Is chipboard so bad???

[ag1975]

Quick question, is chipboard that bad a floor substrate to tile on? I'll be doing someone's en suite floor in a couple of weeks and they have chipboard down at the moment. I would like to put ply or backerboard over it but I think it'll raise the floor level higher than that of the bedrooms. Other than taking the chipboard up is there any other way around this?

 

[Time's Ran Out]

No....

 

[ag1975]

Thanks timeless john lol

 

[prceramics]

If it was defection free you could use ditra but still not ideal plus backerboard is only 6mm thick

 

[charlie1]

You could trim the joists to allow, I would seek advice before doing this but that's the only other way!

 

[ag1975]

charlie1, don't fancy doing that lol cheers anyway.

prceramics, the floors pretty straight and pretty stable. How thick is the adhesive and ditra likely to be if I use it? I know you've got the adhesive, then the ditra, more adhesive and tile...do you know the minimum thickness I could get away with? Cheers.

 

[DHTiling]

charlie1, don't fancy doing that lol cheers anyway.

prceramics, the floors pretty straight and pretty stable. How thick is the adhesive and ditra likely to be if I use it? I know you've got the adhesive, then the ditra, more adhesive and tile...do you know the minimum thickness I could get away with? Cheers.

How is chipboard stable ?

 

[kilty55]

were talking 6mm here,fit a threshold bar and use cement sheet job done

 

[ag1975]

How is chipboard stable ?

So you wouldnt go with chipboard then? When I said stable I meant it was solid.

 

[DHTiling]

Nah. Deffo overboard. IMHO cement board is perfect. Hardi 250 would be my choice if the floor is solid deflection wise.

 

[kilty55]

no i wouldnt go with chipboard as everyone else has said as well

 

[prceramics]

ditra is 3mm cement board is 6 for the 3mm difference I would go with the cement board like has been said get a nice threshold bar, sorted

 

[AliGage]

You could trim the joists to allow

Sorry, and really don't want to cause an arguement but i would not suggest this at all. Joists are installed/used to a particular grade, standard and dimension for a reason. Much the same as there's standards for what weight you can put on a wall when tiling, there's standards and regulations for sufficient support from joists.

Take the chipboard up, replace with WBP ply, 18mm in thickness, overboard with 6mm cementboard as suggested and tile. This will be around an 8-10mm height difference. No biggy, but as an en-suite adjoining a bedroom that is presumeably carpeted i wouldn't expect this method would bring the floor of your en-suite abover carpet and underlay.

 

[ag1975]

Sorry, and really don't want to cause an arguement but i would not suggest this at all. Joists are installed/used to a particular grade, standard and dimension for a reason. Much the same as there's standards for what weight you can put on a wall when tiling, there's standards and regulations for sufficient support from joists.

Take the chipboard up, replace with WBP ply, 18mm in thickness, overboard with 6mm cementboard as suggested and tile. This will be around an 8-10mm height difference. No biggy, but as an en-suite adjoining a bedroom that is presumeably carpeted i wouldn't expect this method would bring the floor of your en-suite abover carpet and underlay.

No carpet, wooden flooring in the bedroom.

Question for the forum, what's more time consuming, laying ditra or backerboard? Also, the area to be tiled is small, 3 m2 max and around a corner, so would the chipboard be ok leave?

 

[trevortine]

I replaced yet another floor couple weeks back that had been tiled straight onto chipboard. Even the fact that elastromatic adhesive was used there were still cracks on tiles. All removed, 6mm hardie glued and screwed and retiled, guaranteed! We can only give you good advice.