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Discuss No more ply and joints in the Canada Tile Advice area at TilersForums.com.
why would you butt up joints in between studs?...end of one board should be halfway onto a stud, no guessing about it, if end of boards aren't fixed to a stud it most definitely is a weak point.I use no more ply on floors and glue the joints as per instructions.
No more ply website has a pretty fool proof guide to wall installation with 12mm.
The glue is strong but if the joint between two boards falls in between two studs it could be a weak point I guess but to crack porcelain tiles, I'm not sure. My guess is there's something else at fault too. poor fixing methods or an unsuitable adhesive
on the few occasions I have used NMP John, I've always taped the joints regardless, granted, I can't recall an instance that I've used a backer board on a solid masonry wall without using mechanical fixings alongside d&d,,,I'd still tape the joints though.Just to confirm in this issue - tiles are ceramic, NMP is fixed to studs on 3 walls, but outside wall where cracks on 3 tiles at 800mm high is a solid wall - so I assume dot and dab support.
My opinion is joins not supported fully and there must be movement/shrinkage in the boards. I suggested this product should have been taped but Tile Giant have said no and await inspection by 'others'.
The problem I see is this is an installation by a non tiler and although the tradesman has followed instruction there is a problem. But to charge to repair a tile that has been on for just over a month and blame the tile quality is wrong.
It's been good to read the replies from all who have used NMP - thanks!
I've never used it and never will...... not whilst the are superior products out there!
Reply to No more ply and joints in the Canada Tile Advice area at TilersForums.com