Cover all of the corners, joints and seams, including the joint where drywall and cement board meet, with the fiberglass mesh tape. These screws have a coating to resist corrosion, a special wide head with cutting flutes and hi-low threads for a strong grip. Drive screws flush with the surface of the board, being careful not to break through mesh. Be careful not to damage the edge of the hole. Then screw in a “cutter” screw where you want the circle to be scored, for example, 2 in. Protect the bathtub with a dropcloth and seal the edges with tape to keep out debris. Today, most professional tile setters back their tile with cement board instead, because it offers almost the same durability with a lot less work. Spin the cutter while applying pressure to score a perfect circle. You should, so that any moisture that gets behind the cement board runs into the tub or shower instead of into your wall cavity (causing rot or mold/mildew). Do-it-yourselfers can use it too. from your measurements before you mark the cement board for cutting. Then score and break out the remainder using the procedures we showed in step 9. Once you are done installing the cement board, here are some bathroom tile trends you’ll want to explore. More nothing. Score the full length of the sheet about five or six times using firm downward pressure. Use nails or screws as temporary spacers to create a 1/8-in. The critical issue is when there is a gap between the subfloor and the underlayment. Fill all joints and corners, prefill the gap with polymer-modified bonding mortar; then embed 2" (5 cm) mesh tape and smooth material over the joint and corner. Add 1/2 in. Drill holes smaller than 1-1/2 in. We recommend our users to update the browser. Here are 13 tips to keep in mind when choosing bathroom tile. The goal is to provide at least 1-1/4 in. Finally, leave extra clearance around each piece by deducting about 1/4 in. Believe me, you want to avoid the knuckle-skinning task of trimming a little off. shims, and screw it in. thick board is unaffected by water, making it a great substitute for a mortar bed. Another option is to use some of the waterproof banding material that’s available with some of the sheet membrane systems. and is available at most full-service lumberyards and building supply centers. to the hole diameters for an easier fit. Extra blocking installed now makes it easier to screw in the edges of the cement board later. You’ll dull your knife blades, so have a few extra handy or buy a special carbide scoring tool that’ll last a lot longer. Screw full-length studs to the framing to support the outside edge of the cement board. Tile is easier to set and looks better on a straight wall. None according to instructions. Foam Board Insulation Types. thick cement board spans studs spaced 16 in. The manufacturer dictates to use thinset between subfloor and cement board. And the best part? Screw a full-size 3 x 5-ft. cement board to the back wall. above the tub lip to allow for movement of the tub and floor. Following the manufacturer’s recommendations, mix the thin-set mortar adhesive with enough water to form a thick paste. Saw the two sides of the window notch using a jigsaw. (Allow half a day to tear out the old tile and perhaps several more days to let damp wood dry out.) Drill a small hole in one end of a scrap of wood, attach it to the cement board at the center of the circle, screwing through the cement board into the work surface below. The traditional method of installing ceramic tile called for setting it in a solid mortar bed. Complete DIY projects like a pro! Face the rough side out if you will be using thin-set mortar adhesive to install the tile but the smooth side out if you will be using latex mastic. Currently the right window is the same size as the left but we are widening it. It is 1/2" durock over 1" nominal thick plank. Leave at least a 1/8-inch gap between all pieces to allow for expansion movement. You'll also need a roll of 2-in. Construct a homemade circle cutter for larger holes. I put the plastic and the cement board and the tile over the lip of the tub. (It's available at home centers.) (6.4 mm) gap between USG Durock™ Glass-Mat Tile Backerboard and tub surround. How to Clean Floors: Wood, Tile, Carpet and Everything Else, First-Timer’s Guide to Pouring a Concrete Patio. hole. spacer) to find the centers of the valve, spout and shower head. Upgrade the insulation on outside walls with new, higher R-value fiberglass batts. Hold the broken-off piece while you cut through the fiberglass mat on the back. Walls and Ceilings We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. Your email address will not be published. gap between sheets of cement board. Because of this I often get