Tililng onto chip

[N. Thornton]

Hi

I've had some problems tiling onto chipboard. I'm using white cement adhesive & grout. Problem is the chip swells, presumably due to absorbing water from the wet cement, ruining the job. I cant see how one could stick the tiles down without using something wet. And even if I sealed the chip first, the water all has to go somewhere... and I could only seal under that tile, not the lot.

So how do I do this one?

Thanks, NT

[Ian Stirling]

Remove chipboard. Replace with waterproof backing of some sort.

[John Rumm]

If you can, then prime the chip with neat PVA first and let it dry. Also try using a standalone adhesive rather than a "fix 'n' grout" since these can be a bit on the wet side.

[Kris]

I used a few tubes of silicone sealant, keeping it away from the edges and grouting as normal.

Chris

[N. Thornton]

thanks for that Lee. In this case it has to go on quite thick though... I'll try silicone and sand, the sand to increase rigidity.

Regards, NT