All Topics / Value Adding / Soundproofing floor of a Qlder Search for: Viewing 1 post (of 1 total) vyaw2003Participant @vyaw2003 Join Date: 2006 Post Count: 185 May 14, 2018 - 9:00 am What is the best way to Soundproof the floor of a Qlder. The floor is already there so it will have to go underneath. Should I line the ceiling with Cement sheet and insulation bats before ceiling plaster? Viewing 1 post (of 1 total) You must be logged in to reply to this topic. If you don't have an account, you can register here.