Staple 4-mil plastic sheeting to the framing. Mark the hole centers on the cement board. When you're done covering the tape with thin-set, you're ready to tile. Walls and Ceilings Wear a NIOSH-approved dust mask when mixing the powder. 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. When fitting backerboard above a tub, leave a 1/4-inch gap between the bottom edge of the board and the tub rim. And many tiles aren’t either. While the tubs themselves usually have some information they differ from brand to brand. 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. Foam Board Insulation Types. Measure the thickness of the drywall or plaster where the cement board will meet it. 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. Avoid driving them at an angle. Just finish it with a setting-type joint compound, which comes in 25-lb. spacer) to find the centers of the valve, spout and shower head. Now's the time to straighten crooked studs. Cement board consists of two layers of fiberglass mesh sandwiched around a cement and sand core. Complete the opposite wall and the small pieces next to the tub. The critical issue is when there is a gap between the subfloor and the underlayment. Something like, Schluter has some good information about this procedure. hole. here are some bathroom tile trends you’ll want to explore. Extra blocking installed now makes it easier to screw in the edges of the cement board later. It will bounce and then the grout tends to crack. To attach the cement board to the studs, you'll need special 1-1/4 in. Screw full-length studs to the framing to support the outside edge of the cement board. 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. Upgrade the insulation on outside walls with new, higher R-value fiberglass batts. thick board is unaffected by water, making it a great substitute for a mortar bed. 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. All your hard work will start to pay off as the first sheet goes up. Snap the board along the scored line by laying it over the edge of your work surface and pressing down. You can replace your old tub faucet with a new pressure-balancing shower valve. Tile is easier to set and looks better on a straight wall. Screw the drywall to the studs. from the center for a 4-in. To begin with you can try reading the instructions for the backerboard… which then will reveal… nothing. When you squeeze the thin-set mortar into this gap, it will lock the two sheets together and strengthen the seam. The standard size sheet is 3 x 5 ft. and 1/2 in. and is available at most full-service lumberyards and building supply centers. Press a straightedge against the studs. I think the lone cabinet between the windows looks weird. The goal is to provide at least 1-1/4 in. 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. Be careful not to damage the edge of the hole. 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 … 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. The plastic serves as a vapor barrier for the insulated wall and as a last defense against any water that may sneak through the tile and cement board. This was the drawing that was proposed. Drape the plastic into the tub and cut it off after the cement board is installed. You’ll ruin a couple of knife blades while cutting, so keep some extras handy. Score the full length of the sheet about five or six times using firm downward pressure. 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. Remove bumps and rough edges with a utility knife or a wood rasp with a replaceable blade. This is a critical step. Add 1/2 in. Leave at least a 1/8-inch gap between all pieces to allow for expansion movement. Cement board is a thin layer of mortar sandwiched between sheets of fiberglass mesh cloth. away from edges to avoid breakage. We chose the tub surround because it’s highly leak-prone, and an ideal spot for cement backer board. Troweling a perfectly flat bed required great skill, but the reward was a tile job that lasted for decades. 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. Do-it-yourselfers can use it too. gap between sheets of cement board. Hanging cement board is one job where gaps are desirable. This is the cabinet drawing for the side opposite the fridge and range in our galley kitchen renovation. Finally, you'll need an 8 x 12-ft. piece of 4-mil plastic sheeting and some straight 2x4s. Saw the two sides of the window notch using a jigsaw. 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. Hold the broken-off piece while you cut through the fiberglass mat on the back. Repeat the process on the other side. As shown in the inset photo, pound out the circle with your hammer. Sign up for our newsletter! Measure out from the back wall and up from the tub shoulder (plus the 1/4-in. Add studs to the inside corners if necessary. Add wood backing where grab bars, shower curtain rods or shower doors will be. How to Clean Floors: Wood, Tile, Carpet and Everything Else, First-Timer’s Guide to Pouring a Concrete Patio. Space the bottom sheets 1/4 in. Allow the point to stick out the bottom. 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. Spread the thin-set over the tape. bags of powder that you mix with water. Cut drywall to fill in between the existing wall or ceiling and the cement board. The 1/2-in. These screws have a coating to resist corrosion, a special wide head with cutting flutes and hi-low threads for a strong grip. The 1/2-in. Use nails or screws as temporary spacers to create a 1/8-in. Remove any excess material before it hardens. Setting-type compound is stronger and more water-resistant than the type that hardens by drying. Score one side to cut the fiberglass mesh, then snap it like drywall. 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. All preferable to doing nothing. In this article, we’ll show you how to create a strong, durable and waterproof tile base around your bathtub using cement board. from your measurements before you mark the cement board for cutting. (Allow half a day to tear out the old tile and perhaps several more days to let damp wood dry out.) Following the manufacturer’s recommendations, mix the thin-set mortar adhesive with enough water to form a thick paste. Hold the sheet above the tub shoulder with 1/4-in. Well, I’m going to give you three different ways to seal the backerboard at the tub flange. Your email address will not be published. Place special 1-1/4 in. Mark the next sheet for cutting. 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. 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). Finally, leave extra clearance around each piece by deducting about 1/4 in. Cement board is a thin layer of mortar sandwiched between sheets of fiberglass mesh cloth. There are three basic foam insulation board products … (6.4 mm) gap between USG Durock™ Glass-Mat Tile Backerboard and tub surround. Spin the cutter while applying pressure to score a perfect circle. Add blocking and other framing details before hanging the cement board. hot-dipped galvanized roofing nails. Here are 13 tips to keep in mind when choosing bathroom tile. Complete DIY projects like a pro! Three different ways to treat the tub seam. Cover all of the corners, joints and seams, including the joint where drywall and cement board meet, with the fiberglass mesh tape. shims, and screw it in. It is 1/2" durock over 1" nominal thick plank. 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. You'll also need a roll of 2-in. (It's available at home centers.) So what do you do? B). Then score and break out the remainder using the procedures we showed in step 9. on center. The traditional method of installing ceramic tile called for setting it in a solid mortar bed. thick, weighs 45 to 60 lbs. Believe me, you want to avoid the knuckle-skinning task of trimming a little off. thick cement board spans studs spaced 16 in. Clamp a straightedge along the cutting line, and use it as a guide to score the cement board with a utility knife. Another option is to use some of the waterproof banding material that’s available with some of the sheet membrane systems. 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. The 1/2-in. cement board screws (see Fig. Shim low spots with strips of roofing felt stacked up to the right height or with thin strips of wood. More nothing. Use a single piece to avoid seams. Drill holes smaller than 1-1/2 in. Currently the right window is the same size as the left but we are widening it. The manufacturer dictates to use thinset between subfloor and cement board. wide fiberglass mesh cement board tape and a 25-lb. Cement board, technically called cementitious backer unit (CBU), is manufactured under different brand names. 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. If you can't find them at a home center, call tile specialty stores. Also, I wouldn’t worry about the two sides being different. You can also use regular blades, though they’ll wear out after a few cuts. When the prep work is done, start the rewarding job of hanging the cement board. Once you are done installing the cement board, here are some bathroom tile trends you’ll want to explore. Log in. You don't even have to let the thin-set dry. Then screw in a “cutter” screw where you want the circle to be scored, for example, 2 in. 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. spacers. Don't worry if the tile doesn't cover the joint between the cement board and the drywall. Set the completed sheet in place, spacing it above the tub shoulder with 1/4-in.
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