How To Determine How Many Shingles Needed For Roof

An important part of any roofing repair or replacement project is being able to accurately calculate the quantity of roofing materials required to finish the job.

How to determine how many shingles needed for roof.

A square represents 100 square feet of area covered by shingles. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. Roof surfaces are measured in squares a square is an area of roof which measures 100 square feet. Compute the area of the whole roof and determine the number of bundles.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. 33 square feet per bundle 100 square feet per square 4 nails per shingle. For example you will need to figure out the exact number of shingles required to cover the entire roof area. Note that in the last 3 4 years costs of roof shingles and many accessories have gone down by an average of 18 20 currently the us national average for benchmark architectural shingles is around 74 51 square or 25 per bundle.

To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more. At this point you will also need to estimate or measure the overhang if you have one.

Once you know this number you can estimate the final price of the materials. Once you have these measurements you will need to calculate the area of the roof and then you can see how many shingles you will need. 3 bundles per square. Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry.

Be sure to add a couple of bundles for double first row and capping. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof. To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100.

Also have a couple of bundles spare on hand to cover wind damage etc. The result is 240 and this means you would need 240 squares of shingles to cover that roof. 100 sq ft 21 shingles per bundle.