Hey all! I'm hoping someone has an answer. We used regular morter to fill the seams between the hardi backer boards instead of thin set. (Building a shower stall) Now all the seams are a bit thicker than the board. We are getting ready to install the tile, but I am afraid that when we put the tile on the walls, they will be uneven, have gaps, crack, etc. Do we need to completely smooth the surface out before tiling or when we use the thin set to set the tiles on the wall, will we be able to level it out enough? BTW, we are using 6 inch tiles. Thanks for your input!
woops! Used regular mortar for seams instead of thin set?
- Thread starter izzy3jordan1
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Why not trim the seam back to the level of the board? Have you taped/sealed the board joints? I am trade here in the UK but I assume you’re aware this is a UK DIY forum? The terminology & materials you are specifying are somewhat different to standard practice over here! Is a “shower stall” more than one shower? Is it a commercial shower block in a sports club or something?
6” tiles are hardly going to be a challenge but the materials you specify are definitely not something I would use, you should at least be using a flexi adhesive over Hardibacker & maybe even a modified cement powder (it’s all there in the Hardi spec sheets). Are you saying you would normally use an unmodified or thinset mortar/screed to tile & grout?
6” tiles are hardly going to be a challenge but the materials you specify are definitely not something I would use, you should at least be using a flexi adhesive over Hardibacker & maybe even a modified cement powder (it’s all there in the Hardi spec sheets). Are you saying you would normally use an unmodified or thinset mortar/screed to tile & grout?
i have currenly just boxed my bath in and use backerboard onto onf the frame prior to tiling. I have got a waterproof flexible adhesive, to tile with. Can I fill the joints in of the backerboard or do you have to use thinset ?
thanks
thanks
What has this got to do with the OP's post 
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