How To Determine How Many Shingles Needed For Roof

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.

How to determine how many shingles needed for roof.

To properly calculate how many bundles of shingles are needed to roof your home you need to calculate the total square footage of the roof and convert it to squares. Also have a couple of bundles spare on hand to cover wind damage etc. 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. 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.

Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. 100 sq ft 21 shingles per bundle. 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.

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. The result is 240 and this means you would need 240 squares of shingles to cover that roof. Singles are often sold in bundles with three bundles equaling one roof square.

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. Once you know this number you can estimate the final price of the materials. Roof surfaces are measured in squares a square is an area of roof which measures 100 square feet. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100. For example you will need to figure out the exact number of shingles required to cover the entire roof area. 3 bundles per square. A square represents 100 square feet of area covered by shingles.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. At this point you will also need to estimate or measure the overhang if you have one. 33 square feet per bundle 100 square feet per square 4 nails per shingle.