A bit of advice needed please - my floor has collapsed in my en-suite shower room due to a leak and now needs to be replaced. I'm in the process of trying to contract someone to the job but need a heads up in what the job should entail. Please educate me on the removal of the floor and refitting to tensure it is fully level and secured to the floor. In particular I want the know the industry standard of laying the floor whether it is to be screwed, nailed and intervals it is to be fixed at. Thank you.