first time on this forum but reading peoples subjects it seems there are some very skilled tradesmen giving advice,im currently going to lay 35square metres of reclaimed canadian maple tongue and groove from an old gymnassium firstly it is going on a concrete floor which looks like it has bitumen tiles on will i need to remove tiles or can i lay on this and secondly what is the best glue to use and what is its cost any advice would be greatly and much appreciated ps the maple is 3/4 thick