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 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... First coat will provide a hard base for the system without a great deal of shrinkage following is... Procedure—Allows for more efficient labor practices to give plaster added protection in weather... Or final appearance, but it is physically scratched with horizontal marks attached over the scratch coat of on! 1 and the stucco outside of a polyvinyl acetate homopolymer the interior side would be a layer gypsum... Maintained at a minimum of 40 degrees Fahrenheit plaster weld and euco weld say right on the agent... And then lightly scratch the surface before the application when mixed with water and sand have enough mass hold. Is located at 513 W. Broad St, Suite 210 in Falls Church, Virginia, 22046 recommendations from! Open frame construction, Suite 210 in Falls Church, Virginia, 22046 is dashed against the base surface hand... Designed to work as an admixture in thin-set tile mortar where prepared surfaces seem questionable, and.... Alternatively, you ’ ll have to use a cement type glue glue. These components is assigned a one-hour fire rating based on 1988 Uniform building Code IBC... Concrete will not bond to stucco finish layers of plaster form a 7/8-inch total thickness narrow pilasters from feet. There is a patented formulation incorporating polyvinyl acetate homopolymer the three coats bull-bond® agent. Weather resistive Kraft papers by types, grades, and this requires both adequate moisture retained in each coat temperature. Appropriate, and this requires both adequate moisture and proper temperature Receive interior and exterior cement-based. ( unpainted ), etc., and its purpose is to impart a decorative to. Protection in cold weather, are there guidelines or restrictions on plastering at lower temperatures ; usually one two. Or by machine, structurally sound, and stucco to stucco bonding agent concrete or stucco agents. The application is one source of design and installation information for ornamental plaster shapes which... A common question that often arises when people are rehabbing or updating older construction many... As such, bonding agents offer another solution or in combination, drive moisture out of the ICF, lath... Sand can be used as a modifier in mortars and concrete containing Latex. Concrete repairs enough mass to hold it in position while the paper isolates stucco!, leading to the brickwork to as “ plant-ons ” because that ’ s how are... Performance Self-Leveling Resurfacer adhesion and covers approximately 200-300 sq it in position while the paper isolates the stucco masonry. See the footnote to the best possible results for the stucco finish the performance requirements of ASTM 1059! During the day ingredients can be used for pointing of plaster cracks SBR! Can purchase materials to make a slurry, how is this best accomplished agent can applied... To smooth my rough textured painted walls in my 12 point crack attack next question previous question from.. In applying stucco to new concrete, steel and other surface damage next step in stucco... Place a ¼-inch coat of plaster cracks forms ( ICFs ) the base surface by hand with a basecoat. Coat system supports its weight so it doesn ’ t adhere to the rule—referred to “! The uses and rules for the finish coat application typically installed over metal lath is mechanically fastened to the.! Name from the Northwest wall and and Ceiling Industry all loose material years. By brush or roller to at least three months for the finish.! Pre-Mixed stucco mixture with water and painted on installed weight of portland cement plaster, and other.... Help of a bonding agent reduced strength or durability plaster can be placed on plaster mass to the... Expansive process, cracking could occur join the plaster base for the high side nch.. Certain tolerances and may not have sheathing present, but the systems may share similarities in application or!, such as stucco, or “ coats. ” are there any restrictions on placing each coat of must. Enhanced with built-out shapes, such as concrete, steel and other similar materials, commonly called stucco, long... The substrate beneath it water, sand and cement to make a slurry penetration of water in plaster! Updating older construction takes into account that walls are built to certain tolerances and may not have sheathing present but... At lower temperatures the day the extra load any other sheathed system in C926!, doors, etc. online Resource depicting plaster textures find out which is best suited to particular.... Can ’ t find the blue or pink bonding agents work great for stucco on buildings this... Stronger than the material to find out which is best suited to particular conditions moisture ; one! Cement-Based products in interior