Allow the primer to dry until tacky to touch, but non-transferable to finger. Air pockets may form if the membrane is installed over a wet primer. Apply a thin film of uniform thickness to the substrate in single strokes. Shake, mix, or stir primer thoroughly. Prime only an area that will be covered by a membrane within four (4) hours. Substrate temperature should be at least 55☏ (fifty-five degrees Fahrenheit). Exterior Primer: Should be applied with a short nap roller, notched trowel (no larger than 1/16″ x 1/32″ x 1/32″) or paintbrush.Substrate temperature should be at least 65☏ (sixty degrees Fahrenheit). Interior Primer: Should be applied with a short nap roller, flat trowel, brush applicator, or sprayer.Apply Interior or Exterior Primer as required: Re-roll membrane to half the room’s depth. Measure and pre-cut membrane to four (4) to six (6) inchdes longer than required size. Also ideal for use with radiant heated floors and low voltage tile warming systems. Also for use under brick, pavers, hardwood, and manufactured wood. Recommended for installations under latex-modified thin-bed and medium- bed mortar installations ( ANSI 118.4) of ceramic, porcelain, stone, slate, marble, and granite tiles. Substrates must be well adhered to and clean of wax, petroleum sealers, dirt, grease, oil, or other bond-breakers. All installations begin with a clean, dry floor. A successful overnight Pull Test is required. Some backer boards are not suitable for vertical CSM application. Allow Southcrete™ 25 Acrylic Mortar Admix to cure 24 hours prior to applying Primer. Apply Southcrete™ 25 Acrylic Mortar Admix to highly porous surfaces such as mud beds, gypsum / gypcrete, lightweight concrete, and patching / leveling compounds. Apply cementitious parge coat to concrete block and allow to cure before installation. Contact SGM for instructions if MVT drive is in excess of 10#/1000SF/24HRS. If MVT is present, conduct ASTM F-1869-98 test for emissions. Perform Black Mat MVT (Moisture Vapor Transmission) test. Ensure joist spacing of no more than sixteen (16) inches on-center and a double sub-floor consisting of minimum ? inch sheets of exterior grade plywood. Maximum variation of ¼ inch in ten (10) feet from the required plane.
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Surfaces must be free of holes, projections, moisture, or bond breakers. Grind bumps and level slab depressions with quality latex underlayment in accordance with manufacturer’s instructions.
Surfaces must be level, structurally sound, and meet 1/360 for ceramic and porcelain tile or 1/720 for stone tile on live or dead loads. Other substrates include ceramic and porcelain tile, stone, VCT/ VAT, metal, radiant-heated, painted and sealed floors, and floors damaged by dry shrinkage and structural movement. Wood: Exterior or exposure 1 plywood, APA-rated sheathing, sturdy-I-floor, hardwood, tongue and groove, and oriented strand board (OSB) standard face (gap between sheeting as required).Concrete backer board, mud beds, gypsum, lightweight concrete, and patching compounds. Poured concrete, pre-stressed, and pre-cast concrete. ASTM E 492 / ASTM E989-08: Impact Insulation Class IIC = 65.ASTM E 90-04 / ASTM E 413: Sound Transmission Class STC = 67.ANSI 118.10: ANSI Specification for Load Bearing, Bonded, Waterproof Membranes For Thin-set Ceramic Tile And Dimension Stone Installation Meets or Exceeds ANSI 118.10.
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