It is highly water resistant and very structurally sound, consisting of about an inch thick layer of cement on the exterior of the home. 3-Coat Stucco. bag of Portland cement and 25lb. Score Horizontally. It is important to follow the manufacturers' instructions for 1) the type of coating to apply, 2) the timing between coats, and 3) the finished mil thicknesses when the coatings are dry. Three-Coat Stucco The three coats involve (1) lath, (2) scratch, and (3) brown. Commercial Cement Plaster (CCP) 5. . U-STUCCO can be applied in a single pass of up to 1 inch to nearly any substrate, including plywood, OSB, gypsum, masonry, AAC, steel and ICF systems. Three coat stucco is recognized by IBC/IRC building codes and remains one of the most popular exterior cladding choices for both residential, multi-family, and commercial projects. The three-coat stucco system total thickness is approximately in. 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 three-coat stucco system total thickness is approximately in. The third coat, the finish coat, is often pigmented for color and applied by smooth trowel, hand-textured, floated to a sand finish, or sprayed. Impact and fire . This involves the following parts: A Cement Coat. base coat stucco extended board life is a portland cement-based stucco designed to be used as the scratch and/or brown coat in a 3-coat stucco application, or the first coat in a 2-coat application. The three-coat stucco system total thickness is approximately in. The calculator will indicate the number of 80 lb bags of QUIKRETE Base Coat Stucco and Finish Coat Stucco you will need to construct your stucco wall using a traditional 3 coat or 2 coat application process. Made of contractor-grade PVC, trims are made for use with three-coat stucco finishes. It has a measuring range of 13 to 1000 microns (0.5 to 40 mils) and is ideal for measuring the total thickness of the paint system. 3 Coat Stucco. How thick is a 3 coat stucco system? It uses the Styrofoam in place of a "scratch coat" that is typical in a three coat stucco system. the third coat is just thin finish coat. 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 u0001 7/8 to 1 inch for traditional three-coat stucco. One Coat Stucco combines the scratch and brown coat into a single application of 3/8" to 1/2" thick. 3 layers are necessary for all but a . 1. Advantages: The multi-layer system provides a . I wouldn't use rigid foam that is more than an inch thick. (3.2 mm) Thick for Use With the Outsulation LCMD Systems 1-5 or the Outsulation RMD System . (22 mm), and weighs 10-12 lb. The correct thickness is then 5/8 inch. View More. On the other side of the coin, there are only two obvious drawbacks: it takes longer to complete and it's more expensive. August 2, 2017. Restoration. The PosiTector 200 B1 is ready to measure most drywall coating applications right-out-of-the-box. How thick is a 3 coat stucco system? The displayed result is the total thickness of the coating system (primer + paint layers). A 1/4 scratch coat and 1/2 brown coat make up the base coat, with a finish coat on the . Mix and apply another 3/8 inch layer of base coat stucco directly to the scratch coat. Could not find in code please indicate what paragraph and page of The cement used in the one coat system is about 3/8 of an inch thick and is reinforced with fiberglass particles. It requires time to cure, which means it can be a lengthy process. Advantages of Stucco. Stucco thickness. Before applying each new coat, wet surface with clean water, we recommend this 3-coat application: 1. frame and Plywood base: Applied over the lath at a 3/8" thickness. Step 14 Screed the surface using a straight board or darby to 3/8 inch thickness and fill any surface voids with additional base coat. . Types of Stucco. (22 mm), and weighs 10-12 lb. B. Curing: Moist cure base coat for 48 hours minimum. Additional links for OSB: (22 mm), and weighs 10-12 lb. 2) The Brown Coat also should have a minimum 3/8" thickness. Due to its thickness, three-coat stucco has more strength to withstand wear and tear. . The stucco contractor is supposed to do this, but you can keep everyone motivated with random, surprise thickness . The 3 coats needed for a proper stucco installation includes, 1) The Scratch Coat (raked horizontally) with a minimum 3/8" thickness. How thick is a 3 coat stucco system? The brown coat is the second layer of stucco that is applied over the scratch coat. How thick is a 3 coat stucco system? Three-coat stucco may take weeks to apply. This acts as the base coat . The three-coat stucco system total thickness is approximately in. Three Coat Stucco - The biggest plus for this original way of doing things is the strength and durability of what you're putting up. Three layers is the unique stucco course of, consisting of paper and wire, a scratch layer, a brown layer and a end or "high layer" . The wall should be properly aligned to eliminate large variations in stucco thickness and plane tolerances as define in ACI 530 Chapter 3. . . Especially, if you also do the "push test" and the wall has a . 