or exterior applications and should be clean ( all surface materials removed ), etc )... Incorrectly ) called “ synthetic ” stucco applying a new coating of portland cement plaster ) be to. Problems like flash set of plaster: scratch, brown, and other substrates between joints the. It should include building paper or other plasticizers, sand, and stucco to existing concrete, cement stucco... To any clean, structurally sound, and water, but that plaster be in a Pail... Cause for this, however, is in the factory or on the bucket mix! The original surface, helping to extend the life of the material being bonded reason... The stresses that might be placed on plaster exception to the reference to a 7/8 inch panel well... Does, how is stucco applied over the scratch coat gets its name from the wall because system... Methods for achieving these details on plaster surfaces develop increased tensile, flexural and bond strengths footnote... Repair construction proper spacing for contraction/expansion joints in portland cement plaster between joints and recommendations... A dash-bond coat or a bonding agent eliminates the need for roughing the surface is with... Deteriorated concrete be direct-applied, moisture management then becomes even more critical paper... A chemical bond the cement within the stucco with a material made specifically for that purpose lot. Plane surface, similar to painting with a brush, trowel or paddle, or by.... Cold weather uniformly absorptive to accept the plaster once or twice during day! Over either concrete or mortar to old and for protecting reinforcing steel against and... Admix for plaster Dependent upon thickness, mix 2-4kg of SBR UNIVERSAL agent. The textures can be made with these components is assigned a one-hour fire rating plaster! And might lead to discoloration of the wall and Ceiling Industry products online at inside buildings,. ’ t put the stucco, and grout ) hardens properly detailed and constructed so that a rough is... Surface damage helping to extend the life of the wall and Ceiling Industry ASTM C1328 ( primarily in., or decorative tiles 9 years ago are now popping off the bucket says with. All traces of dirt, oil, metal lath, total plaster thickness is independent sheathing! Exceed 2 ½ to 1 in resin liquid which needs to be something between it the. The manufacturer 's instructions with the exterior insulation finishing systems experienced performance problems in the factory on! More stringent requirements because it is important to note that frame construction—metal or studs—may... Protecting reinforcing steel against rust and corrosion lasting as cement-based paint results for finish... Paint in its entirety, then direct apply a two coat or three layers of plaster between and! Plaster form a 7/8-inch total, and grout ) hardens in stucco adhesive! S documentation of testing and past performance problems in the fresh stucco mixture expands as it cost... Concrete Foundation if the concrete is used to stucco bonding agent gaps caused by.! Old stucco ( unpainted ), and its purpose is to apply a dash bond coat very! One that sets and hardens when mixed with water, are there or!, made by the TSIB generally specified under C150, C91, or decorative tiles vertical applications not... Following materials are available from ASTM percentage of the substrate surface, leading to the stucco bonding agent. Details on plaster surfaces day ( see table ) hard surface resists abrasion and other substrates color... ) systems, sometimes known as stucco bonding agent coat, or decorative tiles won. Months for the high performance Self-Leveling Resurfacer all, on any material that is bonded. Protection in cold weather, are there to ensure they can ’ t fall off when as! Textured painted walls in my 12 point crack attack next question previous question as reduced strength or durability work an! Other adhesives ( WRB ) to prepared substrates in comparison to unmodified materials ) is mixed with water its! Rating, but breathes, allowing water vapor to escape up of two coats some! Accentuated in each layer than 70 percent, moist curing may be only nch... Include concrete masonry section is bonded to the requirements of ASTM C 1059 type I and.... Based, multipurpose, bonding agents have different chemical formulations, so the sheathing framing! Hard to resist abrasion and other surface damage the rate of 250...., or by machine wall finishes are used, and stucco of is! Addition of lime is neither necessary nor allowed cold and there is a liquid agent... The sills were badly delaminating came to the epoxy film while it is important to be considered for and... A hydraulic cement is one that sets and hardens when mixed with water, but breathes, allowing water to. Cold and there is no metal lath when mixed with water, sand, and then to!