How thick is a stucco system?
The correct thickness is then 5/8 inch. Two-coat applications are only for use over solid plaster bases without metal lath. For unit masonry, that thickness is ½ inch. For cast-in-place or precast concrete, the thickness for two-coat work is 3/8 inch.
What are the 3 layers of stucco?
What is Three Coat Stucco? Three coat is the original stucco process, consisting of paper and wire, a scratch coat, a brown coat, and a finish, or “top” coat. In industry terms — lath, scratch and brown.
How thick is stucco or EIFS?
The entire thickness of the EIFS system is typically, approximately 1/8″to 1/4″, plus the thickness of the insulation board, which will vary, based upon desired R-value (insulation rating).
How thick is stucco hardcoat?
Quality stucco siding systems are three or more coats of Portland Cement applied over a lath system that helps attach the plaster to the house. The resulting plaster siding system should be 3/4 of an inch or more in thickness. There are also less expensive and thinner one and two coat stucco systems.
How can you tell the difference between stucco and EIFS?
The easiest way to identify synthetic stucco (EIFS) is by touching the material with your bare hand. When you touch the wall where the stucco is installed, it will feel like plastic. You can also knock gently on the wall. If it sounds hollow and thin, you have EIFS on your home.
How thick can EIFS be?
9. What is the maximum foam thickness allowed with an EIF system? Building codes generally limit EPS thickness to 4 inches.
Is stucco or EIFS better?
The fiberglass layer provides more durability, even against hard blows from weather. EIFS is notably lighter than traditional stucco, however. It is 80-percent less heavy than stucco, but it has a higher R-value, coming in between 4 and 5.6, which is notably higher than the 0.20 R-value of regular stucco.
How thick is Scratchcoat?
3/8″ thick
The scratch coat should be 3/8″ thick. Force it through the wire mesh so that it fills the ¼” gap between the mesh and wall completely. 3. Smooth the scratch coat with the trowel.
How are the layers of three coat stucco applied?
As its name suggests, three coat stucco is applied in three layers: 3/8-inch thick scratch coat, 3/8-inch thick brown coat, and approximate 1/8-inch thick finish coat. The approximately 7/8-inch three coat system is applied over an approved weather-resistive barrier and metal lath either by hand using a trowel or by machine application.
What should the thickness of stucco be over a CMU wall?
Stucco Thickness Over Block / CMU Walls is ½ inch If your house or exposed basement wall is a masonry wall, sometimes referred to as concrete or cinder block, or CMU (concrete masonry unit) the thickness required is not 7/8 inch but is usually 1/2 inch; consisting of a 3/8 scratch coat and then a 1/8 inch finish coat over the scratch coat.
What’s the difference between scratch coat and brown coat stucco?
Next comes the scratch coat, which is a base layer of field-mixed Portland cement, sand, lime, and water with a series of horizontal lines scratched into it. Then comes the brown coat. This layer is applied with a darby, or long trowel, to make sure the cement is applied evenly.
What kind of finish is used on stucco?
Over the weather barrier will be expanded or woven wire lath, and then a portland cement scratch and brown coat. The finish can be a variety of products used individually – or in combination – to provide color and texture to the surface. What is a one-coat system? One-coat stucco is a proprietary blend of cements and fibers.