Chipboard floor upside down

[Handyman36]

I've just employed a bloke to lay a T & G chipboard floor for a flat conversion over a shop. Neatly stamped on top of every sheet is This side down.

Does this matter? More to the point, will the Building Regs people take exception? A floating floor - sound insulation and two layers of ply - will eventually be going over the chipboard.

This genius also nailed the boards down, instead of screwing as I asked, and must have crushed one of the burglar alarm wires, as that now doesn't work. But that's another story...

 

[pantsmachine]

I was speaking to a joiner mate of mine a month or so ago and he told me that Scottish building regs now state that chipboard floors MUST be glued and screwed. I don't see that laying the floor the wrong way up will amke any difference, maybe a bit weaker at the joints. Get him back to do it again at his expense.