DIY Domestic Wall Soundproofing
In domestic situations you will generally be wanting to soundproof either a brick/block wall or a stud partition wall.
New Build Stud PartitionFor stud partitions that are new build use our acoustic mineral wool in the stud cavity. For even better performance, use the 2FTex quilt in the stud cavity. 2FTex is far superior to mineral wool as it has a layer of acoustic barrier sheet laminated in the middle of the product. Hang at least one side of the wall on resilient bars and use at least one layer (two is much better) of T50 or VL-65 acoustic membrane in between the plasterboard sheets. Isolate the perimeter of the framework with the RFT50 High Performance Resilient tape.
Take care to seal the perimeter and joints with our acoustic sealant and ensure you maintain resilient isolation from the framework using our neoprene strips beneath the battens. Make the stud cavity as deep as possible or better still use independent frames for each side of the wall. Offset the second layer of plasterboard to reinforce the seams in the first (see diagram below).
This is for guidance only. If you are unsure about your DIY skills it may be better to contact an experienced builder.
Brick Party Walls
The results you will get when doing this will depend on workmanship, materials and methods used, but improvements can sometimes be limited by ‘flanking noise’. This phenomenon is where a percentage of the noise may not only be transmitted directly through the wall but also via adjacent walls connecting the party wall, or even through floor/ ceiling slabs connected to the party wall. This can vary from one project to another and depends on the existing structure. For example, if the building is in-situ concrete where the junctions are strongly coupled (as shown in the following diagram) then treating the ceiling and floor as well may also be necessary.
'Boss plaster', where the plaster has lost its strength and adhesive bond to the wall, can also present weak spots for noise/sound transmission and cause poor acoustic perfor-mance. If the plaster sounds hollow when the surface is tapped, consider getting the walls re-plastered as this can greatly improve the acoustic effectiveness.