Thin brick adhered to cement boards gfrc over metal or wood studs. The product is much easier to work with than wood substrate, cement board or fiber cement sheathing, which tend to be heavy and bulky. Offset horizontal cement board joints a minimum of 12 from horizontal sheathing joints. In this application, it would be recommended to use a water resistant. Recommended application guidelines for adhered thin brick veneer. Cement board structural sheathing is portland cement, reinforced with glassfiber mesh that creates a sheet that attaches easily to a wall. During the manufacturing and curing process, the wood. Do not use usg durock cement board with vinyl flooring. Exterior applications guide cement board national gypsum. Fiber cement siding is applied over the structural wall sheathing, it is for. Permabase ultrabacker cement board provides excellent rigidity for special applications with the lowest waterabsorption rate. Rockmax is leading chloride free mgo passed all the durability test to en 12467fiber cement sheathing standard. Use cement board without plywood for outdoor kitchen. When fiber cement siding is installed, it should be applied over plywood.
Differences between wallboard, drywall and cement board. Magnesiumoxide boards cause moisture damage inside facades in new danish buildings kurt kielsgaard hansen 1. Use suficient supports extending under the entire length of cement boards to prevent sagging. It can be cut and fastened with standard drywall tools and fasteners. Rcm cemboard is a rigid, medium density, highperformance cement bonded particle building board which offers great strength and stability with the workability of wood. Senergy cement board stucco is a highimpact, waterdrainage wall cladding system that incorporates a waterresistive barrier and features a cement board astm c25 core installed with a polymermodified base coat, fiberglass reinforcing mesh, and finishes. The exterior cement board meeting astm c 25 by others and fasteners by others are applied over dryvit md spacers drainage medium, dryvit backstop nt or other code approved waterresistive barrier and approved exterior sheathing. Permabase brand 09 28 00ngc cement board construction.
Cement board for more than 30 years, usg d urock brand cement board has set the standard for proven performance in the backerboard category. I think most of them use fiberglass netting to hold the cement together. Cgc durock cement board to minimum 16 mm 58 thick exteriorgrade plywood. Cemboard cement bonded particle board sheathing board rcm. Embed hardiebacker cement board firmly and evenly in the wet mortar. Differences between wallboard, drywall and cement board hunker. I read a little bit that it is possible, but not on how it is done right. Fiber cement board cladding installed over 58 type x gypsum wallboard lp flameblock sheathing applications. Cement board also comes in panels, but thats where its similarity to drywall ends. Lp flameblock should be installed with pyrotite facing the exterior cladding. Installation over cement board using polymer modified mortar. Provisions of this chapter shall govern the materials, design, construction and quality of gypsum board, lath, gypsum plaster and cement plaster. Performance of shear wall composed of lvl and cement. The sheathing panels are produced in 4 widths and 8, 9, and 10 lengths.
I would like to replace the vinyl siding and the plywood underneath with the cement board. The benefit to this type of substrate is that the cement board can be fastened to the structure, and the application of the thin brick can begin immediately. The subfloor should be apa spanrated plywood or osb with an exposure 1. Cemboard cement bonded particle board sheathing board. Usg durock cement board is not designed for use as a structural panel. Highperformance cement bonded particle building board. Ywall is a flexible cementcalcium building board, for applications that require a slightly lighter board with improved fire properties. Densshield tile backer board moisture barrier underlayment. Maximum installed weight of the finish system should not exceed 15 psf. Many design practices involve the use of fiber cement board fcb as sheathing material both for hollow and infilled walls. Durock brand cement board with edgeguard offers enhanced, proprietary edge performance, preventing spinout and crumbling.
Performance of shear wall composed of lvl and cement fiber board sheathing maryoko hadi1, satoru murakami1, akihisa kitamori2, wenshao chang3 and kohei komatsu4 1 doctorate candidate, rish kyoto university, japan 2 assistant professor, rish kyoto university, japan. Densshield tile backer conforms to requirements of 2009 ibcirc code for tile backer in wet areas. Permabase allows the combination of exterior finishes on one continuous wall sheathing, providing greater design. A hearth board is meant to lower temperatures from a relatively low temperature to an even lower onesay, 300 degrees to 150 degrees.
Keep cement boards dry to minimize the potential for mold growth. Xxsee the recommendations on page 20 before installing allura fiber cement siding over structural insulated panels thicker than 1. Using cement board is common for floors or interior walls. Do not use 14 usg durock cement board for wall or ceiling applications. Densglass sheathing is lightweight and easy to handle. The sheathing may not be used as a finished exterior cladding. The sheathing panels are nominal 14 thick and nominal 12 thick. Rcm ywall is used primarily as an external sheathing or. It is light gray in color and is flat and smooth on both surfaces. Offset vertical cement board joints a minimum of one stud space from vertical sheathing joints. The board consists of grey cement and limestone filler, reinforced with a specially selected fibre material that can absorb and release moisture without affecting durability, strength or performance. Exterior sheathing plywood that is marine grade or preservativetreated, alkaline copper quaternary. Its the ideal ceramic tile underlayment for new construction, bathroom remodeling, pool areas, and many other high humidity or. Durock brand cement board with edgeguard offers architects, builders and tile contractors a strong, waterdurable tile backerboard for floors, walls, countertops, tub, shower areas and exterior finish systems.
