How To Estimate Number Of Shingles For Roof

To do this you need to note that one tab will be equal to 1 foot.

How to estimate number of shingles for roof.

Divide the total footage by 100 to determine the number of squares in the. Compute the area of the whole roof and determine the number of bundles. Starter strip the perimeter of the roof in lineal feet. Enter appropriate roof pitch slope.

33 square feet per bundle 100 square feet per square 4 nails per shingle. While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12. If the existing shingles are standard 3 tab shingles you can get this measurement by taking note of the number of tabs along the eaves and ridges then determine the length in feet. How to estimate roofing materials.

Use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house. Also have a couple of bundles spare on hand to cover wind damage etc. There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these. Measure the length and width of each portion of the roof multiply length by.

You will then have to get the measurement of the rake of the roof. For a simple room this will be very easy. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. To find the squares divide the overall roof area by 100 and then round up.

Measure your roof accurately. 3 bundles per square. How to use roof calculator. This is simply 100 square feet of roof.

Find the square footage of the roof. Determine the bundles of shingles. Be sure to add a couple of bundles for double first row and capping. Ridge length top ridge plus the 4 hips in lineal feet.

Total shingles needed the number of packs needed to cover the roof but does not add additional packs needed for ridge capping and starter strips. Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. However for larger more complicated shapes you will need to work slowly.

With that as background you are now ready to estimate how many shingles you will purchase for. Multiply the length and height of the roof together to work out the number of square feet that you need to cover. For instance if the roof is 1550 square feet then it is 16 squares. Remember to work out the total square footage around the whole of your house.