Bathroom flooring HELP!!

[Smileysmile]

I have a new build house so the bathroom is not big. Its small infact but functional.
Here is my dilemma.

Bath and shower all replaced. Floor to ceiling tiled but few tiles I wasn't happy with had to be replaced (not the best tiler that I hired).
Neutral bone porcelain tiles. 60cm x 30cm.

Tiler had tiled onto the original 18mm chipboard floor so he left a 15mm or so under the bottom wall tiles. The odd tile sunk, grouting cracked. You knew it was going to happen, right? DOH!!

Call yourself a tiler? Well I never knew you shouldn't tile on chipboard etc. So I personally ripped all tiles up with the the chunks of chipboard attached. I replaced all the floor (had to again remove the bath) and replaced with 18mm chipboard.
I now have that gap of 15mm under bottom wall tiles.
I am reluctant on putting new tiles down 'cos of the height between the bathroom flooring (after additionally adding backerboard or ply down) and the landing carpet.

My question is: If I was to lay tiles down which would reduce the gap below the bottom wall tiles so would be a neater fit rather than vinyl (no skirting).
I understand BB would be better than ply but I have read and reread conflicting advice on what size boards to use. 6mm BB would be better then tiles layed on top as not to have much of a height to the landing carpet.

Lastly, If in the future the tiles needed to be removed then if one has to glue the BB to the chipboard flooring then wouldn't this cause problems? Or would the tiles be easily removed from only the BB?

Thanks in advance.

[jay]

not sure if im reading this right did you replace existing floor with chipboard

[mikethetile]

shame you didnt seek advice before replacing chipboard with chipboard

it would have been better to replace with ply as the chipboard floor was showing signs of deflection ie grout coming away and broken tiles

you can replace the floor with 18mm wbp ply and overboard with backer board as an ideal subtrate to tile to

[Smileysmile]

Thanks for replies.

Yes I replaced the chipboard with chipboard that you can get from builders yards. Tongue and grooved made especially for floors.

It is too much of a task to replace them. But I need advice with where to go from here?

[Sir Ramic]

I am assuming the floor you have laid is free from deflection ? ie no vertical "Bounce" ?
If so then a backer boards can be laid onto the chipboard and tiled over .
Not quite sure on how that will leave this gap you mention.

[Smileysmile]

Thanks. The gap should be fine as it was there because of the original floor tiles.
The existing floor is secured good.

But what about the height consisting of backerboard and tile adhesive/tiles compared to meeting up with landing carpet? Anybody reading this have this problem and IS IT really a problem?

Lastly as mentioned in my OP what if the tiles needed to be brought up in the future? I know what would happen if it was glued to chipboard.

[Sir Ramic]

Height issue to carpet easily got over by using carpet to tile trim.
As for removing tiles on backer boards, who really knows, It all depends on the strength of adhesive.

SmileySmile ....? Beachboys/ Brian Wilson fan ?

[Smileysmile]

Thanks Sir Ramic

I guessed their might be a trim strip to go across the door way. Don't want it looking hideously to high so I guess 6mm BB would be fine compared to ply?

Yes BIG fan of the BBYS/BW. Met him a few times. One backstage in 2002 and at a London convention in 1988

[heavytrevy]

6mm cement sheeting will be perfect.
btw u having mentioned any tanking?
extremley foolish to have a wooden floor without it.

trev

[Smileysmile]

Thansk Trev.

Tanking? What is this? Waterproofing?
The chipboard I have layed has a waterproof surface.
Can you explain more please

[heavytrevy]

yep waterproofing, sure the chipboard has that coating but not on the edges where its been cut to fit, chipboard swells horrendously and wiil pop tiles even with the cement sheeting on top.
grab some brush on waterproofin and apply after uve nailed and glued the cement sheeting down.
here is alot more detail, http://www.bsa.qld.gov.au/SiteCollec...d%20AS3740.pdf

If you follow this u will have no water issues

trev

[Smileysmile]

Any idea guys what kind of screws to use to screw backerboard into chipboard? I am going to have to have 20mm length screws. But chipboard is like weetabix lol