Art-Loc is a self-sealing, single layer, interlocking, asphalt shingle. Shingles are manufactured with 1 layer of fiberglass mat coated with asphalt on both sides, and surfaced on the weather-exposed side with mineral granules. Shingles have approximate dimensions of 18in x 18in.
Ratings
UL 2218 (2020)
Product has met Class 4 requirements of UL 2218 (2020) when installed over minimum 15/32in thick APA-rated plywood decks.