Soundproofing Walls 2017-10-24T12:56:29+00:00

SOUNDPROOFING WALLS

Walls

This page deals with the different solutions for soundproofing walls.

Soundproofing system for upgrading existing cavity stud walls

Use this system where the loss of space is a primary concern. This system will typically add only 35 mm thickness to the existing wall plane.​

  • Skirtings and any door architrave are dismantled and the plasterboard face is removed exposing the cavity.
  • Acoustic insulation 100 mm slab (RWA 45 Kg) is friction fitted to the cavity spaces as a blanket coverage.
  • Resilient bars are attached, horizontally, to the stud framework at 450 mm centres.
  • A primary layer of 19 mm plasterboard plank is hung from the resilient bar.
  • Gaps between butted joints and around the perimeter of the plane are sealed to airtight.
  • A secondary layer of 12.5 mm soundbloc plasterboard is hung from the resilient bar.
  • The new surface is set with a plaster skim coat and skirting and architrave is re-fitted.

attached acoustic lining system

​Attached Soundproofing system for stud and solid walls

Use this system where the loss of space is a primary concern. This system will typically add overall 50 mm thickness to the existing wall plane.

  • With this system the existing plasterboard face of a cavity wall is left in place.
  • With solid walls this slim line system is attached to the existing plane.
  • Any dry lining or dot and dab plasterboard is removed and skirting and architrave is dismantled.
  • Resilient bars are attached, horizontally, to the wall surface at 450 mm centres.
  • Acoustic insulation 25 mm quilt (RWA 45 Kg) is fitted between resilient bars as a blanket coverage.
  • A primary layer of 19 mm plasterboard plank is hung from the resilient bar.
  • Gaps between butted joints and around the perimeter of the plane are sealed to airtight.
  • A secondary layer of 12.5 mm soundbloc plasterboard is hung from the resilient bar.
  • The new surface is set with a plaster skim coat and skirting and architrave is re-fitted.

​Independent Soundproofing System for stud and solid walls.

Where a superior level of noise reduction is required and any loss of space in not an issue. The additional benefit is a mechanical isolation between the existing wall and the acoustic lining. This system will typically add 170 mm thickness to the existing wall plane.

  • This system requires an independent frame braced between floor and ceiling, isolated from the wall plane.
  • The frame is constructed in either timber or metal and creates a clear gap between it and the existing wall.
  • Acoustic insulation 100 mm slab (RWA 45 Kg) is friction fitted to the frame cavity spaces as a blanket coverage.
  • Resilient bars are attached, horizontally, to the stud framework at 450 mm centres.
  • A primary layer of 19 mm plasterboard plank is hung from the resilient bar.
  • Gaps between butted joints and around the perimeter of the plane are sealing to airtight.
  • A secondary layer of 12.5 mm soundbloc plasterboard is hung from the resilient bar.
  • The new surface is set with a plaster skim coat a new skirting and architrave is fitted.

Variations where maximum noise reduction is required and any loss of space is less of an issue.

Sound Deadening Mat

There is an opportunity to add sound deadening mat to the wall plane for additional mass. This is mineralised rubber mat or either 5 Kg, 7 Kg or 10 Kg which acts like a sheet of lead. The mat can be tacked to a frame or sandwiched between plasterboard layers and improves the mass of a structure for the minimal loss of space.

Alternative Sheet Materials

Whilst plasterboard is a widely available and commonly used sheet material other options do exist. Cement particle board has even greater mass although is more difficult to cut or machine. Proprietary acoustic boards, although more costly, can provide benefits. These boards are composite in construction and can deliver a number of acoustic material layers in a single sheet.

Remember:

  • Noise that is generated on the other side of a wall will not only impact on the wall itself but as sound vibrations radiate out from the noise source they will impact on all 6 planes of a cubic space.
  • Sound can travel through and across planes, depending on the construction materials and intensity of noise.
  • An element of sound may well flank around a singular plane even after acoustic treatment has been carried out.
  • If the desired reduction in sound transmission is not achieved other planes in the origination space may need to be treated.

The important objectives to achieve

  • Aim to establish additional mass to the wall plane.​
  • Isolation of the new surface from the existing surface, where possible.
  • Frames independent from the wall plane create mechanical isolation.
  • Resilient bars decouple the plasterboard face from the frame or wall.
  • High density acoustic insulation in any framing or cavity will help reduce reverberation.
  • All gaps around perimeters and around any penetrations are sealed to airtight.
  • Minimise penetrations through the acoustic lining (recessed lights, switch plates, plug sockets).
  • Avoid any mechanical bridging between decoupled or isolated layers.​

ADVANCED SOUND PROOFING Ltd can arrange for airborne and impact sound tests to be carried out by technicians registered with the Association of Noise Consultants. New conversions are required under Approved Document E to conform to the building regulations. Sound tests can be carried out to identify specific weaknesses in separating structures prior to remedial works or to confirm specific levels that have been achieved by the installation of an acoustic treatment.

House structure

Advanced Sound Proofing Ltd will always, through our free consultation process, aim to match your requirements and budget to the most cost effective materials currently available. We are constantly researching and trialling new innovations and products in association with our suppliers and Acoustic Manufacturing Specialists to find materials that will provide you, the customer, with the very best that the industry has to offer.