Products / TAMKO ASTM Tile Underlayment

TAMKO ASTM Tile Underlayment is an asphalt-saturated organic felt coated on both sides with weathering-grade asphalt and surfaced with granules, applied over the deck before concrete tile as a secondary moisture layer. The May 2020 data sheet from the Green Cove Springs, Florida plant gives a 36 in. x 36 ft. roll (108 sq. ft., 102 sq. ft. of coverage, one square); TAMKO sells it as is, without warranty.