questions about which type of foam board insulation to use and what R values these products provide.. What about the waterproofing instructions? When the prep work is done, start the rewarding job of hanging the cement board. The 1/2-in. Log in. Remove any excess material before it hardens. Screw in blocking at the top edge of the tub to support and strengthen the lower edge of the cement board. The 1/2-in. I’ve written several posts about how to insulation basement walls in which I promote the use of foam board insulation as the first line of defense against moisture and mold. of backing at every edge. here are some bathroom tile trends you’ll want to explore. Complete the opposite wall and the small pieces next to the tub. If you overlap the moisture barrier with the raised lip around the tub, any moisture has only one path to take due to gravity -- down the barrier and into the tub. Cement board consists of two layers of fiberglass mesh sandwiched around a cement and sand core. away from edges to avoid breakage. cement board screws every 8 in. Although cement board is heavy and a bit awkward to cut, even a novice should be able to complete a professional-quality tub surround, ready to tile, in a day. We chose the tub surround because it’s highly leak-prone, and an ideal spot for cement backer board. I think the lone cabinet between the windows looks weird. Patio Tiles: How to Build a Patio With Ceramic Tile, Build an Outdoor Table With Tile Top and Steel Base, How to Remove Paint from Concrete and Other Stains, How to Build and Pour Your Own Modern Concrete Patio, Garage Floor Resurfacing: Fix a Pitted Garage Floor, How to Build a Deck Over a Concrete Patio, How to Move Large Rocks: Tips for Hauling Heavy Stones and Concrete Block, How to Cover a Concrete Patio With Pavers, Laminate Repair Tips: Reglue Loose Laminate, Renew Your Concrete Patio: How to Stain Concrete, How to Choose and Use Concrete Fasteners, Masonry Screws, We are no longer supporting IE (Internet Explorer). with an old spade bit or a carbide-grit hole saw. B). As long as the Durock sits past the flange so that water will run down into the tub and not behind it then you’ll be OK. Cement board, technically called cementitious backer unit (CBU), is manufactured under different brand names. Space the bottom sheets 1/4 in. You don't even have to let the thin-set dry. This is the cabinet drawing for the side opposite the fridge and range in our galley kitchen renovation. For the fiberglass mesh tape be sure to use the special, heavier type sold for use with thin-set mortar, as regular drywall mesh tape will rot. Add the vapor barrier. While the tubs themselves usually have some information they differ from brand to brand. All preferable to doing nothing. You'll later fill in this gap with caulk. So, when I did my shower 6 years ago, I followed the instructions that the people at Menards gave me and put plastic sheet between the stud wall and the cement board. on center. hot-dipped galvanized roofing nails. Something like, Schluter has some good information about this procedure. You can also use regular blades, though they’ll wear out after a few cuts. Use carbide grit jigsaw blades to cut cement board. Cement board is a thin layer of mortar sandwiched between sheets of fiberglass mesh cloth. So what do you do? In this article, we’ll show you how to create a strong, durable and waterproof tile base around your bathtub using cement board. Just finish it with a setting-type joint compound, which comes in 25-lb. Around the perimeter of each board, locate fasteners within 1/2"-1" (1.3-2.5 cm) of the edge. The 1/2-in. If you are installing Durock cement board, and not foam board, then you don’t have to gap the boards, especially not 1/4 inch. Place special 1-1/4 in. There are three basic foam insulation board products … Push the plastic tightly into the corners before stapling to avoid creating a bridge of plastic that will tear when you install the cement board. To begin with you can try reading the instructions for the backerboard… which then will reveal… nothing. There you have it. Other sizes, like 3 x 4 ft., 3 x 6 ft. and 4 x 4 ft., are available, but you may have to contact a tile supplier to find them. When fitting backerboard above a tub, leave a 1/4-inch gap between the bottom edge of the board and the tub rim. All your hard work will start to pay off as the first sheet goes up. Measure out from the back wall and up from the tub shoulder (plus the 1/4-in. Do Not Sell My Personal Information – CA Residents. The thin-set is a cement-based powder that you mix with water or latex additive to form a thick paste, which is used to seal the seams in the board and can also be used to set the tile. Hanging cement board is one job