Mark, We used some loft instalation boards to cover all the walls (These are well cheap too!) then just covered everything in thick underlay stuck with some strong spray glue and staples. Then on top of that we got this lush black fabric almost like a thin leather what cost 25 quid a roll (one roll is all we needed) and that pulled really tight over everything and stapeld it round the edges and round the edges we put some nice beading to cover up all the stapels!!

Gives it a great finish, it's cheap and havnt had no complaints of yet!!