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ABC Roofing Terms Glossary

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U

Term Definition
UL

Underwriters Laboratories, Inc.
UL label

Label displayed on packaging to indicate the level of fire and/or wind resistance of asphalt roofing.
Underlayment

A layer of asphalt saturated (sometimes referred to as tar paper) which is laid down on a bare deck before shingles are installed to provide additional protection for the deck.
Glossary 2.64 is technology by Guru PHP