Hi there, have finally decided to reboard a badly artexed 1950's ex council house.It was originally pre-cast reinforced concrete so has some steelwork in places where there would normally be wooden joists:
1.What is the best plasterboard to use, 9mm 0r 12.5mm with or without tapered edges?
2.How do I locate the wood to fix to, would I have to lift floorboards upstairs?(bearing in mind that when central heating system was installed 2/3 years ago flexible plastic piping was used as couldn't drill through steelwork and I don't want to put a hole in the piping).
I have a plasterer coming to skim my finished efforts and will possibly be able to get his ideas on the subject, but I would like as many opinions as possible.