Big call for your committee to instruct you to interfer with common property. Essentially without their ok/involvement you could make a total mess and then they will fight you or all the other owners will need to pay for it if its goes wrong later. Or if you wont be there forever just do it all yourself on the basis its probably going to be ok, you hope. If thats the route you take id get it in writing from suppliers, contractors and also have your committee sign it off to cover your tail if it does go wrong.