advice for tiling on wooden bathroom floor

[Mark B]

Hello,

I've recently joined the forum and have read through as many of the posts concerning tiling onto wood floors as I can find.

I have been asked to tile a 4,5m2 wooden bathroom floor with 450x450 porcelain tiles and electric UFH. I'm fitting a new bathroom suite and will be lifting the existing chipboard floor to re-plumb underneath.

My question is what's going to be the best solution to minimise any height difference after removing the eisting 7mm lamimate flooring?

Having read all the posts I can find and speaking to the tile shop there seems to be a number of options,

1. Overply with 18mm WBP fixed at 300mm centres (approx height difference from existing FFL = 25mm)
2. Overboard with 6mm no-more-ply (or similar) glued and screwed (approx height difference from existing FFL = 13mm)

However, as I'll be able to replace the existing flooring, if I replace the existing chipboard floor with 25mm WBP ply and install edditional noggins as required can I then tile straight onto the new 25mm WBP?

Regards

Mark

 

[Gazzer]

I would go for the 25mm ply with extra noggins. Bal fast flex ( 2 part) and flexi grout.

 

[Mark B]

I would go for the 25mm ply with extra noggins. Bal fast flex ( 2 part) and flexi grout.

Sir Ramic - thanks

I was hoping that this option would be ok but didn't know if the effective floor construction had to be ideally >25mm. ie. existing +25mm WBP or existing +6mm no-more-ply or Hardi.

Mark.

 

[brian c]

I would go for the 25mm ply with extra noggins. Bal fast flex ( 2 part) and flexi grout.

im in agreement with sir ramic here.:stupid:

 

[grumpygrouter]

I'd go straight on to the 25mm ply with Ardex-flex 7001 and primed with Ardex P51. Cheaper than Fastflex and designed just for that very job!