Discuss Old plaster came away, render looks solid and flat what do i need to seal it with prior to tiling? in the DIY Tiling Forum area at TilersForums. The USA and UK Tiling Forum (Also now Aus, Canada, ROI, and more)
Hi All,
Have just started removing the tiles in an old bathroom and the plaster is coming off with the old tiles but the render remains in tact and in decent condition, the surface appears to be solid, dry and flat.
Do I need to apply a primer prior to tiling? is a fairly wet room so don't want to make any errors in preparation but also on a fairly tight budget.
Added a photo of the area.
Thanks in advance for any advise.
Paul
Remove all plaster down to render. Brush or vacuum down, seal with an acrylic primer or SBR and then tank if required
Think you're right doesn't look like sand and cement to me
Yes that’s just a scratch coat.
So who does what on this surface?
Yes that’s just a scratch coat.
So who does what on this surface?
According to a lot of adhesive manufacturer's you can't tile this as it the the first part of a 2 part system.
Depends on what is going on it. Skim it, overboard, so many choices!
yeah it could be a first skim of plaster, ideally wanted to seal it then tile straight onto it, would have been there years.
Regardless of how long it's been there you can't tile onto bonding.
so am I better applying a thin top coat to it before plastering or do I need to remove it all and board, assuming the 2nd one is the most costly
It's often easier to overboard, you then have a perfectly flat and plumb surface.
Ok ive made the decision to remove all the bonding or first skim (whatever its best know as) and go back to the brickwork. Ive done a fair bit of plasterboarding but never aquaboarding and to me this looks an expensive option and could be tricky to do around the window area so thinking it might be cheaper to plasterboard and then tank the area around bath/shower.
A good option. This way you can ensure levels and is actually the most cost effective way
Ive never tanked an area before.does it consist of taping the plasterboard joints and then painting the area with a waterproof sealer?
Ive never tanked an area before.does it consist of taping the plasterboard joints and then painting the area with a waterproof sealer?
Pretty much yes. A good kit for DIY use is Mapei Mapegum WPS which is widely available all over the place. Good demo videos on YouTube
Reply to Old plaster came away, render looks solid and flat what do i need to seal it with prior to tiling? in the DIY Tiling Forum area at TilersForums.com
Or checkout our tile courses and training forum or the Tile Blog / Latest Blog Posts
Please note that this thread is old so replying to it may not get a response. You'd be best posting a new thread with a good 4 or 5 word title.
