70 x 34 = 2380.. every 100 square feet makes 1 square,, so 2380 = 24 squares plus your cuts and ridges & starters,, usually you would figure an extra 2 squares.
It depends on the size of the shingle!
Some concrete shingles did contain asbestos. Many shingles never were made with asbestos.
Roofing shingles are measured in "squares". One square is 100 square feet. *ASSUMING YOUR ROOF IS FLAT OR NEARLY FLAT* 16' x 80' = 1280 square feet. You'll need 12.8 (or 13) squares of roofing shingles. The majority of roofing shingle bundles are 3 bundles per square. 13 squares times 3 bundles per square = 39 bundles (minimum). Good luck!
26 shingles in a bundle of three tab asphalt shingles
A square of shingles covers 100 square feet. So, you need 1732/100=17.32 square of shingles. If you can only buy whole number squares of shingles, you will need 18 squares of shingles to cover 1732 square feet.
1.2 squares.
20 squares or 60 bundles
Standard fiberglass shingles come 3 bundles to the square.
Shingles vary in dimensions, and sometimes there are specific bundles of shingles made for the sole purpose of ridge coverage. If you are using the house shingles for ridge, take the length of ridge to be covered, divided by the exposure of the shingle to determine the number of ridge pieces needed. Normally you will get three pieces out of one full shingle. Once you determine the number of full shingles, find out how many shingles are in a bundle and purchase the smallest bundle of shingles necessary to complete the job.
American shingles are 36" Metric Shingles are 1 meter long or 39-3/8" Many American manufacturers are selling metric shingles, not american. So check what you are buying.
You need 18 squares, which is 54 bundles.
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