Can I "dot & dab" a tile

[padstar]

I had to fix a shower fitting leak which involved removing a tile and the plasterboard it was bonded to. The plasterboard has been dot and dabbed to the blockwork wall behind.

Do I need to replace the plasterboard and then tile to it or can I install the tile directly to the blockwork with thick adhesive blobs? I know its a cowboy question but just need a quick fix that will last.

 

[Deleted member 292770]

either. In that instance most would bond the tile direct to the block. keep the adhesive away from the pipe and fitting in case it needs to come back off.

 

[opps]

You can but the void behind creates weak points. In reality it is only an issue if you screw through the tile and over tighten the screw.

I would recommend that you apply SBR to the block work though as a primer, and use a cement based (power) adhesive rather than the stuff in tubs.

 

[Wayners]

Those blocks need a board of some sort over.
Proper backing board will be best but plasterboard will be fine.
Set some screws in first to act as packers so board sits at corret height before sticking. I just make hole with screwdriver and push in plug as blocks are so soft.