Project Instructions Step 1 Attach two layers of Grade D, waterproof building paper using galvanized nails or staples in a shingled fashion over the wall sheathing extending 16 inches around all corners. Polymer based (PB) systems, sometimes known as thin coat, soft coat, or flexible finishes, are the most common. Install stucco as an exterior wall cladding over rigid foam insulation with proper preparation to provide water management as well as a sound substrate for the stucco. Garden Guides | How to Stucco a Cinder Block Chimney Chapter 14: Exterior Walls, 2017 FBC - Building, 6 th edition | UpCodes Hello everyone, On this short video clip I am explaining the Stucco thickness on Cinder block or CMU walls. The ASTM will also give the correct standards for thickness for Stucco over CMU along with the correct mix design. Conventional stucco over wood should always be applied as a three-coat system. How to Stucco a Concrete Wall & Blockwork (The Easy Guide-DIY) For unit masonry, that thickness is inch. PDF Armourwall 100 WaterMaster CMU Stucco Assembly Specifications - Parex astm c90 compliant concrete masonry units stucco thickness variations due to allowable cmu size tolerances notes . StuccoMax is designed to be environmentally responsible, utilizing natural limestone sand and NO Portland type cements, it is sustainable and emits no pollutants. Looks aren't an issue since this is the base layer. Myth #1: Stucco on lath over CMU/concrete is superior to direct-applied. The CMU were installed in August (6 months ago). Stucco Installation Standards - Cement These are direct-applied systems, meaning that there is no metal lath involved. Specification: SMA Guide Specification for 3-coat Portland Cement Plaster (Stucco) applied to Framed Walls (2017) Specification: SMA Guide Specification for 2-coat Portland Cement Plaster (Stucco) applied to Concrete or Masonry Walls (2017) Note: Downloading any "specification" is acknowledgement of reading and agreeing to the SMA "Caveat . Stucco Thickness Over Block / CMU Walls is inch If the stucco is applied too thick, there is a tendency for the stucco to crack and if it's too thin, the mortar joints between the blocks may show through the stucco; thus, the wall loses part of its aesthetic look or appeal. Cracking the Code: The Thickness of Plaster | Walls & Ceilings Determine the location of the wall's water control layer (typically behind the insulation over the exterior sheathing). The outer layer, TOTAL WALL Finish, is an all-acrylic, pre-textured and pre-colored finish coat at approximately 1/32" to 1/8" thickness depending on the desired texture. Let the scratch coat cure for 24 to 48 hours, keeping the . Diamond Wall One Coat is available either as the Diamond Wall Insulating System, Diamond Wall System, or the Diamond Wall PM System. Over Masonry Stucco Repair. Place a flat edge over the strips and drag it to remove excess stucco. Always refer to the fire-rated assembly test before making an assumption. The two materials are made from the same basic ingredients and are extremely compa ble. Step-by-Step on How to Stucco | Hunker I would suggest that you look at a new product that passed the large missle impact test in Fl with a thickness of only as thick as a nickel. Spread the stucco over the entire surface, to a thickness of 1/8 to 1/4 inch. Step 2 Install trim accessories. For cast-in-place or precast concrete, the thickness for two-coat work is 3/8 inch. World's First and Only Thermal Stucco, Fire-Resistant Stucco, Water-Resistant Stucco, Light Weight Stucco, Sustainable Stucco, High Crack Resistant Stucco, Vapor Permeable Stucco, Ecologic Stucco, Mold Resistant Stucco, True Green Building Material, Sustainable Insulation, LEED Friendly, Title 24 Compliant, Acoustic Plaster, Precast Concrete . Stucco myths and facts - Construction Specifier What Is EIFS Stucco? A Better Explanation - The Stucco Guy Attachment of Metal Plaster Bases to Masonry/Concrete 17 18. Applying Stucco to Block Is Far From a Simple Project Stucco over Masonry, Concrete or Concrete Masonry Units (CMU)- Caveats: Lath is option and intended for walls requiring cement thickness greater than 5/8 inch. Channeled Adhesive CI Design with MaxGrip Veneer Mortar. 7 What should the thickness of stucco be over a CMU wall? Direct Applied applications over concrete masonry may use a 1/4" ground-casing PDF Technical Bulle n - Florida Lath & Plaster Bureau Allow the final coat to cure over the next several days. Spread the base layer on the chimney to a thickness of the wood strips so that the stucco is even with the top of the strips. Waterproofing for CMUs: What About Stucco? - Construction Specifier Thickness of foam can be greatly increased beyond two inches limited for cement stucco. Three Coat Stucco - Omega Products International In ASTM C926, the Standard Specification for Application of Portland Cement-Based Plaster, thicknesses are provided for scratch, brown, and finish coats. BuildBlock ICFs: Applying Stucco on BuildBlock ICF Forms Omega . Paint or decorative cementitious finish less than 5 / 8 inch (17.1 mm) thick adhered directly to the masonry foundation sidewall. Dryvit Commercial Cement Plaster (CCP) is a single source stucco solution combining the best of old and new world technology to create a better stucco wall assembly. The thickness can be one-eighth- to one-half-inch, depending on your local building codes. Plaster and Stucco for Concrete Masonry - Ncma Use required pressure so as to press the mix into the wall as you go on applying it. . 