Soundproofing internal wall advice

My house is steel framed/ concrete so the walls are pretty thin and the internal wall alcove between the two bedrooms is about 10cm thick. You can hear everything through it. A few years ago we had work done downstairs and the builders put 50mm PIR Boards along the partition wall & plasterboard/plastered it and it worked well dampened the sound of our very loud neighbours. I considered doing the same upstairs but the same builders (or any builders for that matter) aren’t interested in such a small job. A handyman told us we would probably need a frame for the PIR board and ultimately said be wasn’t prepared to do it so back to square one. Do you need a frame or can it be stuck directly to the wall, plasterboard on top then plastered? I was looking at alternatives and I came across trepanel accoustic panels and thought this might work for the alcove between the two rooms (190cm wide space) and might be easier to DIY. I read that that the soundproofing they offer isn’t that great but I also saw a product called Tecsound 70SY Self-Adhesive Membrane and wondered if I applied this directly to the wall under the wood panels would the two together offer decent soundproofing? Is there anything I need to consider before doing this? There’s no issues like black mould or anything like that with this wall. I’m not a confident DIYer so the PIR boards are definitely beyond my competence, as is creating a stud wall with insulation behind, so any easy solutions would be appreciated! Thanks submitted by /u/Lomadh_an_Luain_ort [link] [comments]

Mar 21, 2025 - 00:24
 0

My house is steel framed/ concrete so the walls are pretty thin and the internal wall alcove between the two bedrooms is about 10cm thick. You can hear everything through it. A few years ago we had work done downstairs and the builders put 50mm PIR Boards along the partition wall & plasterboard/plastered it and it worked well dampened the sound of our very loud neighbours. I considered doing the same upstairs but the same builders (or any builders for that matter) aren’t interested in such a small job. A handyman told us we would probably need a frame for the PIR board and ultimately said be wasn’t prepared to do it so back to square one.

Do you need a frame or can it be stuck directly to the wall, plasterboard on top then plastered?

I was looking at alternatives and I came across trepanel accoustic panels and thought this might work for the alcove between the two rooms (190cm wide space) and might be easier to DIY. I read that that the soundproofing they offer isn’t that great but I also saw a product called Tecsound 70SY Self-Adhesive Membrane and wondered if I applied this directly to the wall under the wood panels would the two together offer decent soundproofing?

Is there anything I need to consider before doing this? There’s no issues like black mould or anything like that with this wall.

I’m not a confident DIYer so the PIR boards are definitely beyond my competence, as is creating a stud wall with insulation behind, so any easy solutions would be appreciated!

Thanks

submitted by /u/Lomadh_an_Luain_ort
[link] [comments]