Hi everyone. I have just removed my corner shower and tiles in order to refurb. The tiles came off fine for most of the wall with no damage to the plaster but in the shower area, the plaster and what looks like a base render is loose on the wall. It looks like someone has made some sort of bodge in the past with a piece of plasterboard - hence the diagonal line in the plaster (see pic). the plaster was also a bit damp due to a dodgy previous installation. I'm guessing that the best solution is to cover the entire wall in backerboard ready for re-tiling but I am not sure what to do about the loose plaster/render. I reckon I could knock most of it off easily but would rather not. Is there a way of securing the existing plaster enough to be able to board over it or is it case of taking it all back to the brick work? Cheers!
hi, if you want to ensure it will last, i would hack any loose backing coat off, re-render and then use hardibacker board prior to tiling in any wet areas.
Only diy here but have remedied same problem myself; Remove all loose render and plaster, If it sounds hollow when tapped, remove it. Go back to secure and sound render If the whole lot comes off, can seem daunting but do the job once and do it properly Not worth risking fixing tile backer and tiles to loose substrate - it's just false economy and may be a problem in the future Brush off all dust and loose material PVA wall with 1-5 water mix, let dry. Second coat PVA, semi dry then skim over with bonding plaster - lovely stuff, dirt cheap, long working time, good depth application in 1 hit Take into account finished levels with any remaining plastered sections, then depths of backer board, tiles and adhesive Get bonding plaster nice and level, doesn't need to be totally perfect as backer boards will cover Allow to fully dry, screw on backer boards, tape and fill joints if you really want to, ready for tiling It's a bit suspicious how clean those tiles have come off that plaster - very little adhesive remaining and little damage to plaster - they were basically waiting to fall off ! Good luck with this project
Thanks guys for your replies. Yes, it looks like I will have to go for it. just one further question about the backerboard, You say screw it on, does that require wall plugs or are the screws designed to tap straight into masonry?
Thanks. Yes, those tiles were just hanging on I think which I originally saw as a bonus - not so sure now.
I know that the tile board manufacturers recommended using their own screws - which of course are expensive ! Not sure if the screws are stainless maybe so won't rust ? Don't know, not bothered myself, just used single thread wood screws and red plugs, pilot hole boards first Not saying this is ok, just the way I did my shower and all rock solid after probably 8 years at least
Hi, Hardibacker do some videos on their staff fitting it on their site to a stud wall, but in your case you could use dry wall adhesive and some stainless screws for belt and braces.
I would love to skim it but unfortunately I can't plaster. I've tried it but ended up with more on my shoes than the wall. Could probably cope with the bonding though so might give it a go. Thanks for the replies so far.
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