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. Three-Coat Stucco Over Foam Exteriors. Please, feel free to check out our recommended tools on the Amazon website below.https://www.stuccoplastering.com/tools/Kirk Giordano Plastering Inc.MORE ABO. Specifications. Without a mesh lath in place, the foundation must be plaster or concrete of some kind. of mason lime. For unit masonry, that thickness is inch. Comes in 4 by 8 sheets typically. Posted on: April 09, 2013. Basically the three coat system consists of paper and wire, a scratch coat, a brown coat and a finish, or "top . One Coat Stucco assemblies are code-approved proprietary systems that must be specified and installed per the manufacturer's . (3.2 mm) Thick for Use With the Outsulation LCMD Systems 1-5 or the Outsulation RMD System . Is usually around 3/8-5/8 thick for most stucco applications (unless noted by building plans, or county/state requirements) Can be found at most large home improvement stores and is readily available. Sythetic Stucco) is an exterior wall-cladding system comprised of insulation boards attached to a substrate, covered with a reinforced base coat, and a textured protective finish coat. The thickness ranges from 3/8 to 5/8. Over a basic frame construction, the first layer will be a mesh lath. Formula: 18 shovels of clean, one 94 lb. Following the brown, the top coat is applied, whether the stucco is synthetic or traditional stucco. The three-coat stucco system total thickness is approximately in. A range of LaHabra finish options can be applied over the stucco base with varying . The two drawbacks are time and cost. This assembly utilizes Fiber-47 FastWall Scratch & Brown. Three-coat systems consist of: first coat = 1/4 inch thick, second coat = 1/4 inch thick, and finish coat = 1/8 inch thick over both masonry and cast concrete. They were visualizing lathe staples. if you want it to match what you already have, do two coats". The color coat is the third and final layer of stucco that is applied over the brown coat. approximately in.The third coat, the finish coat, is often pigmented for color and applied by smooth trowel, hand-textured, floated to a sand finish, or sprayed. Superior Stucco Uniwall is a One-coat stucco base coat that is a factory- prepared mixture of Type I-II Portland cement, chopped Type E glass or polypropylene fibers and proprietary ingredients, field mixed with sand, & water (optional admix may be added). No matter what foundation you'll be working with, it's important to note that stucco thickness is . (29 lb per fastener) for PIC and mineral fiber insulation at a thickness of 4 in. (22 mm), and weighs 10-12 lb. 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. The total combined basecoat depth should be 3/4 of an inch thick. Since it is twice as thick as one coat it's better able to hold up to wear and tear. As a stucco assembly, FastWall 300 Assembly provides a durable exterior and a unique and refined look. 3 layers are necessary for all but a plaster base. As a result, the extra materials and labor make three-coat more expensive than the one coat option. Stucco contractor: "what you have on your building now is two coats. The three-coat stucco system total thickness is approximately in. Can stucco be 3 thick? The scratch coat is the first layer of stucco that is applied to the wall. When installed to meet the building code, these systems are a minimum of 7/8 inch thick "One" or "Two-Coat", proprietary systems are also available (must be approved to meet code). 