Recommended for well draining roofing surfaces only. Excellent adhesion on weathered wood, shakes, plywood, clapboard, primed metal, galvanized, aluminum, tin, copper, asbestos, asphalt, urethane, polyester, primed styrofoam, fiberglass, built-up-roofs, bonded roof gravel, rolled roofing, modified bitumen membranes, mineral surfaced roofing, concrete tiles, clay tiles, masonry tiles (flat or barrel), primed synthetic or aluminum, adobe, slate, slab, and various other substrates. LIQUI-TARP® is ideal for residential, commercial and industrial applications.

SURFACE PREPARATION: Apply only to a clean, sound, dry, prepared roof surface by thoroughly cleaning to remove any loose dirt, grease, previous coating or other foreign materials. Patch cracks, flashings, valleys, vents, etc., less than 1/16 inch, with PERMAPATCH™, a Waterproof Caulk and Sealant. Cover any holes, voids, cracks, etc., larger than 1/16 inch, with Polyester Fabric, Burlap, PermaTape™, PermaMat™ or other porous covering and adhere to surrounding roof surface. An optional primer coat of ROOF-PRIME™, PERMABOND™ or METAL-PRIME RED-OX™ is recommended. If a primer was applied, it is essential that the primer surface is clean and dry and free of all moisture. If no primer was applied, proceed to apply LIQUI-TARP® following Application Procedure below. LIQUI-TARP® will resist mildew growth, but will not kill mildew already on the surface. Eliminate existing mold, mildew and algae with a chlorine/water wash, rinse thoroughly and allow surface to completely dry before proceeding. Metal: Clean surface of all grease, oil and foreign matter before priming. Rusted metal and uncoated metal must be primed with METAL-PRIME RED-OX™, a Red Iron Oxide Primer Sealer. Use a degreaser on new galvanized or coated metals which have oils or surface treatments. Check LIQUI-TARP® adhesion on new galvanized or coated metal by applying to a small area and evaluating after 48 hours. If lack of adhesion is present after evaluating, metal must be lightly scuffed without penetrating the coated finish or galvanizing. If applicable, use METAL-PRIME RED-OX™ to prime the penetrated areas. APPLICATION PROCEDURE: Stir well before using. Do not thin, use product as is. Do not apply when temperatures are below 45 degrees Fahrenheit or when humidity is very high. Do not apply when coating will be subjected to rain or heavy dew before it has had enough time to dry (approx. 2 to 4 hours). Drying time will vary depending on temperature, humidity and location. Apply using brush, roller or spray. Spread coating uniformly. Spread Rate will vary depending on surface. Apply each coat between 12 to 16 mils wet film thickness. Wait at least 12 hours before applying a second coat. Two coats resulting in a minimum 10 mil total dry film thickness is recommended. Apply first coat in a North/South direction and the second coat in an East/West direction creating a cross-hatch application. Alternate One-Coat Spray Application Method: Divide the roof into workable sections and spray as follows: Use a tight overlapping “Z” pattern to apply initial coating. Immediately recoat using a tight overlapping “N” pattern over the area originally coated. This will provide a one-coat cross-hatched application to insure complete coverage. Total application to result in 16-20 mils wet. Proceed using this method for the balance of the roof. AIRLESS SPRAYERS: Use at least a 1 gallon per minute piston type airless sprayer with a minimum tip size of .021. Remove all line filters and gun filters before spraying. CLEAN UP: Clean up all spills, tools and overspray immediately while the coating is still wet with warm soapy water.