how do i measure my roof for shingles?

Answer 1

In order to estimate how many shingles you'll need, first you need to estimate the total square footage of your roof's surface. Just measure the length and width of each plane on the roof, including dormers. Then, multiply length x width to get the square footage of each plane. Simply add the square footage of each of the planes together to derive the total square footage of your roof.

EXAMPLE:

Plane 1: 120' x 100' = 12,000 sq. ft.
Plane 2: 120' x 100' = 12,000 sq. ft.
Plane 1 + Plane 2 = 24,000 sq. ft. for the total square footage of the roof.

Roof surfaces are measured in "squares." A "square" is an area of roof which measures 100 square feet. To determine the number of squares on the gable roof above, for example, simply divide its total of 24,000 square feet by 100. Which means you will need 240 "squares" of shingles to cover it. The most common type of shingle, called a three-tab or strip shingle, is generally packaged three bundles per square.

If this is a new roof, you will also need 240 squares of underlayment (no underlayment is needed if you are applying shingles directly over an existing asphalt roof). Underlayment usually comes in rolls of four squares each, so covering 240 squares would require 60 rolls of underlayment.

Good luck!

Answer 2

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Answer 3

If you have a straight run no hips or valleys just get the square footage by multiplying rake (the edge that goes up) eave (the horizontal part ). I assume you are doing it in feet.
let say you have a rake of 16 feet and an eave 40 feet.
Then you have 640 square feet or 6.4 squares. The total roof will be 12.4 squares. Why do we need squares? One square contains 3 bundles of shingles. Then the total number of bundles is 13x3=39 (get 40 bundles). Ooh do not forget ridge vents and more shingles.

If you have hips an valley then do some fancy math to compute the total area and have fun.

For more information check this out http://www.owenscorning.com/around/roofing/terms.asp

Answer 4

length X width, then the area you get as an answer , divide that by 100. because 100 sq feet too 1 square

Answer 5

find the square feet. They are sold by the square foot.

Answer 6

try homedepot.com or call a contractor.