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# How many squares do I need?

#1
10-08-06, 12:25 PM
Member
Join Date: Feb 2003
Location: New York, United States
Posts: 360
How many squares do I need?

Stopped at a home center and thought they would have info on how many squares or bundles of shingles I would need. Well, one bundle stated it covered a 100 ft, is this square feet? Another one gave the information in metric..........I am sure there is a very simple formula; I have a shed, each side of the shed roof is 120 square feet, thus front and back side would total 240 Sq feet. Based on that, how many square or bundles do I need? Sure would appreciate some help on this one...........I thought it would be an easy answer at a home center. Look forward to hearing from someone. Thanks

#2
10-08-06, 12:47 PM
New Member
Join Date: May 2006
Location: north
Posts: 3,821
Typical 3 tab shingles are packed in bundles. It takes 3 bundles to cover approximately 100 sq. ft.

If you have an area of 240 sq. ft. you would need 8 bundles.

It should have been an easy answer at HD..

#3
10-08-06, 01:36 PM
Member
Join Date: Jul 2006
Location: St. Louis Missouri
Posts: 225
Be sure to add some for waste - and for ridge caps (if appropriate). For caps, each shingle will yield 3 caps, each with about 5" exposure, so each shingle will cover about 15" of ridge - measure the length of the ridge, divide by 15" - that how many shingles you'll need - compare that to the number in a bundle.

Also, make sure the bundles you get all have the same run number - colors vary slightly between runs. It also helps if you use shingles from several bundles alternatively, to make color variations blend into the whole roof. (Kind of like mixing two can of paint, to eliminate differences between cans.)

#4
10-08-06, 01:42 PM
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Join Date: Feb 2003
Location: New York, United States
Posts: 360
Thanks!

Thanks for the quick response and you are right, this should have been an easy answer at HD. Even when I asked the one clerk what the 100 feet meant.......square feet for linear feet, his response was "always square feet". So I then ask him if that is true why would they not show it as 100 sq.ft when this other manufacturers describes area as linear feet? No answer.

This will help me allot, thanks for the time.

#5
10-08-06, 02:13 PM
Member
Join Date: Jul 2003
Location: Eastern USA
Posts: 948
Box stores are there to sell products, not provide expert knowledge. Do not consider what you are told at a box store to be 100% accurate. I have heard some real dandies at the box stores. In a few cases I even chimed in with my opinion after the genius walked away.

As far as the roofing, a square is supposed to cover a 10'x10' area. Do not waste time cutting your own caps, buy cap shingles. The number of bundles in a square varies depending on shingle type and years of warranty. 30yr Dimensionals are 3 bundles, 40yr are 4 and 50yr are 5 for the shingles we always use.