My problem is that between some of the cement boards are gaps due to the walls not being entirely straight. 2. Thanks You can paint it if you'd like. If El Dorado stone says it is okay to install on hardibacker for exterior use, then you are fine. You don't need hardibacker in those areas. Can you use corner bead on Cementboard? - AskingLot.com How do you fill gaps in cement board? This is easier to achieve with 1/2" or 3/8" thick marble tile than with eased edge ceramic tile. It is the material that you use underneath the backer board to . Replace any loose, warped or uneven sections of the floor. HardieBacker Cement Boards Installation Instructions • Never allow all four corners of boards to meet at one point. The Hardibacker will be fine to tile straight onto. My problem is that between some of the cement boards are gaps due to the walls not being entirely straight. You can paint it if you'd like. HardieBacker Boards Installation HardieBacker boards can be easily cut with the carbide tipped scoring knife. In terms of a suitable substrate, you should refer to manufacturers instructions. You need to apply the tape while the thinset is still wet. If you attempt this, 2 things might happen: 1. Begin by applying a glue to the back of the siding and pressing it completely. Hardiebacker, Permabase, and others the seams between the board need to be treated with 2-inch alkali resistant mesh tape. For wall installation, if leaving 1/8" gap between hardie backer boards, would it be better to 1. fill then gap with thinset 2. Embed HardieBacker® boards with a sliding motion firmly and evenly in the wet tile adhesive. Step 1: Level Out the Flooring. Hardi Backer board warnings? - DoItYourself.com Community Forums Hardi Backer board warnings? - DoItYourself.com Community Forums 2. What is my best option to fill those in before tiling? Before installing the backer board in the shower pan, make sure to level and screed (smooth) out any imperfections in the flooring. That will give a much sturdier backing for your tile. The boards can be easily scored and snapped and necessary cuts implemented. Mold resistant drywall will suffice. Step 1 - Fill the Gaps. cabinet. If larger you might consider filling the gap with some PL premium caulk,,,,, let that dry and then do the mud and tape. Taping Hardibacker seams - Fine Homebuilding Taping Hardibacker seams - Fine Homebuilding 2 coats. Jul 29, 2018 at 23:27. FWIW, HardieBacker is a fiber-cement board, and is one that cannot be embedded in the shower pan. If the boards are installed with no gap, there is a good chance that cracks will appear immediately above the backer board seam. Can you tile straight onto Hardibacker? can i just fill this little gap with thinset when i cement the hardie board down or do i need to cut a little sliver of … Caulking hardieboard joints [Archive] - Ceramic Tile ... - John Bridge How big of a gap in hardie board can I fill with thinset? I'm going to use mesh and mastic for the corner seam […] Skip to content . It should go directly over the thinset and on to the backer board on the edges. How do you fill the gap between brick and siding? The Rev. Hardiebacker only screwed to chipboard. No adhesive Mesh Tape: Don't skip this step | www.diytileguy.com What thickness does Hardibacker come in? - AskingLot.com Determine layout of HardieBacker cement board. For an excessive gap a Z type flashing might be appropriate: Be aware that a silicone sealant joint should be deeper than it is tall so it forms an hour glass shape in section allowing the silicone to stretch without losing adhesion. So, it depends on what CBU you used on the walls. • We recommend an 1/8 in gap between board edges. How to Tape Backerboard Joints | DoItYourself.com • Keep sheet edges 1/8 in back from walls and cabinet bases. • Do not align HardieBacker cement board with plywood joints. Do I need to put Thinset under Hardibacker? - FindAnyAnswer.com Tile Backerboard - James Hardie The cement basis of the product dictates the use of thin-set mortar to properly repair cracks or holes. If you need to make circular cuts, just score the hole, mark the weak point in the centre and tap it with a hammer. Installing Kitchen Backsplash. Gap between counter and Dry wall. The cement basis of the product dictates the use of thin-set mortar to properly repair cracks or holes. 2 | Determine layout of HardieBacker cement board • Stagger all HardieBacker cement board joints. Begin by applying a glue to the back of the siding and pressing it completely. Make certain the subfloor has a clean and flat surface. If there is a good size gap, any thing larger then 3/16 between the two, I fill it the night before with a drier mortar mix first then tape it putting barely any mortar over the tape almost just embedding the tape in the fill mortar running over it with a dry knife.. How to Fix the Gap between the Brick Wall and the Siding Step 1 - Glue. Once the glue has dried, typically 24 to 48 hours, you will need to screw or nail in the siding so that it stays. You could put a piece of that wood in their to match the other wood if there is any. 1. Depending on the thickness of your tile, you should be able to add a layer of Hardiebacker (probably 1/2 inch). It's hard to say what thickness of Hardiebacker you should use without knowing the size of the gap and the thickness of the tile. Step 2 - Screw In Siding. • Use minimum 1/2" exterior grade plywood or equivalent, positioned across the wood. That wood you added becomes part of the framing. - paul Jul 29, 2018 at 23:27 Add a comment How do you install HardieBacker flooring on the floor? Brian O'Brien, pastor of St. Francis Xavier, said his church didn't hesitate to answer the call for help when the congregation learned Afghan refugees would be resettling in Stillwater. Thanks Work thinset onto the mesh tape. Mold resistant drywall will suffice. • Keep sheet edges 1/8 in back from walls and cabinet bases. What is my best option to fill those in before tiling? If you insist, use a strip of wood to cover the gap between such dissimilar materials. Then a coat of thinset gets flat troweled over the seam. Quick Answer: How