Length =

Exposure =

#Per Square =

Estimates the number of shingles needed per square (100 square feet) of roof area.

[http://infinitysw.s3.amazonaws.com/cengage/shinglespersquare.png 100%]

-Length: Length of the shingle.

-Exposure: Exposure of the shingle.

-#Per Square: Number of shingles per square.

Estimate the number of shingles you need per square (100 square feet) of roof area if you are using 3 tab asphalt shingles where the length of each is 36in and the exposure is 5in.

Shingles

-Length: 3ft

-Exposure: 5in

You need 80 shingles per square.

Length

Exposure

#Per Square

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