Magnesium oxide board, mgoboard, is a factorymade sheathing board product, which has been widely used in the last 5 years in ventilated facades on new or renovated buildings in denmark. Permabase allows the combination of exterior finishes on one continuous wall sheathing, providing greater design flexibility. Glass mat sheathing is like gypsum board but uses a fiberglass barrier instead of a paper material on the outside. It provides a strong base on which to install tile and stone. Rockmax magnesium cement board is a fireproof sheathing design for semiexposed exterior wall. Intended for use as an sfs sheathing board but may be used for other applications such as timber frame, modular or offsite. Permabase brand 09 28 00ngc cement board construction guide. Mgo board,magnesium cement board,structural mgo sheathing. All vertical joints of the cement board shall be staggered and terminate on framing. Permabase flex cement board very flexible yet strong, and ideal for use around archways, columns, stairwells wherever an evenly curved surface is required. Osb using adhesive or mortar suitable for bonding cement backer board to. Traditionally at 34 x 4 x 8, this panel cuts and installs with standard carpetry tool and equipment. Grabber cement board and high density sheathing screws have been specifically designed for use with cement board and high density exterior sheathing.
Fasten hardiebacker cement board with specified nails or screws as listed. We recommend 14 in hardiebacker ensure subfloor is not. Do not apply cement boards with visible signs of moisture damage or mold growth. As a sheathing board, it can be used behind rain screen cladding, insulated facades cedar cladding to name but a few applications. Inventory is sold and received continuously throughout the day. Corrosionresistant flashing shall be installed at all wall penetrations. Take adequate care while transporting, storing, applying and maintaining cement boards.
May be used up to a height not exceeding the lesser of. Easier to handle than cement board, densshield tile backer cuts and installs like drywall without special tools or fasteners. This product resists direct moisture, making it a top choice for installation in areas of high humidity. The appendix addresses the installation of james hardie siding products in less common construction practices e. Durock cement board offers architects, builders and tile contractors a strong. Best practices installation guide siding and trim products. Magnesium oxide board, mgoboard, is a factorymade sheathing board product, which has been widely used in the last 5 years in ventilated facades on new or renovated buildings in.
Use it as an underlayment or backing surface in a variety of interior. May be applied directly over old sub strate on countertops to save time. Glasroc x is a brand new external sheathing board from british gypsum which provides bba tested and bba certified 6 months weather protection. Here are a few things to consider about using cement board for exterior walls. Cement board can also serve as an excellent substrate for the application of adhered thin brick veneer. A complete breakdown of exterior wall sheathing options. Cement board the original that set the industry standard. Cement board, brick, metal, cast stone in waterproof mortar, slate, porcelain, glass. Intertek labs bt 6001 division 06 wood and plastics 060800 factoryapplied wood coatings 061600 sheathing. Fiber cement siding installation guide pelican state inspection. Armoroc is a lightweight, fast alternative to poured concrete and because we offer a wide variety of ul tests and accept most finish systems, armoroc is ideal for your firerated.
Cemboard is used primarily as an external sheathing board. Senergy cementboard stucco system overview highly impact and punture resistant, waterdrainage wall system incorporating a cement board core, reinforced base coat and 100% acrylic polymer exterior finish. Sheathing and wraps when fiber cement siding is installed, it should be applied over plywood, osb, or comparable sheathing. Prices, promotions, styles and availability may vary by store and online. Recommended installation instructions for permabase brand. I did a woodstove surround on 12 drywall spaced from the surrounding wall by 12 using 1 wide scraps of drywall every 8 inches. Usg durock cement board installs quickly and easily, while maintaining the brands tradition of quality and reliability. The product is much easier to work with than cement board, fiber cement sheathing or magnesium oxide sheathing which tend to be heavy and brittle. Usg durock brand cement board installation guide english. If the cement board is framed well studs every foot with no load i think it would be fine. However, some people also like to use cement board for exterior walls.
One of the major advantages that you will get by using cement board for an exterior wall is durability. Builder board and foamtype sheathings are also acceptable. Wallsection over rigid insulation with additional sheathing 59. Or can i put cement board directly mounting to the frame like this. Weep screed cement board masonry veneer stone 2 1 6 4 5 5 3 7 8 1 6. Durock cement board for exterior walls terry love plumbing. I told him i wanted cement board because i heard it was better and he disagreed and said he sees more problems with cement board and he feels some tile companies recommend it to drive up their prices and that is is not necessary and not a good deal for the consumer. These exterior grade corrosion resistant fasteners have a. It is designed to provide temporary weather protection for a number of external structural frame steel sfs constructions where the facade cladding system is fixed through into the sfs stud. In winter 201415, a number of problems began to appear with these boards since. It has an exceptionally hard, durable surface that can withstand prolonged exposure to moisture. I was told by this owner that they do theirs over ac exterior graded plywood.
Pdf shear capacity of coldformed lightgauge steel framed. Recommended application guidelines for adhered thin brick. Install individual shakes over wall construction with framing spaced no more than. Cgc durock brand cement board installation guide commercial.
Performance of shear wall composed of lvl and cement fiber. Both floor and roof sheathing are manufactured in 48 x. No joints in cement board to occur at corners of windows. Armoroc structural cement board is a fireresistant alternative to wood based sheetgoods and poured systems.
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