Dot And Dab - Will It Have To Come Up?

[jaycy99]

Are we talking plywood on top of chipboard?

No, it's a Victorian house and its plywood on top of the existing floorboards.

 

[jaycy99]

Hi,
Thanks for all replies so far .

I'm not worried about the underfloor - well screwed down ply on top of well screwed and nailed existing floorboards. It's the fact that the tiles the tiles are not well supported that worries me. So I was asking if there is any possibility at all of rescuing the existing tiling without taking it up.

I did phone Mapei for some advice and they mentioned (but not recommended) the possibility of injecting an epoxy resin type adhesive between the not yet grouted tiles to bridge the gap between the flooring and the back of the tiles. This would at least provide support for all of the tile edges.

If the tiles have to come up and they come up undamaged , is there any easy way to clean them up for reuse?


JC

 

[Old Mod]

For me, if u start injecting products between the tiles you're possibly going to make things worse.
What I mean is that there's still no absolute gaurantee it'll work and resin will definitely make everything unusable again, tiles and substrate (ply)
It's a pretty safe bet that as it is you are going to face continual problems with breaking and lifting tiles.
So personally I think the decision is either do u try and bodge it and hope it lasts.
Or do you just wipe your mouth and put it right and not be bothered by it again!

What is the thickness of the ply?

As far as using the old tiles, it will be possible if they lift without breaking.
You would probably find that u would have to grind the adhesive on the backs off!
It's a nasty, dusty, and labourious job, but can be done.

 

[StevieBoy]

Hi,
Thanks for all replies so far .

I'm not worried about the underfloor - well screwed down ply on top of well screwed and nailed existing floorboards. It's the fact that the tiles the tiles are not well supported that worries me. So I was asking if there is any possibility at all of rescuing the existing tiling without taking it up.

I did phone Mapei for some advice and they mentioned (but not recommended) the possibility of injecting an epoxy resin type adhesive between the not yet grouted tiles to bridge the gap between the flooring and the back of the tiles. This would at least provide support for all of the tile edges.

If the tiles have to come up and they come up undamaged , is there any easy way to clean them up for reuse?


JC

I'm with 3-fall on this one, you don't want to be injecting stuff under the tiles etc, at least if you take them up you will have peace of mind if they are then laid properly.

It would depend how long they have been down as to how easy the adhesive comes off the back of them. If they have been done recently, you may be lucky and be able to remove the adhesive with some elbow grease and a very sharp scraper.

Good Luck!

 

[jaycy99]

Hi all and thanks so far,

Might have been wrong about dot and dab - I've taken up a couple of tiles to get at the broken one and rather than dot and dab it looks like "paste all of the tile except for the edges and corners" if that makes sense.

I don't suppose it makes any difference to the advice so far but here's a couple of pictures.......

Btw, they weren't too difficult to get up and most of the adhesive was left stuck to the floor.

 

[StevieBoy]

No, I think the floor has been pasted and then the tile laid on top because if the tile had been pasted and stuck to the floor, the adhesive would have stuck to the tile not the floor.

Either way, get that adhesive up, prime it with SBR then tile it with 2 part making sure you back skim the tiles.

Then you will be ok.