how much weight is it safe to hang from party wall?

[dragonfly101]

I'm looking into adding soundproof panels to the wall between me and my neighbours (it's about two layers of bricks I think, and can hear the neighbours tv when they have it at normal volume). The house seems a fairly standard 60s residential terrace.

The panels I'm looking at weigh 20-30 kg per square metre, to do all the walls I'd like to do will add up to around 1500kg added to the house, with 500kg hanging off two walls.

 

[blup]

Where/why do the panels hang off the wall, as opposed to resting on floor?

Blup

 

[dragonfly101]

The boards I'm looking at take 9 screws each, and start 5mm off the floor.

 

[blup]

As I understand it the acoustic gap is between the (new) insulating wall and the party wall i.e. there is a gap, unless your neighbour is below you?

Blup

 

[^woody^]

My missus must have at least 1.5 tonne in clothes and shoes in the wardrobe, no probs on the wall loading.

 

[dragonfly101]

These are the boards I'm looking at: https://www.soundproofingstore.co.uk/store/-p52219211, this isn't a traditional soundproofing method, it's intended for rooms where space is tight (only reduces room size by 30mm). I think it compensates for lack of air-gap through sheer mass, as mass absorbs sound.

 

[tomfe]

Standard 12.5mm plaster board is about 10kg a SQM.

 

[dragonfly101]

ok, so sounds like the traditional method itself of a stud wall and two layers of acoustic plasterboard would be a similar weight anyway (just on the floor instead of hanging on the walls). I guess I don't need to worry.