Formula For Estimating Roof Replacement

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.

Formula for estimating roof replacement.

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. 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 overhangs are 6 add 1 foot to each side.

The roof shingle calculator is a free estimator that serves a useful purpose during any roof repair or replacement project. Calculate the size of your roof and estimate how many bundles of asphalt shingles rolls of felt and squares of roofing material are needed for a new roof. 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. Find the square footage of the roof.

This gives us a 3d roof area of 1 625 sq ft. 1 measure your roof with a tape measure go corner to corner and measure ground dimensions of your home. Add the price per square of materials to get an estimated material cost. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

Once you enter the basic roof dimensions and enter the type of roof you will get a very accurate result telling you exactly the amount of shingles that are required to cover your new roof. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. The length l times the height h of a triangle is twice its area a2. If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.

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. Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more. If it has overhangs add them to your sizes.