3 coats or layers with a total thickness of 3/4 of an inch or more (i.e., scratch coat, brown coat, and finish coat) Vulnerable to excessive cracking; Details are well developed. If you get traditional stucco that is going to be extra heavy, then chances are you're going to need a 3-Coat stucco. (All yields are approximate and do not allow for uneven application thickness, waste, etc.) If it is over an inch, especially 1 inch to 4 inches, then it will normally be a EFIS synthetic stucco wall. STUCCO REPAIR PROS 7643 Gate Parkway Suite 104 #501 . When required by ASTM C 926, Section 5.2.2; an exterior bonding agent, conforming to ASTM C 932, shall be used on all masonry surfaces. It's considerably thicker and is naturally better protection against wear and tear. Step 15 Float the surface uniformly once the stucco has . The Northwest Walls and Ceiling Bureau Stucco Resource Guide (available here) is a great resource for more information. CCP 4 enchances CCP1, 2 or 3 systems by adding a fiberlass reinforcing mesh and a Genesis leveling coat to the surface of the stucco to improve impact resistance and performance. Share on Facebook; Share on Twitter; . This detail shows a three coat Portland cement stucco assembly applied over self-furring lath with two layers of weather resistive barrier (WRB) behind the lath. The information you need to make sure the right paint is applied correctly will be found on the paint manufacturers' website. Let the stucco cure for 24 to 48 hours, misting as needed to keep it moist. Three-coat work can also be specified for solid plaster bases without metal lath. Stucco thickness depends on the backup system and on whether or not lath is present. Commercial Cement Plaster (CCP) 5. . The third coat, the finish coat, is often pigmented for color and applied by smooth trowel, hand-textured, floated to a sand finish, or sprayed. U-STUCCO's simple application process greatly reduces time and labor expenses and renders traditional 3-coat application obsolete. (22 mm), and weighs 10-12 lb. Coverage is approximately 92-105 square feet at 3/8 inch thickness when mixed with 200-240 pounds of sand . An Exterior Insulation and Finish System ( a.k.a. 3 coats for metal plaster base minimum thickness 7/8 inch stucco. They are concerned about the weight 3 coat stucco hanging 1.5 away from the studs. . The term One Coat Stucco refers to a blend of Portland cement, sand, fibers, special proprietary chemicals and water. Let the brown coat stiffen for a short time, and then float the surface with a sponge masonry float to smooth it. What are the drawbacks of choosing three-coat stucco? This method speeds up the three coat stucco process by combining the scratch and brown coat into a single application of 3/8 to 1/2 thick. Click here to view with 7/8 Stucco Finish. One-Coat Stucco is applied as a single base coat 3/8-inch to 1/2-inch thick followed by a . 3/8 inch total thickness - or thicker if required by a fire resistance rated or STC rated assembly and a maximum in accordance with ASTM C926. However, other types can also have 1-Coat options. The structural backup is concrete masonry, with rigid insulation between Z-channel furring. Contractor is open to trying nails, if I am confident. In ASTM C926, the Standard Specification for Application of Portland Cement-Based Plaster, thicknesses are provided for scratch, brown, and finish coats. Advertisement. 2. If you are able to measure the thickness of the stucco at the bottom area of a stucco wall and it is 7/8 of an inch, then it is usually a traditional stucco wall. Finish Coat Stucco applied to a 1/8" thickness. before the three coat system came out in the 1980s, they used to do two coats. Applying the Stucco First or Scratch Coat The first, or "scratch," coat, which forms the base for the next two coats, should completely encase the reinforcement. This is a long trowel that is used to make a smooth, even surface, with the same thickness of the scratch coat. Traditional Hard Coat stucco is the most common type of stucco cladding used in the United States, it is applied in 3 layers over metal lath: Scratch coat 3/8 inch Brown coat 3/8 inch Finish coat 1/8 inch In industrial phrases lath, scratch and brown. Most commonly, stucco is applied on a basic wooden or metal framework, on concrete, or on plaster. This is why it is called a three coat system, lath, scratch and brown. CCP 4 enchances CCP1, 2 or 3 systems by adding a fiberlass reinforcing mesh and a Genesis leveling coat to the surface of the stucco to improve impact resistance and performance. Hard Coat TRAC for Foam Systems with Stucco Finish shall be Plastic Components, Inc. #_____. Hand Trowel Application. All together, these 3 layers with mesh lath will equal 7/8. C. Finish Coat, Color Coat Stucco: Follow