| Term | Definition |
|---|---|
| UL |
Underwriters Laboratories, Inc. Lon Smith Roofing is a Fort Worth Roofing Company |
| UL label |
Label displayed on packaging to indicate the level of fire and/or wind resistance of asphalt roofing. Lon Smith Roofing is a Fort Worth Roofing Company |
| 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. Lon Smith Roofing is a Fort Worth Roofing Company |
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