Remove the tile and prepare the wall according to the corresponding instructions above or tile over the existing tile.
Tiling on chipboard wall.
When installing over chipboard you need to install concrete board over the top of it before tile can be installed.
It was a casing in the kitchen that i made to house all the pipework and venting to my boiler.
Used a waterproof adhesive tiled it and never had a problem with it in over ten years.
I hve tiled on chipboard in my own home.
If tiling on existing walls apply and smooth general patch to bring the surface into flatness compliance prior to tiling.
The wall surface should be installed or corrected so that there are no deviations greater than in 10 feet.
Tips for tiling a wall 1.
If possible you should always use concrete board underlayments rather than plywood.
Strengthening the substrate will decrease the amount of movement associated with timber and non tongue and groove floorboards and chipboard.
Repair any loose or cracked tiles.
Step 3 spread no sag mastic adhesive along the bottom of the wall with your notched adhesive trowel covering everything from the floor up past the horizontal line.
There s nothing at all you can do about chipboards hatred of water for this reason don t use chip in a wet room or any constantly wet area.
To do so make sure all of the tiles are intact and secure.
For shower walls and tub surrounds install wonderboard lite 1 4 backerboard.
Water damages chipboard once chipboard gets wet it swells and falls apart which will lift your tiles.
If existing tiles are beyond repair remove the tile and install a piece of wallboard in its place.
For wall installations plywood is overkill beneath the concrete or fiber board which is designed in five eighths inch material for wall settings.
This will help adhere it to the chipboard and keep it from moving.
Draw a vertical line up the middle of the wall from floor to ceiling intersecting the horizontal line.
Newer green chipboard is used to help with this but still isn t perfect.
Mix up some thinset and apply it to the bottom of the concrete board.
Hang a batten board to prevent tile slippage a batten board helps you start your bottom most course or row of tiles.
Use our guide on strengthening a wooden floor for tiling to do this.
The preferred method for tile installations is to use a sheet of underlayment.
You will be able to see the lines through the mastic.
Team of 99 aug 8 2010.
You can do this either by covering with a 10mm layer of weberfloor flex 6mm tile backer board or 15mm plywood.