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Carpentry & Joinery Question
Anyone have any experience with soundproofing a ceiling in a flat? materials supplier recommendations wanted.
Opinions and advice on effectiveness also welcome.
If you go to Travis perkins they can supply afull system.
You need to drop in an MF (metal frame) ceiling.
Then you will put in the sound insulation, which is like cavity or loft insulation but designed to dampen sound waves more effectively. It is importan that there is at least a 50mm air cavity between ceiling, insulation and board as the air space also acts as a kind of insulation/dampener. If there is contact the sound waves will transfer through negating the sound proofing.
Then specific sound board should be fitted to the MF grid. Joints are to be sealed with a silicone substance, which again, is manufactured specifically for this job. Then a standard scrim can be taped on - which then means the plasterer can start skimming.
Of course there are other methods and manufacturers/retailers supplying different materials.
This will not block out all sound by the way - it is just one system. There are other systems to be fitted from above; other means of deflecting sound waves etc but they are generally used in recording studios where aesthetics arent a high priority.
Don't skimp on any of the items just follow manufacturer instructions.
Answered 29th Feb 2012
You need to fix metal resonating bars at 400mm centres to your ceiling joists, your 15mm soundbloc plasterboard is then screwed to these bars ensuring that the screws fixing the plasterboard to the bars do not go into the ceiling joists, then fix another layer of 15mm soundbloc plasterboard ensuring joints are overlapped this will give you 30mm of plasterboard effectively floating off the ceiling joists. Ensure you have a gap of approx 5mm around the ceiling between the walls this is to be filled with acoustic mastic then scrim and plaster as normal remembering to have insulated between ceiling joists with acoustic insulation. All the best
Answered 12th Mar 2012