Walls & Ceilings Architect/January 2008

SPEC SHEET Rollershield 450-500 sf 42-46 sm (varies) Rollershield is a high quality 100% acrylic roll Roller or Spray Application applied flexible air and water barrier. Easily applied with brush, roller or airless sprayer, it helps protect approved substrates from incidental water damage. Rollershield is available in five-gallon (19L) pails and is ready for use after pre-mixing. Air/Water Barrier Application Procedure Job Conditions - Air and substrate temperature for application of Rollershield must be 45°F (7°C) or higher and must remain 45°F (7°C) or higher for a minimum of 24 hours. Provide temporary protection to protect the wall system from damage until permanent flashings, caps and sealants are installed. Store materials within prescribed temperature limits and out of direct sunlight. Working and drying times are based upon normal room temperature conditions and will vary with temperature and humidity. Preparation - The substrate must be approved by Master Wall Inc., clean, dry, structurally sound and free of efflorescence, oil, grease, form release agents and curing compounds or anything that would affect bond. Painted surfaces are not acceptable and must be removed. Substrates must be flat and free of fins or planar irregularities greater than 1/4” in 10’-0” (6.35 mm in 3.05m). Approved Substrates Exterior gypsum sheathing (ASTM C79) Dens Glass Gold® GlasRoc® FiberBond® Durock® PermaBase® Exterior Plywood Oriented Strand Board Concrete Brick Masonry Others approved in writing Coverage 60 27 lbs kg Weight 1 hour Dry to Touch Concrete – Must have cured a minimum of 28 days prior to the application of Rollershield. If form release agents or curing compounds exist on the surface, they must be removed with a solution of muriatic acid or similar product (with appropriate precautions). Remove any residual acid by flushing with water. Brick/Masonry – If joints are not struck flush, multiple coats may be required. Contact Master Wall for more information. Sheathing Applications Sheathing gaps must be less than 1/4” (6.4 mm). For gaps larger than 1/4” (6.4 mm) WeatherStop Sheathing Tape may be used. Gap wood-based sheathing per manufacturers recommendations, typically 1/8” (3.2 mm) minimum. 2 hours Recoat Time Mixing - Thoroughly stir Rollershield into a homogenous consistency. Do not add water, over mix, or add accelerators or retarders to Rollershield. Application – Rollershield is applied by first treating the joints and fastener locations, then coating the entire surface using brush, roller, or airless spray equipment techniques. When using a foam roller, a maximum ¾” (19 mm) nap is recommended. Apply Rollershield in an even, continuous coat, maintaining a wet edge. Oriented Strand Board and other porous substrates require two (2) coats of Rollershield. For moisture protection, Rollershield must be applied as a continuous barrier with no breaks or skips. 43C 110F 45F 7C Joint Treatment—Place and center drywall mesh reinforcing tape over all joints, corners and gaps in the substrate. Immediately embed Rollershield into the reinforcing mesh and spot Temperature 2 years fasteners using a paint brush and allow to dry. Rollershield may be flashed into window, door and other openings using the same techniques. Any remaining gaps should be filled with Master Wall Trowelshield or Trowelshield and Mesh may be used as the joint treatment. Wall Treatment—Apply Rollershield to the wall surface using the foam roller or by spray applying and backrolling to a uniform thickness of 10 mils with no pinholes or voids. Clean Up-Tools and equipment can be cleaned with soapy water when Rollershield is wet. Shelf Life Limitations Not for use as an exterior finish. Information contained in this product data sheet conforms to the standard detail recommendations and specifications for the installation of Master Wall Inc. products and is presented in good faith. Master Wall Inc. assumes no liability, expressed or implied as to the architecture, engineering, or workmanship of any project. This information may be concurrent with, or superseded by other applicable documents, such as specifications and details. Contact Master Wall Inc. for the most current product information. P. O. Box 397 Fortson, GA 31808 800-755-0825 Technical 800-760-2861 www.masterwall.com ©2007 Master Wall Inc. Serving Customers Since 1987 Please Circle #372 On Reader Action Card 030107 http://www.masterwall.com http://www.masterwall.com http://www.masterwall.com

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Walls & Ceilings Architecture/January 2008 Contents Trade News Special Spec Sheet Section Making EIFS Look Easy ICFs Convert Greenbuild '08 The Finish Line Cracking the Code

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