ATS-13C 100% Acrylic Clear Roof Tile Sealant is a premium quality acrylic emulsion clear sealer/finish that penetrates and bonds to a variety of roofing substrates, including asphalt shingles. It also demonstrates excellent adhesion to ATS-13 100% Acrylic Pigmented Roof Tile Sealant, as well as other properly prepared, previously painted surfaces. It provides an attractive satin-gloss that resists dirt, cracking, chipping, mildew, algae, alkali, is non-yellowing, low VOC, and provides excellent product versatility and is easy to apply.