ABC Roofing Terms Glossary
L
| Term | Definition |
|---|---|
| Laminated shingles |
Strip shingles containing more than one layer of tabs to create extra thickness. Laminated shingles are also called three-dimensional shingles. |
| Lap |
To cover the surface of one shingle or roll with another. |
| Lap cement |
An asphalt-based cement used to adhere overlapping plies of roll roofing. |
| Lean-to roof |
A roof with one slope only that is built against a higher wall. |
| Life-cycle cost |
The total lifetime cost of a roof. Calculated by adding maintenance costs to the installed price, then deducting the added value the roof provides when the home is resold. |
| Low slope application |
Method of installing asphalt shingles on roof slopes between two and four inches per foot. |
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