BONDING SLURRY FOR REPAIR OF OVERLAY WORK 1. Select stucco colors and textures. can get away without sandblasting the old stucco and just applying the Tuf-Link Bonding Agent can be used interior or exterior, above and below grade. Stucco finish will not bond to stucco finish without an acrylic additive or bonding agent. These scratches create a key; for the next coat to grab onto and a shelf for moisture to aid in curing of the brown coat. Curing of colored finishes is typically done by wetting the base coat to provide curing moisture from behind the finish and ensuring that the surface is shielded from drying. The association is is located at 513 W. Broad St, Suite 210 in Falls Church, Virginia, 22046. The use of TARGET Bonding Agent in concretes and shotcretes also gives significant improvements in resistance to penetration by chlorides and de-icing salts. ft. per Gal. me here. The purpose of the first base coat, the scratch coat, is to embed the metal lath and provide a base for the brown coat. We are often asked if stucco and plaster are the same thing, and if plaster and exterior insulation finishing systems (EIFS) are the same thing. This specification differentiates weather resistive Kraft papers by types, grades, and styles. A painted surface will not typically absorb water and, as such, is a substrate to which stucco will not readily bond—at least not uniformly. You can look to your local Yellow Pages, The Blue Book of Construction, or at your local library to identify contractors in your area. However, in an insulating concrete forms-stucco installation, the paper’s primary function is to serve as a bond breaker and not as a weather resistant barrier between stucco and insulation, which have significantly different rates of expansion and contraction due to changes in temperature and moisture condition. Whitecap Contractor Strength is a poly vinyl acetate bonding agent used for adhesion between portland cement surfaces. Item # 10428 Model # 990201. The Technical Service Information Bureau (TSIB) is a trade group in southern California serving the needs of the wall and ceiling industry regarding lath, plaster, and drywall. Compare. Plaster is placed in two or three layers, or “coats.” Are there guidelines or restrictions on placing each successive coat? Note that frame construction—metal or wood studs—may or may not have sheathing present, but that plaster thickness is independent of sheathing. See www.astm.org for information about ordering a copy of ASTM C926, which contains the recommendations for both vertical and horizontal plaster thickness over metal plaster bases and solid plaster bases. Second, Stucco finishes are popular across North America. It is sometimes called “traditional stucco.” Stucco is a somewhat colloquial term for portland cement plaster, and some people consider it to refer to an exterior, not interior, finish. © 2019 Portland Cement Association. popped off 4 years later. We use a particular kind in many of our videos, but you can use any of the ones you can get your hands on. Portland cement-based paints are very compatible with stucco because they are made of the same material. They have an excellent online resource depicting plaster textures. We are often asked if stucco and plaster are the same thing, and if plaster and exterior insulation finishing systems (EIFS)are the same thing. The acrylic mortar mix can be troweled on or even painted on with a brush, and Proportions are clearly spelled out in ASTM C926, Standard Specification for Application of Portland Cement-Based Plaster. The shapes must be securely attached to the wall. While the polymer based skin repels water very effectively, problems arise when moisture gets behind the skin—typically via window, door, or other penetrations—and is trapped inside the wall. Where white or colored plaster mixes are used, they often are applied only as the finish coat. Stir the mixture thoroughly using a drill with a paddle bit. etc. As the foam itself has no structural strength, the mesh and basecoat together provide an impact-resistant surface to the shape, protecting it in service. The Stucco Resource Guide from the Northwest Wall and Ceiling Bureau is one source of design and installation information for ornamental plaster shapes. This exception to the rule—referred to as a double-up or double-back procedure—allows for more efficient labor practices. This resulted in a wide sloping cement sill on the first floor. Used to bond new portland cement-based and gypsum plaster products to existing properly prepared cement-based substrates. It will fail. Older concrete or masonry walls may have bond-inhibiting characteristics, in the form of paint, sealer, some other coating, or dirt on the surface. I just redid a patch (for free)  I did Bull-Bond® BONDING AGENT eliminates the need for mechanical devices to join the plaster coat. Integral bonding agents should be used only after review of the manufacturer’s documentation of testing and past performance. The shape is then finished like EIFS: covered with a basecoat and mesh, then a finish coat. This coat is known as the scratch coat because, once applied, the homeowner uses a scratch coat rake to create 1/8 of an inch (3 mm) deep, evenly spaced lines running horizontally along the wall. years In extreme conditions, sun and wind breaks can be used to provide extra protection from the elements. done While these materials may be more rugged than paper—and therefore less prone to damage during installation—a single layer is still not adequate according to many industry professionals. Stucco can be painted. For best performance, the temperature of newly applied stucco should be maintained at a minimum of 40 degrees Fahrenheit. No Mexico. This cement rich slurry is dashed against the base surface by hand with a brush, trowel or paddle, or by machine. pools. On the interior side would be a layer of gypsum board. QUIKRETE Concrete Bonding Adhesive is also used as the required primer for the High Performance Self-Leveling Resurfacer. Portland cement plaster has high impact resistance and sheds water, but breathes, allowing water vapor to escape. Therefore, best practice indicates isolating the two materials from each other to allow independent movement and reduce stresses that might otherwise lead to cracking in the plaster layer. Sand can be heated over fire in a pipe, and water can be heated in metal drums. When I was in Mexico for repair and renovation work over either concrete or mortar to concrete slabs with failure... 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