Sound methods to get rid of noise

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 Sound methods to get rid of noise



Everyone deserves a quiet life – even those who live in tenement flats – so let’s hear it for acoustic insulation.

Noisy neighbours can be hell. Sometimes noise can be nothing more than a small irritation but if it gets out of hand it can lead to severe stress.

Soundproofing is costly and disruptive to install. And the result will probably be noise reduction rather than elimination.

Noise pollution travels in all directions and gets through solid items such as floor joists and walls. The key is to muffle out the noise though air gaps and to use acoustic insulation.

The noise pollution you might be experiencing could be airborne such as loud music or impact noise from people walking above.

Last week, I talked about insulating between floor and ceiling, which is best done by acoustically insulating the floor and ceiling.

Nine times out of 10, it’s the person who is being affected by the noise, rather than those causing it, who has to pay to solve it.

If there is noise coming from above, acoustically insulating your ceiling will help. But it’s much better to acoustically insulate the floor too.

And always remember to acoustically seal the wall and floor perimeter to eliminate the flanking of noise being transmitted between hard surfaces where the floor meets the wall. Acoustic wall insulation should be carried out along with the ceiling and floor to provide the best system to reduce noise levels to a more tolerant level.

There are different ways to acoustically insulate a wall.

Stand-alone partition walls are probably the easiest. You have a 75mmx50mm timber stud with acoustic quilt between the timber studs. Then, on both sides of the timber stud, fix 12.5mm acoustic plasterboard, then double-sheet with another 15mm of acoustic plasterboard, making sure the joints between boards are staggered.

Acoustic quilt looks like normal insulation but has a rubber backing.

Probably the most common situation will be separating walls between fl ats or semi-detached houses.

Separating walls in tenements can be as little as half a brick thick in places. The best solution is to build a partition wall next to the existing separating wall.

Build your 75mmx50mm timber studs at 600mm centres, 20mm from the existing wall.

The 20mm air gap prevents noise bridging solid surfaces.

Fill between the timber studs with acoustic quilt insulation and double-sheet the timber studs with two layers of 15mm acoustic plasterboard, making sure the joints are staggered.

The first layer of 15mm plasterboard should have its joints fi lled with an acoustic sealant and the second layer can be taped and filled or plastered and painted.

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