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. Wire stucco lath is placed over the foam insulating board and attached to the masonry below using concrete nails. If you choose to do so, plan a total thickness stucco approximately 3/8 inch (9.5 mm) for concrete, and inch (13 mm) for masonry. Revisiting "Florida's Billion Dollar Stucco Problem" - AriasBosinger Apply the base coat stucco using a square trowel held at a 45 degree angle. Step 5 Building a stucco wall | Pro Construction Guide 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. . You can smooth the coat with a float if you desire a smooth surface, or you can add a texture to it according to your preferences. Unscrew the wood strips and fill in the space with stucco. If you have cinder blocks and want to stucco over them, you would pressure wash first, then apply a base coat, then when it sets and cures usually about two weeks, you can apply a color . 5. CI (Continuous Insulation) 14 14. Stucco - Cement U-STUCCO The best stucco solution for ICF, EIFS, AAC Blocks, Wood 2020 Florida Building Code, Building, 7th Edition - Icc Depending on the contamination, you might only need to wash with water. Nominal thickness = 7/8". TIP: vertical seams should be overlapped by 6 inches and horizontal seams should be overlapped by 4 inches. Fibered Stucco may be used in place of TOTAL WALL Hard Coat. Orlando, Florida 32822 09.070.0103: Stucco Assembly - Stucco Over CMU with Insulation Apply a thin coating, approximately 1/4 " (6.4mm) or 1/2 (12mm) with the trowel, then wait till it dries. With modern cement on a rigid surface, there is no need to wait for the scratch coat to dry completely. Florida Lath & Plaster Bureau 6353 Lee Vista Blvd. The first coat you apply to the concrete wall is the scratch coat. Wait for it to stiffen, and then scratch the surface with a raking tool to form 1/8-inch deep horizontal grooves. 2. Lapping of Lath 16 SECTION C: MIXING & APPLICATION 17. Senergy Details - Master Builders Solutions If you are contracting this out ask your contractor to furnish the ASTM standard for Stucco over NEW CMU it will state the requirements & method to use. . Paint or decorative cementitious finish less than 5 / 8 inch (17.1 mm) thick adhered directly to the masonry foundation sidewall. Most all fire-rated assemblies require 7/8-inch and some require a full 1-inch thick cement plaster. Requires a three-step process for a 7/8" thickness total (3/8" scratch coat, 3/8" brown coat & 1/8" finish texture) . 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. Table 4 summarizes the recommended nominal plaster coat thicknesses for both two and three coat work. Thanks to modern cement, you can apply it as soon as the base coat is rigid enough to withstand cracking. Technical Bulletin, Stucco over metal lath attached to CMU PUSA 66-12.pdf The Armourwall 100 WaterMaster System is qualified on fire rated and non-combustible construction. The finish coat is applied from the top down and the whole wall surface must be covered without joinings (laps or interruptions). Ann MacKinnon, office manager of LaVereda developer Communico, said that The company often used Thermax over concrete block walls and under stucco on buildings, as do most builders in the Santa Fe area. There are two basic stucco applications used in Florida. A code approved water resistive . A variety of finish options are available including ColorTek stucco, AkroFlex acrylic stucco . Step 5. Commercial Cement Plaster (CCP) 1 - Dryvit 09.070.0103: Stucco Assembly - Stucco Over CMU with Insulation 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. How thick is exterior stucco? - WisdomAnswer Specifics for these wall assemblies and allowable continuous insulation thickness are listed in the ICC Evaluation Report ESR 2564. 3) Foam Insulating Board: The foam usually acts as a major insulator for the wall and can come in different thicknesses (ranging from 1" - 6") and the thicker the foam, the more R Value you can get out of your walls. Stucco can be applied directly over the ICF, without a membrane above grade; below-grade requires waterproofing). Stucco over High-R Thermax Polyisocyanurate Insulation Board The scratches will make the next layer stick better. Approved One-coat Stucco assemblies offer other options. 12. The scratch coat must be scored horizontally on vertical surfaces. Then three coats of masonry stucco cement are applied in a 3/8-inch scratch coat, followed by a 3/8-inch brown coat, and finally a 1/8-inch finish coat. How to Stucco a Cinder Block Wall - Decor Dezine CCP 1 is a traditional stucco system (old) over concrete or CMU construction with modern polymer technology applied to the finish (new), providing the traditional stucco assembly . Stucco thickness on Cinder block or CMU walls. Application When applying this coat, don't wait for the scratch coat to completely dry. Microsoft Word - stucco over cmu (SMA) Author: HAWKFAN12 Created Date: 2/13/2020 5:18:35 PM . The finish coat is applied to a predamped, but still absorptive, base coat to a thickness of about in. How thick is exterior stucco? 