Bathroom floor tiling on floor boards

[nottsrob184]

Hi all.
Sorry to be a bit dim but not had any experience on this.
Can i fix tiles directly to a wooden floor boarded bathroom?. I am worried about the floor flexing and cracking the grout between tiles letting water through.

 

[Richard C]

You’ve answered your own question; don't do it it'll be doomed to failure. Rip em up & start again with 18-25mm WBP or at least overboard with 12mm WBP; read the Tiling "sticky" & the archive posts but I'm sure others will be along to advise you.