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TRI-BUILT C 30 POUND FELT ASTM 4869 39 X 72 FEET 216 SQUARE FEET
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|Type||FELT ASTM, Felts|
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TRI-BUILT No.30 is underlayment is applied over the roofing deck before installation of asphalt shingles. This product is highly recommended as an underlayment for architectural shingles and is not recommended for 20 year 3 tab shingles.