Formula For Estimating Roof Replacement

This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof.

Formula for estimating roof replacement.

Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more. However if you use premium materials such as metal wood shingles clay tile etc the cost of your roof will be at least 9 500 16 000. 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. A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof.

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. If overhangs are 6 add 1 foot to each side. If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. If it has overhangs add them to your sizes.

For estimating purposes we also assume that there is a chimney a couple of dormers and two layers of old shingles that need to be torn off and removed before a new roof can be installed. 1 measure your roof with a tape measure go corner to corner and measure ground dimensions of your home. 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. Find the square footage of the roof.

Roofing cost can vary widely depending on the size and complexity of your roof type of materials you use as well as your location. This gives us a 3d roof area of 1 625 sq ft. This is because a steep sloped roof requires a taller chimney and more lumber for framing. Ranch house using asphalt roof shingles.

The length l times the height h of a triangle is twice its area a2. Installation would be 1 64 per sq ft. 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. Calculating an area of a triangle when estimating a roof.

If you have multiple sections of roof find the area of each and add them together to find the total area. 1 roof square 100 square feet. For a hip type roof. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

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. 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. The average roof replacement cost is 4 200 6 600 on a 1 600 sq ft.