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STUCCOStucco application is a three-coat process, installed over water-resistant building paper and metal lath. The first coat is called the “scratch coat”, and gets its name from being scratched with a tool to make its surface rough enough for the “brown coat” to adhere. Secondly, this brown coat is then worked into the desired shape of the finished wall, including architectural ledges, recesses and shadow lines. These scratch and brown coats are a carefully crafted mixture of sand, lime, portland cement, and water. The third and last coat is called the “finish coat” and is usually blended from screened sand, lime, white cement, pigment and water, and can be worked into a variety of textures. Application may be applied either by hand or machine to exterior and interior wall surfaces. It may be applied directly to concrete walls, or it can be applied to metal lath attached to frame construction, solid masonry or concrete construction. A vapor-permeable, water-resistant building paper separates the plaster and lath from water-sensitive sheathing or framing. When the metal lath is attached to the frame, the lath is about ¼ inch away from the sheathing, frame, or solid base wall. This permits the cement to penetrate lath openings and surround the metal strands, embedding them. As the scratch coat plaster hardens, the lath and plaster become rigidly interlocked, with the lath essentially performing as reinforcement. Encasement of the metal also protects the metal lath against corrosion. When applied to metal lath, three coats of plaster form a 7/8” total thickness. Plaster has high impact resistance and sheds water, but breathes, allowing water vapor to escape. It is a proven system that works in all climates. Stucco provides a tough exterior resistance to attack – from lawn equipment to grocery carts. That toughness is beautifully complemented by a variety of colors and textures available. The colors are tinted with natural oxide pigments. TBP uses a number of quality vendors to deliver a quality product to your home. LaHabra is our primary supplier of color, click on the link to see the variety of colors available from LaHabra. You will find that stucco will give your project the following qualities:
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