October 2, 20233 yr You've got a chance to spend my money for me. Need about 50m2 of sound insulation for my stud walls. Thoroughly confuddled, I don't want to end up chasing marginal gains at the expensive end of the market, but likewise It would be nice to see benefit from the effort involved with cutting and fitting. Typical wall build-up 95mm timber stud, faced on 1 side with 18mm ply + 12.5mm plasterboard on and 12.5mm plasterboard t'other side and 90mm metal frame with 18mm Ply + PB on one side and PB The ply is there because it was kindly donated... So making use of it for it's fixing properties rather than having to think about future placement of tv's and fitting extra noggins.
October 2, 20233 yr 50mm RWA45 here. don't know how it performs yet though as we're not finished. 😉 i doubled it for the ceilings though but with the posi-joists being 304mm deep i figured i had the room to do so.
October 2, 20233 yr Most of our commercial jobs separating offices and even bedrooms on Student accommodation use 25 mil and 50 for 300 mil party walls It’s simply to stop the sound bouncing around
October 2, 20233 yr For rooms where you’re actually concerned about acoustics, why not also use sound block plasterboard too? Not much more money for belt & braces, and only needs installing on party walls (between habitable spaces) if you want to conserve funds. Me personally, I’d put SB boards on every internal wall, and white on ceilings of FF, but again I’d revert to SB on ceilings of GF.
October 2, 20233 yr Beware if there is a chance of the walls being tested. It only occurred once for me because there was a certification needed for use. It failed my target but fortunately was ok because i had overestimated the requirement. The testing expert said that we cannot rely on the lab published test results because they are for optimum conditions, and a sample panel not a real wall.
October 2, 20233 yr Seal the edges of the ply around the perimeter of the wall before plaster boarding and stagger the plasterboard joins over the plywood joins.
October 2, 20233 yr It's probably cheaper to just buy everyone who lives in the property noise cancelling headphones though
October 2, 20233 yr When using 25-50mm of acoustic insulation in a 100mm+ wide wall, how do you place it for best results? Staple it midway with air either side? Pushed up against one of the plasterboards?
October 2, 20233 yr 16 minutes ago, saveasteading said: Pushed in snugly, no air gaps. 75 or 100 would be better. I thought there should be a gap between the insulation and the PB?
October 2, 20233 yr 11 hours ago, crispy_wafer said: You've got a chance to spend my money for me. Need about 50m2 of sound insulation for my stud walls. Thoroughly confuddled, I don't want to end up chasing marginal gains at the expensive end of the market, but likewise It would be nice to see benefit from the effort involved with cutting and fitting. Typical wall build-up 95mm timber stud, faced on 1 side with 18mm ply + 12.5mm plasterboard on and 12.5mm plasterboard t'other side and 90mm metal frame with 18mm Ply + PB on one side and PB The ply is there because it was kindly donated... So making use of it for it's fixing properties rather than having to think about future placement of tv's and fitting extra noggins. The acoustic performance of the wall doesn't depend on the sound insulation - most on the market are pretty identical to each other in terms of both the frequency and absorption because the materials are so similar - what you need to do is go to the insulation manufacturer to get the performance of a specific build up design.
October 3, 20233 yr 15 hours ago, jayc89 said: I thought there should be a gap between the insulation and the PB? If the insulation absorbs sound waves, then the more you install the better the results. Air does not arrest sound waves "fill 'er up!!"
October 3, 20233 yr 15 hours ago, SimonD said: The acoustic performance of the wall doesn't depend on the sound insulation - most on the market are pretty identical to each other in terms of both the frequency and absorption because the materials are so similar - what you need to do is go to the insulation manufacturer to get the performance of a specific build up design. Particularly good advice if... 23 hours ago, saveasteading said: there was a certification needed for use So you have some paperwork to support methodology & execution. Most BCO's will just be happy with that tbh.
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