Floor tiles on walls and other advice needed please

[DHTiling]

Thanks for all the tips and suggestions.

I'm on a tight budget so I'd prefer to tile directly onto the chipboard because cement board and another load of adhesive will make quite a difference to the overall cost. The chipboard is screwed down every 300mm already. Would this be suitable for tiling directly onto the chipboard:

If the budget is too tight to not do it properly ,then the option to not tile is there.. We can only advise the correct way to do it and tiling directly to chipboard isn't an option i would consider..

 

[Rich]

I couldn't agree more with Dave. If you can not afford to do the prep then you will just be throwing money away as the tiles are very likely to fail. Chipboard is not a suitable substrate to tile onto with any adhesive. Have you thought about using another covering for the floor? If you are adamant on using tile then the correct preparation must be carried out if you want the installation to last any length of time.

 

[slartibartfast]

Thanks again for the replies. I'm not trying to go against anyones advice, I just want to fully understand why it must be done a certain way. Now I understand that I can't tile onto chipboard under any circumstances I will discount that option.

I was originally thinking I'd tile the walls and then use lino on the floor but as the tiles were only £5sq.m and are floor tiles I thought I might as well use them on the floor too. If money was no object I would use the very best materials, do everything by the book and probably spend quite a bit more than £5sq.m on the tile. In fact I probably wouldn't be doing it myself if money was no object ;-) I'm just trying to understand the best technique weighing everything up. There's more than one way to skin a cat so I just wondered if there were any options other than to use more boards over the floor.

I'm not keen on overboarding with 15mm plywood as the build up of thickness would mean a step up into the room so it looks like cement board is the way to go. Just wish I'd asked sooner, I could have laid the floor in plywood to start with and saved myself this bother!

I'm struggling to get the old paint off the walls. Sanding is taking ages and I've also tried scraping it off with an old chisel. How would a professional do it?

 

[DHTiling]

If the chipboard is deflection free, then over board with Hardibacker 250(6mm thick).. the build up is minimal and you have a perfect substrate to tile to..

 

[slartibartfast]

So, I'm going to use 6mm cement boards stuck to the chipboard with keraflex maxi (I can't get normal keraflex near me), then stick the tiles to the cement boards with keraflex maxi. I will also use keraflex maxi on the walls.

Does that sound ok?

Do I need to seal any of the surfaces with pva first? (bare plasterboard, chipboard?)

I have now managed to get the paint off the walls, I found the best thing for getting the paint off was a "heavy duty stripper" from B&Q. It is a 4" blade with a long handle that slices the paint off the walls. I found it was a bit too sharp to start with but after lightly scuffing the blade with sand paper it was fine. I managed to clear about 5sq.m in a couple of hours 🙂

Should I scratch the surface of the walls to help the adhesive grip?


Thanks again for all the replies.

 

[White Room]

Don't use pva at all..