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Roofing Glossary: L

Roofing terms that begin with ‘L’

Our roofing glossary defines common roofing terms. Please let us know if we are missing any words!

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“L” Flashing
Continuous metal flashing consisting of several feet of metal. Used at horizontal walls, bent to resemble an “L”.

Laminated Shingles
Shingles made from two separate pieces that are laminated together. Such as GAFMC Timberline®Series, Country Mansion® and Grand Sequoia®Shingles. Also called dimensional shingles and architectural shingles.

Laps
The area where roll roofing or rolled underlayments overlap one another during application (see also side laps and end laps).

Lap Cement
An asphalt-based cement used to adhere overlapping plies of roll roofing.

Liberty
Self-adhering low slope roofing. Liberty™ systems are applied without torches, open flames, hot asphalt, or messy solvent-based adhesives.

Low Slopes
Roof pitches less than 4/12 are considered low sloped roofs. Special installation practices must be used on roofs sloped 2/12-4/12. Shingles can not be installed at slopes less than 2/12.