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When talking roofing materials. A square is considered a 10'x10' area or a 100 square feet. So you have 1,900 square feet. There are two basic types of felt: 15lb and 30lb felt. 15lb felt covers 4 sq= Total needed will be 5 rolls 30lb felt covers 2 sq= Total needed will be 10 rolls (*note, 30lb is more thick and better for your roof.

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14y ago
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14y ago

4 squares per roll works for me. 15# felt- 6 rolls, 30# felt- 12 rolls.

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12y ago

Enough to cover the roof. 15 lb. covers 400 sq. ft. per roll. 30 lb. covers 200 sq. ft. per roll.

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