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. 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. Osb using adhesive or mortar suitable for bonding cement backer board to. No joints in cement board to occur at corners of windows. Buildings and structures located within the highvelocity hurricane zone shall comply with the pro. The product is much easier to work with than wood substrate, cement board or fiber cement sheathing, which tend to be heavy and bulky.
Recommended application guidelines for adhered thin brick veneer. Magnesiumoxide boards cause moisture damage inside facades in new danish buildings kurt kielsgaard hansen 1. Keep cement boards dry to minimize the potential for mold growth. In winter 201415, a number of problems began to appear with these boards since. Differences between wallboard, drywall and cement board. Both floor and roof sheathing are manufactured in 48 x. Installation over cement board using polymer modified mortar. Exterior applications guide cement board national gypsum. Recommended application guidelines for adhered thin brick.
Embed hardiebacker cement board firmly and evenly in the wet mortar. Permabase ultrabacker cement board provides excellent rigidity for special applications with the lowest waterabsorption rate. Fasten hardiebacker cement board with specified nails or screws as listed. If the cement board is framed well studs every foot with no load i think it would be fine.
Durock cement board for exterior walls terry love plumbing. 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. May be used up to a height not exceeding the lesser of. Rcm cemboard is a rigid, medium density, highperformance cement bonded particle building board which offers great strength and stability with the workability of wood. Cement board for more than 30 years, usg d urock brand cement board has set the standard for proven performance in the backerboard category. Cement board also comes in panels, but thats where its similarity to drywall ends. However, some people also like to use cement board for exterior walls. Usg durock cement board is not designed for use as a structural panel. Offset horizontal cement board joints a minimum of 12 from horizontal sheathing joints. 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. Xxsee the recommendations on page 20 before installing allura fiber cement siding over structural insulated panels thicker than 1. Usg durock brand cement board installation guide english. Wallsection over rigid insulation with additional sheathing 59.
Fiber cement siding installation guide pelican state inspection. I think most of them use fiberglass netting to hold the cement together. 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. Maximum installed weight of the finish system should not exceed 15 psf. Thin brick adhered to cement boards gfrc over metal or wood studs. These exterior grade corrosion resistant fasteners have a.
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. It is light gray in color and is flat and smooth on both surfaces. Cemboard is used primarily as an external sheathing board. Cement board structural sheathing is portland cement, reinforced with glassfiber mesh that creates a sheet that attaches easily to a wall. Provisions of this chapter shall govern the materials, design, construction and quality of gypsum board, lath, gypsum plaster and cement plaster. Differences between wallboard, drywall and cement board hunker. It has an exceptionally hard, durable surface that can withstand prolonged exposure to moisture. A complete breakdown of exterior wall sheathing options. Cement board, brick, metal, cast stone in waterproof mortar, slate, porcelain, glass.
Highperformance cement bonded particle building board. Intertek labs bt 6001 division 06 wood and plastics 060800 factoryapplied wood coatings 061600 sheathing. Pdf shear capacity of coldformed lightgauge steel framed. I did a woodstove surround on 12 drywall spaced from the surrounding wall by 12 using 1 wide scraps of drywall every 8 inches. I would like to replace the vinyl siding and the plywood underneath with the cement board. 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. Cement board is a very hard panel formed by cement slurry and reinforced fiberglass mesh. Best practices installation guide siding and trim products. Intended for use as an sfs sheathing board but may be used for other applications such as timber frame, modular or offsite. The sheathing panels are nominal 14 thick and nominal 12 thick. The appendix addresses the installation of james hardie siding products in less common construction practices e.
Corrosionresistant flashing shall be installed at all wall penetrations. 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. Performance of shear wall composed of lvl and cement fiber. For nonnailable substrates additional framing will likely be needed for supportattachment of the cementboard at vertical control joints. Install individual shakes over wall construction with framing spaced no more than. Use suficient supports extending under the entire length of cement boards to prevent sagging. Cement board can also serve as an excellent substrate for the application of adhered thin brick veneer. Use cement board without plywood for outdoor kitchen.
