tile question

[kallstrom_74]

I was thinking about laying tiles in my bathroom..and I have 22 mm chipboard as the base for the floor and chipboard walls..it also seems to be 22 mm chipboard there too! The tile seller said that it wasn't possible to lay tiles on that..why wouldn't it work? He said that I had to put down a gypsum board first...why..is it because the chipboard can move? Or what is it?

 

[ama]

As mentioned, search the forum and you'll find more, but in short: particle board expands/contracts with moisture and heat (=bathroom), if you place tiles on it, the joints will crack and the tiles will fall off.

/ama

 

[Henke]

Is renovation plasterboard (6 mm) sufficient on the walls or is a 13 mm plasterboard required? Have cc 40 on the studs and 15 mm chipboard.

 

[Henke]

Sounds good, although 6 mm gypsum is more expensive than 13 mm. Is it enough to screw the gypsum in place, or should it also be glued?

 

[KarlXII]

And why not go with 13mm?

 

[Strisak]

There may be flex in the floor even though you have 22mm particleboard + 6mm gypsum. Check how the floor framing is done and reinforce if necessary.