His process is to power wash the old stucco (not sand blast or remove the color coat) then apply a new brown coat "with polybond" over the old stucco, and then apply a new color coat. Concrete masonry is stable and less prone to expansion and contraction and other movements that may crack the stucco. Step 3. You need to layer it with a house wrap or other waterproof building paper and then with self-furring metal lath. Apply a 1/8 inch thick coating of QUIKRETE Finish Coat Stucco in the preferred application working from the bottom of the wall to the top. Sealant Use your trowel to apply a 1/4" layer of stucco to the surface. Step 4 - Apply the Mesh. Stucco a Masonry or Concrete Wall 1. Your other option, applying stucco, may take a little practice to get the right surface texture and finish. To repair other types of siding, such as vinyl siding, the damaged panel is replaced by an intact panel. Stucco is a plaster-like mixture commonly made up of cement, sand, water and lime that is commonly used to coat and finish walls and ceilings. Stucco Siding Options. The application is done by hand and rubbed in a circular motion to achieve the worm look. Because stucco is worked by hand, it can be textured in any number of ways. However there are differences, such as : Stucco tends to be thicker than render (20mm against 10-12mm). The terms 'Render' and 'Stucco' are almost interchangeable; Render generally being UK terminology and Stucco, American. She should apply this final coat with a flat-surfaced finishing trowel and create the desired texture pattern as she applies the stucco. Lee has over two decades of hands-on experience remodeling, fixing, and improving homes, and has been providing home improvement advice for over 12 years. There are two main types of material used in stucco finishes, synthetic (or acrylic) stucco and traditional stucco. 9. Allow this coat to dry for about an hour, then use your plasterer's rake to etch lines all the way across the surface, approximately 1/8" deep. Faux Stucco Wall Finish. Stucco or render can either be ‘natural’ or ‘artificial’ and by the end of the Regency there were a number of renders available. This lath provides the grip for the scratch coat to hang onto. Step 4 - Apply the Mesh. To achieve different effects in the final finish, this coat can be partially applied. Stucco is the name given to a thin render applied to the external walls of a building in order to disguise the underlying masonry and give the appearance of stone, but at a fraction of the cost. The three-coat system is the best way for a homeowner to apply stucco to masonry or brick siding. temperatures of 50 to 60ºF (10–16ºC). If applying it to bricks or concrete, the worker must first brush a concrete bonding agent onto the surface. Step 2. If she has to stop in the middle of creating the scratches on the scratch coat, it will be obvious where the lines stop and start again across the wall. Then she applies the bonding agent followed by a basecoat, or scratch coat, of stucco. Taking the project one wall at a time ensures the homeowner won’t need to stop halfway through and run the risk of creating an uneven finish. Even seams that appear to be well-sealed may eventually open up. In most cases, you can paint your newly installed stucco after a short waiting period and after using a specialty primer that is suited for the elevated Ph levels of cement based stucco finishes. However there are differences, such as : Stucco tends to be thicker than render (20mm against 10-12mm). Cleaning involves washing down the wall and, once the wall dries, applying a bonding agent to it. Allow this coat to dry overnight. Stucco itself is a cement-type mixture made of sand, Portland cement, lime, and water. The second coat, called the brown, evens out the surface, and the last coat is where they’ll add the finish. We used this mostly when we are applying stucco to a smooth surface. If you have an acrylic stucco finish that you are painting, then this will not apply to you and you can go ahead and paint after the product is fully cured (usually between 2-4 days). Step 5 - Apply the Mortar. 8. The three-coat system is the best way for a homeowner to apply stucco to masonry or brick siding. Step 3. Stucco can be damaged quite easily. Stucco, roughly textured cement or plaster, is typically found on exterior walls, especially in desert areas in the Southwest. One prime place to install a stucco finish is over concrete masonry. This is applied with a hawk and trowel usually (depending on the finish) and can be customized a number of different ways using several different techniques. Concrete masonry is stable and less prone to expansion and contraction and other movements that may crack the stucco. A hopper gun will allow you to apply stucco to any wall quicker and more efficiently than any other method. After applying the bonding agent, while it is still not completely dry, embed the fiberglass mesh into the cement board. Apply a coat of concrete bonding agent to the concrete surface using a paintbrush. Knockdown textures, which are common with drywall, are very similar to stucco in that the mud is applied with a sprayer machine and then smoothed over with a trowel. To apply stucco to your existing brick, block, or concrete wall, first, brush a concrete bonding agent onto the wall,... 