3. SPECIFICATIONS | Stucco Manufacturers Association A 4-inch (102 mm) inspection space above patio and garage slabs and entry areas. called Hard Coat Stucco, One Coat Stucco or Traditional Stucco Historically, Hard Coat Stucco is applied in three separate coats; each coat is permitted to cure for up to two weeks; final thickness averaged from 3/4 to 2 inches Stucco application has evolved to save time, labor and material; the process and blend is called One Coat Stucco For traditional stucco, a mechanical attachment is required (metal lath screwed to the wall through the plastic webs, or similar attachment). You can apply stucco over wood sheathing, masonry or brick. 4specs Discussion Forum: NOMINAL STUCCO THICKNESS BuildCrete is a true one-coat finish designed to adhere directly to any EPS foam, CMU block, DensGlass, Securock, concrete and other building materials. Maximum Variation from True Flatness: 1/8 inch in 10 feet. Generally, stucco that is applied directly to solid surfaces is placed in two coats that together total 5/8 inch of thickness. An Overview Of The Three Coat Stucco Process - The Stucco Guy PDF 1028 DIRECT APPLIED OVER CONCRETE MASONRY Products Accessories - Total Wall Stucco Over Rigid Foam Insulation | Building America Solution Center - PNNL After the cement is on the wall, a scratcher is used to make horizontal lines in the stucco mix, in order for the next coat (the brown coat) to stick to it. Spray the cinder blocks to dampen them. Starting the Installation: Standard - Non WaterMaster Stucco System 12 13. Systems - Dryvit Stucco Over Concrete: Tips, Tricks and Who to Hire (Walls & Foundations) Myth #1: Stucco on lath over CMU/concrete is superior to direct-applied. However, the WRB (building paper and house wraps) prevents the bond between the plaster (stuc-co) and the concrete. BuildCrete has been used on ICF construction for its durability, strength, and ease of application. 3D PDFs. Stucco Contractors | New Stucco, Stucco Repair, and Refinishing August 5, 2016 . Despite protestations by the stucco sub, stucco was installed on lath over concrete per the architect's direction.In our work as forensic . stucco over ICF - GreenBuildingTalk - GreenBuildingTalk - Green Therefore, thickness could be as thin as 3/4" and thick . Where stucco has been erroneously packed out without reinforcing, a fix . Work from the bottom of the stucco wall up and apply at a thickness of about inch over the entire area. If. U-stucco Xpx What is the correct thickness of stucco? | Nurse Stucco Stucco thickness depends on the backup system and on whether or not lath is present. Properly done, it's a great combina on. It is a myth that stucco on lath over CMU/concrete is superior to direct-applied, as illustrated by the cracks in this hotel wall. This coupled with the fact that attaching a lath and WRB to concrete . Building a Stucco Wall | QUIKRETE: Cement and Concrete Products The difference in thickness with adjacent stucco also increases the likelihood of cracks developing. StuccoMax GigaCrete Lath, Trim-Accessories 15 15. CCP 2 is a traditional stucco assembly over wood or steel frame construction with a Dryvit approved sheathing and a Dryvit polymer finish. The minimum thickness over framed walls is 3/4-inch. 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. Download File 2018-BuildCrete-Stucco-Plaster-Pool-Plaster-Brochure-1.pdf - 1 MB. Boards are typically square cut and the largest common board size is usually 2 x 4. Apply the Scratch Coat. Stucco Installation, Procedures and Guidelines Leave a thickness of about inch (6.4 mm) for the final coat. Average Cost to Stucco a House The cost to stucco a 1,500-square-foot home is approximately $9,525, with most homeowners paying between $8,000 and $11,100 for materials and equipment, as well as planning, area preparation and protection, setup, stucco . Some contractors will use paper or house wrap behind the stucco, but it's not necessary. Three Coat Application: At metal lathed surfaces, apply scratch coat to a nominal thickness of 3/8 inch, brown coat to a nominal thickness of 3/8 inch, and finish coat to a nominal thickness of 1/8 inch. The structural backup is concrete masonry, with rigid insulation between Z-channel furring. Synthetic stucco consists of a polymer based laminate that is wet-applied, usually in two coats, to rigid insulation board that is fastened to the wall with adhesive, mechanical fasteners, or both. ASTM C926, Standard Specification for Application of Portland Cement-based Plaster , includes a Section 5.2, which discusses remedies when bond cannot be achieved over solid bases. PDF stucco over cmu (SMA) - Stucco Manufacturers Association Cover Foundation Block with Stucco, Need Lath? Sealing the CMU before stucco application renders this process null, and results in the future debonding of the stucco from the CMU. (3.2 mm). The bond and/or thickness of the cement plaster will determine the need for a lath. Stucco Wall Methods and Choices - Best Practices Guide - InspectAPedia Applies directly over EPS, stucco or (CMU) cement block etc. Accessories 1. Repairs over CMU blocks or other masonry surfaces require that we remove all loose stucco, apply a masonry bonding agent, and finally apply stucco and textured feathering around the patch. 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