where gaps are desirable. Remove bumps and rough edges with a utility knife or a wood rasp with a replaceable blade. Cut drywall to fill in between the existing wall or ceiling and the cement board. Don't worry if the tile doesn't cover the joint between the cement board and the drywall. Score one side to cut the fiberglass mesh, then snap it like drywall. Cement board is a thin layer of mortar sandwiched between sheets of fiberglass mesh cloth. spacers. This is a critical step. And many tiles aren’t either. Now's the time to straighten crooked studs. Cement board has a smooth side and a rough side. You'll have to remove the faucet handles, tub spout and shower head. USG Durock™ Brand Glass-Mat Tile Backerboard panels may be fastened to framing horizontally or vertically with stud spacing at a maximum of 24 inches on center with blocking at horizontal joints or 16 inches on center without blocking. Tear out the old tile and backing to the bare studs. When you squeeze the thin-set mortar into this gap, it will lock the two sheets together and strengthen the seam. If this dimension is more than 1/2 in., add strips of wood to the studs so the cement board will be precisely flush with the old wall. This was the drawing that was proposed. Avoid driving them at an angle. Shim low spots with strips of roofing felt stacked up to the right height or with thin strips of wood. Add wood blocking now where you will be installing towel bars, grab bars or shower doors; then you won't have to rely on those frustrating little plastic anchors to hold up your fixtures. Our project, tiling the walls around a standard 5-ft. tub to a height of 6 ft., requires four 3 x 5-ft. sheets. Snap the board along the scored line by laying it over the edge of your work surface and pressing down. Three different ways to treat the tub seam. Add wood backing where grab bars, shower curtain rods or shower doors will be. Use a single piece to avoid seams. from the center for a 4-in. Also, I wouldn’t worry about the two sides being different. Move over solid mortar bed, and say hello to cement boards. If special screws aren't available, attach the cement board with 1-1/2 in. When you're done covering the tape with thin-set, you're ready to tile. thick, weighs 45 to 60 lbs. As shown in the inset photo, pound out the circle with your hammer. Repeat the process on the other side. Complete the job by piecing in any missing drywall and taping the seams. along each stud but 1 in. Cover the tape with a skim coat of thin-set mortar, squeezing it through the tape to fill voids and cracks. Setting-type compound is stronger and more water-resistant than the type that hardens by drying. Spread the thin-set over the tape. In this article, we’ll show you how to create a strong, durable and waterproof tile base around your bathtub using cement board. Cut backerboard so its edges will be centered on the studs and fasten it to the studs with backerboard screws. Here are 13 tips to keep in mind when choosing bathroom tile. Finally, you'll need an 8 x 12-ft. piece of 4-mil plastic sheeting and some straight 2x4s. Make a sketch of the wall showing the dimensions and hole sizes. Allow the point to stick out the bottom. Screw the drywall to the studs. If you can't find them at a home center, call tile specialty stores. The standard size sheet is 3 x 5 ft. and 1/2 in. Add blocking and other framing details before hanging the cement board. You’ll ruin a couple of knife blades while cutting, so keep some extras handy. It will bounce and then the grout tends to crack. Troweling a perfectly flat bed required great skill, but the reward was a tile job that lasted for decades. Add studs to the inside corners if necessary. Any gaps will be covered with mesh tape and thin-set. Mark the hole centers on the cement board. Set the completed sheet in place, spacing it above the tub shoulder with 1/4-in. You can also screw or nail a straight stud alongside a crooked one. bag of thin-set adhesive, both available at home centers. To attach the cement board to the studs, you'll need special 1-1/4 in. Mark the next sheet for cutting. Drape the plastic into the tub and cut it off after the cement board is installed. Measure the thickness of the drywall or plaster where the cement board will meet it. Wear a NIOSH-approved dust mask when mixing the powder. Cement board, commonly sold under trade names such as Durock, Hardiebacker, and WonderBoard, is now the standard underlayment used for ceramic, porcelain, or stone tile laid with thinset mortar adhesive.Cement board is used for most floor tile and has all but replaced plywood and drywall backer materials for wall-tile applications in wet areas, like showers and tub …
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