Chip board floor

[smokie899]

hello guys. Doing a small ensuite floor tomorrow just under 3sqm. Went and had a look at it and the floor is spotless as it only had laminate on it before and very solid, but the chip board has a coat of something on it which is clear and has a very smooth finish.
I'm presuming its some kind of moisture barrier.

Normally I would just use backer board on chip board but this is a guy who buys, tarts up and sells house for a quick turnaround and ain't having it no matter what I tell him.
So what is this stuff and will the addy take to it.
Tiles are 300x300 ceramic, 2 part flexi addy & grout.

 

[Andy Allen]

Best to overboard with hardie.
But if needs must I would use bal single part fast flex and bal wide joint grout with GT1 admixture.

 

[smokie899]

Cheers Andy, but any ideas what the other layer on the board is.

 

[hmtiling]

Best to overboard with hardie.
But if needs must I would use bal single part fast flex and bal wide joint grout with GT1 admixture.

Yep, s2 and grout with additive here too if you've got a tight a*** customer

 

[LM]

If it's grey in colour it's more than likely a Weyroc board, the supposed to be weather resistant. I prime them with ARDEX P4 primer and then tile with a rubber crumb adhesive provided the floor is flat and solid, if not secure through to the joist P4, use a fibre reinforced leveller and then tile.

 

[smokie899]

This stuff is transparent and has been put on during manufacture.
Think I might just take an abrasive wheel to it just to key it then prime.
Cheers guys

 

[smokie899]

Found it. It's moisture resistant 22mm chipboard. It has a resin coat on it.
Found a few very old threads on here about it.
But still no mention of the wether the adhesive will take to the resin.

 

[Andy Allen]

Bal fast flex will pretty much stick to anything ....including your clothes, hands etc and it's a pig to get off.!!

 

[Time's Ran Out]

Whatever adhesive you use its going to crack along the joins! The minimum preparation is Bal crack mat or Ditra and that's only if it's a solid floor. As he's telling you what to do I wouldn't touch it - but that's just me!

 

[LM]

Ardex did the spec for my jobs

 

[White Room]

Hardie glued and screwed....

 

[AndY mac]

Take some pride in your work. Tell him to poke his 3m2.

 

[Spare Tool]

Fast flex is over £50 for 12.5kg...on line price anyway, work out nearly same price as hardi and a bag of tm tradeflex...same cost, proper job!!

 

[Flintstone]

Board it properly. Or ask him to ply it

 

[bcd-87]

Best to overboard with hardie.
But if needs must I would use bal single part fast flex and bal wide joint grout with GT1 admixture.

Same !!