Acoustic solution for badly converted flat


Postby Veron » Sun Feb 06, 2011 4:31 pm

After nearly 4 years of dispute with my neighbour we are finally getting near to resolving the laminate flooring issue in their flat (I live directly below them) - they can't sell which is why the sudden change of heart.

We have agreed to split the cost of insulating the floor of their flat (I just want to ensure it is done properly) and after spending many sleepless nights listening to them banging around, I think I have identified 3 issues which need to be resolved:

1. Laminate flooring needs to be taken up and a proper acoustic underlay needs to be put down

2. Squeaking floorboards need to be repaired (the neighbour said he has already screwed them down but the timber building moves)

3. There is a 6 inch void between their floor and my ceiling which needs to be filled.

Can anyone on the forum please advise on:

1. Which is the best acoustic underlay to use for impact noise in converstion flats;

2. What else apart from screwing down the floorboards can be done to repair them, particularly if the building moves; and

3. Does using a mineral wool in the void reduce noise?

Also, can anyone recommend a specialist company to do the above - I live in London.


Thanks
:D
Veron
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Postby collectors » Tue Feb 08, 2011 7:59 am

Defiantly one for an experienced fitter. But just on another note. Have you checked your deeds & communal agreements, as many of the places we have worked in have clauses saying in no way are wooden/laminate floors are allowed in upper level flats.
collectors
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Postby Astec Construction » Thu Feb 24, 2011 5:54 pm

Veron

There is a solution to your problem but i am afraid its not cheap option.
1. voids between joists need to be filled
a)acoustic foam - dearer option
b) acoustic rockwall insulation
beware of cheap products sold by diy merchants, insulation looks similar, but properties are different

2. Ceiling
from description i believe it is a poor conversion , and ceiling boards are not sound boards, or worse old lath and plaster.
You really want a suspended ceiling (loose aprox 30mm of height), IT MUST be resilient bars system (vibrate to eliminate noises), and again you can choose between :
a ordinary sound plasterboard (slightly cheaper)
b sound board with rubber backing

all need to be skimmed with plaster coat.

Having that system in place your neighbor can have a night club upstairs! and you will enjoy full nights of sleep.

Should you need more help let me know and ill try to help you more.

we have used different products on a job that am on now (between different floors), and if you like you can come and check the difference yourself

Robert
Astec Construction
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Joined: Thu Feb 24, 2011 5:28 pm


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