Gas leaks - slating carpet fitters/carpenters - late night gas escape - ACS / apprentice stuff 

I'm going to throw in some defence of carpet fitters here(not all of them as some of them are bell ends, but you get that in every profession) Any fitter I know most definitely would not bang nails in loose floorboards as we don't know what's underneath, more than likely here the customer banged them in when the carpet fitter said no, but your customer blamed them anyway so as not to look a pratt, sometimes the story given off the customer is different from what actually happened. The nails supplied to us for gripper rods, door plates etc are never long enough to go through the floorboards.

Did you cut a 300x300 hatch?

Carpet fitters, kitchen fitters I hate them they love to box things in and nail gas pipes!!