Ignoring the other two who are having a spat, yes you can but only if the wood is secure and not liable to any flexing. By cladding do you mean T&G paneling? If so, then I would so you're better off ripping of the cladding as it would be simpler to tile onto the wall itself.
but my point is when joining a group / forum you should look to find waht the "rules" are obviously the poster didnt rule 6 does say not to shout
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