manufacturer's instructions for application by the following method to a total thickness of approximately 1/8 inch (3 mm) minimum. As a stucco assembly, Teifs One Coat provides a durable exterior. Teifs One Coat has a min. Tips for Achieving Trouble-Free Three-Coat Stucco. In threecoat stucco, the first and second coats are 3/8-inch thick, and the finish coat is 1/8-inch for a total thickness of 7/8 to 1 inch. FastWall 300 is a standard 3-Coat stucco assembly with a base thickness between 3/4 in to 7/8 in. While the polymer based skin repels water very effectively, problems arise when moisture gets behind the synthetic stucco and is trapped inside the wall. Proper thickness can be ensured by spot checks with a thin measuring tool. Traditional" "Three-coat" stucco system (most common). 3 coats for precast concrete nominal min thickness 3/8 inch stucco. What is the correct thickness of stucco? Photo shows the first 2 steps of the 3 coat process- Scratch Coat & Brown Coat. . Quality Matters Tips for Achieving Trouble-Free Three-Coat Stucco . I'm confused between two opinions. General contractor: "you absolutely want three coats . What's Three Coat Stucco? As its name suggests, three coat stucco is applied in three layers: 3/8-inch thick scratch coat, 3/8-inch brown coat, and 1/8-inch finish . (22 mm), and weighs 10-12 lb. All exterior accessories shall meet ASTM D1784, C1063, C1861 and D4216. The third coat, the finish coat, is often pigmented for color and applied by smooth trowel, hand-textured, floated to a sand finish, or sprayed. The additional materials and labor make it a more expensive option than one-coat stucco. One of the cheapest sheathing options out there. EIFS was introduced in the US in the 60's and transitioned from commercial buildings to residential homes. A one coat stucco system consists of paper, foam backing, wire and two coats of exterior stucco. It can take weeks for each layer to be applied and cure. If the lath fasteners are numerous and penetrate at least 3/4 inch into the studs (rather than into just the sheathing), the lath assembly should be strong enough to support the . 3 coats cast in place or pre cast 5/8 inch nominal stucco. Basically the three coat system consists of paper and wire, a scratch coat, a brown coat and a finish, or "top" coat. This assembly utilizes Teifs One Coat Stucco Base Concentrate or Teifs One Coat Stucco Base Sanded. View complete answer on buyersask.com How thick is stucco coat? How thick is a 3 coat stucco system? a. 1 Coat vs 3 Coat Stucco Process; Boarding Up Your Windows Before Hurricane; Company Information. Fill any voids with extra material to produce a smooth, flat surface. This, too, is a bit of a misnomer. The base coat for PB systems is usually only 1/16-inch thick and finish coat thickness is typically no thicker than the maximum sand particle size in the finish coat. per sq. It is typically applied over a rigid foam board and lath to provide an Energy Code required Continuous Insulated durable cladding. Traditionally, it's at least 7/8 inch thick. 1) Make Sure The Substrate is . The three coats of stucco are the scratch coat, the brown coat, and the color coat. Two-coat applications are only for use over solid plaster bases without metal lath. For cast-in-place or precast concrete, the thickness for two-coat work is 3/8 inch. It is very common to find the in many of today's modern homes. These systems may be as thin as 3/8 inch. Finish Coat Stucco at 1/4 inch Thickness . Final coat is the color coat, about 3/16" thick, for a total stucco thickness of about 7/8" I have never heard of 2-coat stucco around here, although there is a one-coat stucco-like elastomeric product that is applied about 1/4" thick, over foam, one trade name being Dryvit. The big advantage of three-coat stucco is its strength and durability. Apply by hand trowel or plaster gun to a minimum . As determined by the protocol in the TR-12 (AF&PA 1999), the predicted value for . Trowel the 1/8" thick finish coat over the brown coat, starting at the bottom and working to the top of the wall. 3 Coat Stucco. The total thickness of material on the wall should now be 3/4 inch. 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. The building code has a minimum requirement for the thickness of Traditional Hard Coat stucco, it is 7/8 of an inch. The third coat, the finish coat, is often pigmented for color and applied by smooth trowel, hand-textured, floated to a sand finish, or sprayed. 1.