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There are currently 4 names in this directory beginning with the letter L.

Laminated shingles

Strip shingles containing more than one layer of tabs to create extra thickness. Also called dimensional or architectural shingles.

Lap cement

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

Louver

A slanted opening for ventilation.

Low slope application

Method of installing asphalt shingles on roof slopes between two and four inches per foot.