Install weep screeds and casing bead. This construction, which uses 2x wood studs spaced 16 inches o.c., eliminates the need for a Finish Coat Stucco applied to a 1/8" thickness. .. Fasten the netting to the wall, using galvanized nails or … Buy a prepared brown coat stucco mix and add water according to package directions. Apply two layers of grade D building paper or asphalt felt to the plywood siding. The thickness of stucco on a solid substrate is 5/8 or 1/2 inch. Zenith Spacer. Note the continuity of the thermal control layer via overlapping foam layers at the slab-to-wall interface. What is the correct thickness of stucco? Conventional stucco over wood should always be applied as a three-coat system. If water sprinkled on the wall is not readily absorbed, then the surface must be handled differently. It is our opinion that major cause for cracked stucco is improper plywood installation during stucco installation process. Hardcoat stucco is typically a three layer cementitious rendering (scratch coat, brown coat and top coat) applied over a building paper, metal lath and sheathing (Photograph 2). Generally, stucco that is applied directly to solid surfaces is placed in two coats that together total 5/8 inch of thickness. 2. Before applying stucco over wood, you will need to attach a layer of roofing felt to the surface followed by a sheet of wire mesh.Then apply a thin layer of stucco to the wire mesh surface as a base for the final coat. UBC provisions specify 7/8-inch exterior cement plaster over plywood wall sheathing, with 2x wood studs … Kraft paper is factory applied to prevent over spray of stucco. Space the ties as required by masonry courses. Since it is twice as thick as one co… Asphalt felt, then metal lath, then stucco -- that was all. As an insulated stucco assembly, LaHabra Fastwall 100-HE provides a durable exterior with an energy saving layer of continuous insulation. Although I do agree that six inches at least be done. Most all fire-rated assemblies require 7/8-inch and some require a full 1-inch thick cement plaster. The big advantage to three coat is its strength and durability. Install casing bead as a plaster stop at the corners of doors … 1. Local codes do not dictate how the stucco is applied or how far it needs to be above the surface of the ground. Sometimes caulk or stucco patch can be used to hide the joints. The siding is 20 years old and we want to get rid of it. For example, three sides of the house might be plywood, with the front being made of manufactured veneer stone or cedar shingles. Our Drainage Mat. Trowel the 1/8" thick finish coat over the brown coat, starting at the bottom and working to the top of the wall. 1. Fastwall 100-HE is a "High Efficency" Continuous Insulation (CI) stucco assembly with a base thickness between 3/8 to 1/2 in. All these systems apply a single base coat and a top coat with a total thickness of 2/8 to 1/2-inch, compared to 7/8 to 1 inch for traditional three-coat stucco. The additional thickness of stucco on metal base is required to attain the desired hardened cementations properties. The layer of Grade B paper may be applied as aWhen plywood ex-separate sheet or attached to and a part of paperback stucco mesh. Stucco cracks develop for quite a few reasons, as we mentioned above. that stucco cladding be installed in three coats with a total thickness of 21 mm. uniform thickness of stucco finish and reduces the risk of wavy wall surfaces. Lets take a look at each technique as well as the advantage that each has to offer. While there are several parts of the North America where stucco always has a strong presence, there appears to be a general renewed interest in portland cement plaster for building finishes everywhere. The thinner finish weighs from 5 to 6 pounds per square foot, compared to 9 pounds for three-coat, and it is cost-competitive with traditional stucco. The Alberta Building Code (ABC), which is the legislated building code in Alberta, is based on the NBC but also permits two-coat stucco with a total thickness of not less th an 19 mm. (stucco) as an exterior finish over plywood wall sheathing is recognized as a “generic” construction system under provisions in the Uniform Building Code (UBC). that includes a layer of continuous insulation up to 1-1/2 in. Follow with the three-dimensional drainage mat and two more layers of paper or felt. It is applied … Depending upon your particular climate, expansion and contraction of fiber cement product should be considered. 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. For example, one coat stucco is actually a two-step process. Secure stucco mesh to your walls and then apply your layers of stucco for a watertight finish. Simply screw the plywood over the entire window or use clips to install the plywood inside the window frame. Spray Lath is a West Coast product, where stucco is spray applied to the surface of the lath to build up the stucco thickness. Stucco works different in different climates. Use a trowel to dance stucco. Stucco thickness depends on the backup system and on whether or not lath is present. Professional stucco repair contractor can always recognize stucco cracking originated by plywood because of the different crack directions. Fortunately, whether your house has vinyl, brick, or stucco siding, the process of installing plywood over the windows is relatively straightforward. See stucco to fill the gaps in the mesh and apply to a thickness of about 3/8 of an inch thick. Steps. Stucco provides a durable, low maintenance finish that adds lots of character to a house. Do The Job Right Proper installation is important if these desirable results are to be ... (stucco exterior finish) over plywood wall sheathing. Spread a 3/8-inch thick layer of base or scratch coat stucco over metal lath with a rectangular mason's trowel and roughen the surface with the notched edge of the trowel. Place stucco wheelbarrow for each application. Depending on the contamination, you might only need to wash with water. Attach the masonry ties securely through the panels and into the steel or wood framing. Check out our recommended tools right here: https://www.stuccoplastering.com/tools/ Hello, our faithful subscribers and plasterers around the world! Rather than using drywall on the ceiling, stucco installations that go beyond the basic troweled-on layer need plywood backing to hold the metal lath in place. It can be applied with either a one coat or three coat process, but there is some confusion about the methods. 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