Bal Fastlex onto chipboard!?

[CCTiling]

Hi all

Just been out to quote a bathroom floor where the grout has started to crack. The customer did the job and he said that the tile suppliers said to him that it would be fine to tile straight onto the chipboard with fastflex. Not so sure myself but never fixed direct onto chipboard as always used ply then tiled. Is fastflex ok to use direct onto chipboard? Cheers Ross

 

[grumpygrouter]

Fastflex is probably the best stuff you can use directly onto chipboard (along with Ardex 7001) though BAL don't recommend tiling straight onto chipboard at all.

Was the grout used a flexible grout or is there a lot of "bounce" in the floor?

 

[CJ]

I'm with Grumps on this...........Fast flex is the most flexible of the Bal range of addys...............bet the grout was'nt :whatchutalkingabout

 

[DHTiling]

BAL say that fastflex is suitable for tiling onto chipboard..but i don't think that chipboard is stable enough to tile on to without an overlay of some sort...ply or backerboard etc....

check out the pdf for fastflex.... http://194.223.92.131/pdf/Technical...chnical Data Sheets/Bal_Flex_and_Fastflex.pdf

 

[Fred]

What sort of price do you pay for this product?

 

[wetdec]

Waterproof chipboard the green stuff for bathrooms contains wax. As a home warms up its possible for the waxes to release and so adhesive to pull away.

If you use an uncoupling membrane such as Durabase ci to prevent lateral cracking of your tiles and fix it with a BALL lino adhesive then you should be fine.


tilrt

 

[Perry]

Fastflex is flexible but sounds like the floors even more flexible bal will tell you the floor has to be stable but without over laying it it probably wont be unless its something like 40mm chipboard on 300 centres and steel joists which most of the chipboard floors I tile are and I still use a decoupling matting,10mm backer board for me imo the best way ete
and as wetdec points out the green stuff aint as good as the plain chipboard but i am not sure that Durabase ci would make the floor stable lol

 

[Fred]

Fastflex is flexible but sounds like the floors even more flexible bal will tell you the floor has to be stable but without over laying it it probably wont be unless its something like 40mm chipboard on 300 centres and steel joists which most of the chipboard floors I tile are and I still use a decoupling matting,10mm backer board for me imo the best way ete
and as wetdec points out the green stuff aint as good as the plain chipboard lol

Pete, what is this matting mate?

 

[wetdec]

Here Fred

http://www.tilersforums.com/tiling-forum/14597-when-do-i-use-decoupling-membrane.html

 

[Perry]

this is what i use Fred
Movement
Wetdec you a Pete as well ?

 

[Fred]

Thanks wetdec, good info. Could you us it on floorboards instead of 12mm ply?

 

[Perry]

Fred as wetdec says Now this only aplies to lateral movement thats movement accross the surface not vertical movement. eg the floor expands or contracts.

 

[CCTiling]

Fastflex is probably the best stuff you can use directly onto chipboard (along with Ardex 7001) though BAL don't recommend tiling straight onto chipboard at all.

Was the grout used a flexible grout or is there a lot of "bounce" in the floor?

Porcelain tiles, addy and grout were all supplied by the tile supplier so they should have known to use flexi grout. The customer is concerned about the height difference from bathroom to hall. If I quoted 6mm hardibacker with membrane, is this sufficient?

 

[wetdec]

Did you look at Plastic Ply, its out there, its new, its tested & it works


..

 

[Perry]

wetdec it looks like a decoulping is it ? ete