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. The minimum thickness over framed walls is 3/4-inch. 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. Professional stucco repair contractor can always recognize stucco cracking originated by plywood because of the different crack directions. Attach the masonry ties securely through the panels and into the steel or wood framing. Secure stucco mesh to your walls and then apply your layers of stucco for a watertight finish. uniform thickness of stucco finish and reduces the risk of wavy wall surfaces. Space the ties as required by masonry courses. As with the brown coat, mix only enough stucco that can be applied in 1 hour and complete the entire wall or major section in one session to reduce possible color variations. It can be applied with either a one coat or three coat process, but there is some confusion about the methods. Lets take a look at each technique as well as the advantage that each has to offer. Most all fire-rated assemblies require 7/8-inch and some require a full 1-inch thick cement plaster. You can use caulk or stucco patch, or epoxy on the joints. Generally, stucco that is applied directly to solid surfaces is placed in two coats that together total 5/8 inch of thickness. 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. 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). .. See stucco to fill the gaps in the mesh and apply to a thickness of about 3/8 of an inch thick. J. Plywood Siding K. Vinyl Siding L. Fiber Cement Siding M. Metal Siding Brick Cavity Wall Masonry or stone veneer can be applied over DensGlass Sheathing just as it would be over any other type of sheathing. Plywood is a dimensionally stable wood, so it resists major expansion, contraction, warping, and swelling. I have plywood siding with vertical battens attached to make it look like board & batten. Plywood siding is available in large sheets of 8 feet long or longer, so installation goes faster. Apply two layers of grade D building paper or asphalt felt to the plywood siding. The additional thickness of stucco on metal base is required to attain the desired hardened cementations properties. UBC provisions specify 7/8-inch exterior cement plaster over plywood wall sheathing, with 2x wood studs … Spray Lath is a West Coast product, where stucco is spray applied to the surface of the lath to build up the stucco thickness. Then feel free to install vertical strapping and stucco. that includes a layer of continuous insulation up to 1-1/2 in. Step 3: Install Galvanized Lath or Netting. My only warning using this product is properly hiding the seams (where two or more edges of Hardie panel meet or join. Spread the stucco over the wall with the help of smooth trowel. The siding is 20 years old and we want to get rid of it. Always refer to the fire-rated assembly test before making an assumption. Method 1 of 2: Since it is twice as thick as one co… 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. For example, one coat stucco is actually a two-step process. For many decades in California, stucco was installed directly over the studs, without any sheathing whatsoever. 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