2. Make sure you apply the mix carefully, covering entire surface with a thick coat. It is cheaper and easier to work with than traditional cement stucco, but is not without its pitfalls. You can paint stucco walls. Once applied, the homeowner can step back to examine her work and adjust the texture as necessary to create a smoother or more choppy look depending on her preference. As the scratch coat dries, the homeowner should mist it occasionally to keep it from drying too fast and cracking. Allow the coating to harden for a further 48 hours. While it is true that stucco can last for 50 years or more, it does require proper maintenance to meet that lifespan. Get it free when you sign up for our newsletter. If you have an acrylic stucco finish that you are painting, then this will not apply to you and you can go ahead and paint after the product is fully cured (usually between 2-4 days). 9. After the scratch coat, apply a brown coat to provide a smooth surface for the subsequent stucco finish. Remember to apply a scratch coat of stucco before applying the final layer. After applying the bonding agent, while it is still not completely dry, embed the fiberglass mesh into the cement board. Use an angle grinder to remove sharp edges or heavy points on the wall. Sto offers stucco, limestone, various other textures to cover the EIFS. At the same time, stucco can be painted with ordinary exterior house paint. For demonstration purposes, this video shows the step-by-step application of Sahara Finish. You can apply stucco over almost any surface, including masonry, wood, or siding. While stucco materials are inexpensive, the total project cost may still be high because much of the cost of a stucco finish is dedicated to time-intensive labor. When it dries, it is rock hard. Then she applies the bonding agent followed by a basecoat, or scratch coat, of stucco. Apply the base coat stucco using a square trowel held at a 45 degree angle. The great thing about applying stucco to brick is that much of the work is done for you—the masonry base and scoring is automatically already done! The goal is to create one long, continuous set of lines from one edge of the wall to the other. This siding is called stucco finish. Mix stucco according to package directions in a bucket. Step 2. Over this, the workmen apply a second, smooth layer with breaks in it that let the first textured layer peek through—these are the “cat faces” that give the texture its name. The stucco takes another two to three days to dry and needs misting occasionally to slow the drying process and strengthen the stucco. 8. Step 3. Apply a ¼ to ½ inch thick layer using the plastering trowel and hawk. Block, brick and wood require two scratch coats prior to the third smooth layer. Coat the first stucco layer to a thickness of 1/4 to 1/2 inch. Let it slightly harden. The stucco finish wipes clean easily and is resistant to stains while steel legs bolster the natural-industrial look. While stucco finish can be applied to a wood-sheathed home, additional reinforcement is needed. It is done in either fine, medium, or coarse finishes. Load stucco on a hawk and then take it on trowel for application. To apply stucco to masonry, the homeowner should first clean the wall. House exteriors are composed of many layers that work in conjunction with each other. Stucco is a material used for finishing exterior walls and surfaces. A scratch coat is a base layer of cementitious material that is literally scratched horizontally with a comb-like tool. When it dries, it is rock hard. Stucco is considered a thin finish coat, the outermost layer that is visible and can be painted. Finish Coating Apply the finish coat directly over the base coat in continuous application. Stucco is often tinted to add color, rather than painted, ensuring colorfastness. It provides a light-weight yet durable finish and can be easily troweled on the wall surface and patterned if so desired. He says this is even better then stripping the old color coat because it will be "stronger". Allow the coating to harden slightly and go over the surface with a plasterer's comb to create a series of scratches over the stucco and reduce the layer slightly to about 1/8 inch in thickness. There are two main types of material used in stucco finishes, synthetic (or acrylic) stucco and traditional stucco. Additional Helpful Tips. If applying stucco to wood, workers must put a felt covering over the wood so that the stucco stays attached. This is where you blend in the texture of the new stucco to the old stucco, if necessary, or … This coat provides a strong, flat surface for the finishing coat of stucco to adhere to. But there is another form of siding that has been used on houses for centuries and which still continues to serve houses well. This helps hold the stucco to the wall by giving it something to cling to. Finally, she adds the finishing coat to create the rough texture characteristic of stucco. 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