To find out how many shingles you need for your roof:
Check the width and length of the roof.
Estimate the roof pitch.
Calculate the roof area based on the measured dimensions and convert it to squares.
Multiply the obtained squares by 3 to find the number of shingle bundles you need.
Multiply the shingle bundles by 29 (the default size of the bundle) to find the number of shingles you need.
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