To Professionally Fill Gaps In Hardiplank Siding? This allows the surface of all the boards to move as a single unit when it is stressed. Spacing Hardi Board - JLC-Online Forums i left a 1/8" to 1/4" space around the perimeter and between the boards like the instruction said, but in the door frame where i cut the hardwood floor up, there is a gap about 1-1.5" between the hardie board and the hardwood. For a gap that large, just add the CBU. HardieBacker Cement Boards Installation Instructions Step 3 - More Thinset kcox. gwhitmore 03-22-2014, 12:50 PM Thanks again Richard. I have a question for the forum that I have mulled over for some time and not been able to resolve: What good does spacing Hardi-Board edges from one-another do if you then follow up the installation by filling the gapped edges with thinset and overlay with fiberglass tape, assuming the required . Add horizontal backing as well between the studs, assuming the tile is not going all the way to the ceiling plate. Step 1: For holes larger than 1/2-inch in diameter, use a carton knife or carbide-tipped tool to cut a V-shaped groove behind the edges of hole. How to Install Hardiebacker Board in Shower Pan Gaps of minimum 3mm between the wall edges and the floor should be filled with adequate moisture resistant sealant. The first step in installing Hardiebacker to the subfloor is to make sure you have a structurally sound subfloor that is not damaged, loose, warped, uneven, and that it has a clean and flat surface. Use cement or silicone to fill gaps between backer board? Most of the joint above and below the wider section is 32 7/8" from the other shower/tub wall. This is probably because at one time the installation instructions for Hardibacker called for 3/32" inch of thinset underneath.Currently, Hardibacker calls for either 1/4" thinset, or 5/32" mastic underneath.I always use 1/4" trowel for all my underlayment and 3/8" for almost all my tile. How to Fill Gaps Between Hardibacker and Drywall? The thinset will shrink and you'll lose bond to the tile. 4. Step 2 - Apply the Tape Once you have filled the gap with thinset, apply fiberglass tape. Floor Installation Then a coat of thinset gets flat troweled over the seam. Use cement or silicone to fill gaps between backer board? 1. Home improvement Ron Hazelton shows how to patch and repair holes in ceramic tile. 01-10-2001, 11:48 PM. 1 You don't need hardibacker in those areas. I'm not comfortable with anything over 1/2" thick. Using 1/2″ Hardibacker for the shower transitioning into 1/2″ greenboard outside the shower. Screw the HardieBacker into the floor, using 1¼-inch backerboard screws and using one screw every 8 inches. The 1/4" gap referred to applies to the perimeter of a room and not each board however each board should be gapped slightly then each gap covered with alkali-resistant mesh joint tape and then filled and bedded with thinset mortar. How to Fill Gaps Between Hardibacker and Drywall? PRO Apply a gap filling bed of tile adhesive to the subfloor using a 6mm notched trowel. then just caulk the edge neatly. The reason for the gap is so that it can be filled with thinset mortar which tends to edge-glue neighboring boards. Tape the seam with alkaline resistant mesh tape (either right after thinsetting the gap or wait till it dried) 3. be careful with the mud and grout so it doesnt go past the edge of the tile. Apply red Gard or hydroban on the entire wall. 5. Do not align with subfloor joints. The cement basis of the product dictates the use of thin-set mortar to properly repair cracks or holes. When you install backer board, you will notice that the edges are tapered, which allows the boards to meet and forms a small gap. The gaps are at most 1 inch thick. Apply some thinset to the gap. Once the glue has dried, typically 24 to 48 hours, you will need to screw or nail in the siding so that it stays. To see more DIY videos, visit http://www.ronhazelton.com.Transcript: Patch. Mesh Tape: Don't skip this step | www.diytileguy.com Then the gap increases by 1/4 inch for about 12 inches. The boards should be scored with a straight edge and pulled upwards. tile - what to do where hardibacker meets drywall? - Home Improvement ... Spacing Hardi Board - JLC-Online Forums The chosen non-flexible tile adhesive should be applied to the subfloor when the 6mm HardieBacker floor board should be slowly embed into the wet adhesive . Ensure cabinets are level and secure. 1. Offset the interior screws so they are staggered with the outer screws, and make sure no screws are closer than two inches from the edge. Space between plywood supports is not to exceed 16" on center. • Never allow all four corners of boards to meet at one point. Quick Answer: How To Professionally Fill Gaps In Hardiplank Siding? 9 bronze badges. The purpose isn't to make the board stick, it . Spacing Hardi Board. . Any ideas to fill in a gap for outdoor BBQ between the grill jacket and ... There are 'true' cement boards that CAN be embedded in the shower pan mudbed, and fiber-cement boards that must NOT be embedded in it. Pull out a big enough piece of tape to cover the entire gap, then press the tape down on the gap. Step 1: For holes larger than 1/2-inch in diameter, use a carton knife or carbide-tipped tool to cut a V-shaped groove behind the edges of hole. How to fill a gap between Hardibacker and drywall seam Step 2 - Screw In Siding. . Do not align with subfloor joints. How to Fix the Gap between the Brick Wall and the Siding. By the time you add your thinset and tile, you should makeup the gap. We call the adhesive layer a gap filling bed of adhesive, and it can be flexible or non-flexible. How to Tape Backerboard Joints | DoItYourself.com Beside above, how do you fill gaps in cement board? • Leave a 3mm gap between floor and wall edges and fill the joints with a suitable fire mastic or fire cement. Click to see full answer Similarly, it is asked, how much thinset do you put under Hardibacker? Another thing you should have considered was deflection. - paul. Then attach your cement board: it should have a wooden lip all the way around to attach to, with that wood secured to the studs.