Armoroc structural cement board is a fireresistant alternative to wood based sheetgoods and poured systems. Densglass sheathing is lightweight and easy to handle. Use it as an underlayment or backing surface in a variety of interior. Permabase flex cement board very flexible yet strong, and ideal for use around archways, columns, stairwells wherever an evenly curved surface is required. Sheathing and wraps when fiber cement siding is installed, it should be applied over plywood, osb, or comparable sheathing. The subfloor should be apa spanrated plywood or osb with an exposure 1. All vertical joints of the cement board shall be staggered and terminate on framing. Performance of shear wall composed of lvl and cement. The sheathing may not be used as a finished exterior cladding. Do not use 14 usg durock cement board for wall or ceiling applications. Traditionally at 34 x 4 x 8, this panel cuts and installs with standard carpetry tool and equipment. Recommended installation instructions for permabase brand.
Offset vertical cement board joints a minimum of one stud space from vertical sheathing joints. Rockmax magnesium cement board is a fireproof sheathing design for semiexposed exterior wall. Do not apply cement boards with visible signs of moisture damage or mold growth. Cgc durock cement board to minimum 16 mm 58 thick exteriorgrade plywood. Glasroc x is a brand new external sheathing board from british gypsum which provides bba tested and bba certified 6 months weather protection. Builder board and foamtype sheathings are also acceptable. Inventory is sold and received continuously throughout the day.
As a sheathing board, it can be used behind rain screen cladding, insulated facades cedar cladding to name but a few applications. Fiber cement siding is applied over the structural wall sheathing, it is for. During the manufacturing and curing process, the wood. It provides a strong base on which to install tile and stone. Durock cement board offers architects, builders and tile contractors a strong. 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. Cemboard cement bonded particle board sheathing board rcm. In this application, it would be recommended to use a water resistant. It can be cut and fastened with standard drywall tools and fasteners. Take adequate care while transporting, storing, applying and maintaining cement boards. Cemboard cement bonded particle board sheathing board. Grabber cement board and high density sheathing screws have been specifically designed for use with cement board and high density exterior sheathing. Permabase allows the combination of exterior finishes on one continuous wall sheathing, providing greater design.
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. The sheathing panels are produced in 4 widths and 8, 9, and 10 lengths. I read a little bit that it is possible, but not on how it is done right. Exterior sheathing plywood that is marine grade or preservativetreated, alkaline copper quaternary. Weep screed cement board masonry veneer stone 2 1 6 4 5 5 3 7 8 1 6.
Densshield tile backer conforms to requirements of 2009 ibcirc code for tile backer in wet areas. Glass mat sheathing is like gypsum board but uses a fiberglass barrier instead of a paper material on the outside. Rockmax is leading chloride free mgo passed all the durability test to en 12467fiber cement sheathing standard. A hearth board is meant to lower temperatures from a relatively low temperature to an even lower onesay, 300 degrees to 150 degrees. Densshield tile backer board moisture barrier underlayment. 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. I was told by this owner that they do theirs over ac exterior graded plywood. May be applied directly over old sub strate on countertops to save time. Mgo board,magnesium cement board,structural mgo sheathing. Cement board the original that set the industry standard. We recommend 14 in hardiebacker ensure subfloor is not. Its the ideal ceramic tile underlayment for new construction, bathroom remodeling, pool areas, and many other high humidity or. Many design practices involve the use of fiber cement board fcb as sheathing material both for hollow and infilled walls. 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.
Prices, promotions, styles and availability may vary by store and online. Using cement board is common for floors or interior walls. 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 guide. Fiber cement board cladding installed over 58 type x gypsum wallboard lp flameblock sheathing applications. Ywall is a flexible cementcalcium building board, for applications that require a slightly lighter board with improved fire properties.
Usg durock cement board installs quickly and easily, while maintaining the brands tradition of quality and reliability. Lp flameblock should be installed with pyrotite facing the exterior cladding. When fiber cement siding is installed, it should be applied over plywood. Here are a few things to consider about using cement board for exterior walls. Permabase brand 09 28 00ngc cement board construction. The sureboard series 200s structural sheathing panels laminated with water soluble adhesive to 12 34 fiber cement panels listed under astm c25 and others. Easier to handle than cement board, densshield tile backer cuts and installs like drywall without special tools or fasteners. Weep screed cement board masonry veneerthin brick 1. Cgc durock brand cement board installation guide commercial. Permabase allows the combination of exterior finishes on one continuous wall sheathing, providing greater design flexibility.