate the number of squares you ll need or use our roof pitch calculator to find the pitch.
A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof.
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Roofing cost can vary widely depending on the size and complexity of your roof type of materials you use as well as your location.
1 roof square 100 square feet.
Find the square footage of the roof.
Calculating an area of a triangle when estimating a roof.
The average roof replacement cost is 4 200 6 600 on a 1 600 sq ft.
Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage.
If it has overhangs add them to your sizes.
1 measure your roof with a tape measure go corner to corner and measure ground dimensions of your home.
All pricing information on this page is based on average industry costs and is subject to variance for project specific materials labor rates and requirements.
The exact same materials and accessories will cost you about 114 124 per square on a gable roof and 127 138 per square for a hip roof.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
Assuming this is a hip roof we multiply this by 1 1 which gives us roughly 18 squares or 1 800 square feet of the roof surface.
If overhangs are 2 feet on front an back and there are no overhangs on the sides add 4 feet to the appropriate side.
However the end result may be well worth it as your roofing material is estimated to last up to 50 longer and will require less maintenance.
If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.
This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof.
If you have multiple sections of roof find the area of each and add them together to find the total area.
The length l times the height h of a triangle is twice its area a2.
Find the area of a roof multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof in square feet.
