Help!: porcelain tiles onto a wooden floors

[Fusion Tiling]

Evening All

I am about to fit porcelain tiles onto a wooden floor.Not floor boards but wooden sheets,
can you recommend the best type of adhesives and also any prep work required.

Thanks in advance

[GirlRacerRed]

how thick are the boards you're tiling on to? and what is the substrate exactly? what kind of boards - mdf, chipboard, plywood.....

[diamondtiling]

Lots more info required, size of tiles. whats under the boards etc, the prep work is crucial here and may be a lot more than you are expecting.

[Phil Hobson]

As above, more info wooden sheets? what type? eg. exterior ply 15mm min (good) chipboard of any kind ( not good)

[Fusion Tiling]

It looked like chipboard,but i could be wrong.The tiles are approx 450 x 300.

[Scott]

Is there any deflection in the floor?

[aph257]

take it up, put noggins in, lay 18mm or 25mm ply, then tile with a SPF.

[tfs]

check for any bounce in the floor, if its floating then tiling may not be the best choice.

If the chipboard is pretty strong then oversheet with ply screwed at 100mm centres. If the floor could be better and its laid over joists you can lift the floor and reinforce by putting in additional noggins. Use a good flexible adhesive such as keraquick with or without the latex admix. For a slow setting adhesive keraflex maxi is a good choice.

If the tiles are pollished they may need to be sealed. Be sure to use a flexible grout that can be used for the size of grout joints that you intend to use.