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*Please Note: PhoneStar was previously branded as Phonewell

This Direct to Wall solution offers good results when soundproofing party walls. However where space permits consider the deeper decoupled wall solution or decoupled and battened wall solution particularly if you want to reduce noise from noisy neighbours. These options will provide significantly higher noise reduction through the wall because they combine high mass with decoupling.


Direct To Wall

Good performance for the absolute minimal loss of living space, but if at all possible we would strongly recommend the decoupled wall options. However this option is ideal as a remedial solution to meet Building Regulations where only a small improvement is required. It can also be used where the workable space is extremely limited.


  • Wall with or without existing plaster or plasterboard
  • 15mm PhoneStar Acoustic Insulation
  • 12.5mm or 15mm sound resistant plasterboard
  • (Optional second layer of plasterboard)

Materials List: (available from our stockists)

  • PhoneStar acoustic insulation (1200mm x 800mm x 15mm)
  • PhoneStar Eco-tape (50mm x 50M)
  • Sound resistant plasterboard (2400mm x 1200mm x 12.5 or 15mm)
  • Adhesive foam and foam gun (approx. coverage per can is 15m²)
  • Secondary 6mm diameter hammer fixings
  • Flexible mastic or Acoustic sealant

Please download the full installation instructions for soundproofing walls before commencing work:

Brief Instructions: (have you considered Flanking Noise?)

1. Make existing wall sound by removing any loose material.

2. Hold PhoneStar boards in a landscape or horizontal formation and bond them to existing wall with a quick setting adhesive foam and butt the panels closely together. Do not leave any gaps between or around the PhoneStar layer. See Cutting and Taping PhoneStar.

3. Bond plasterboard to PhoneStar with a quick setting adhesive foam, being careful to stagger joints and leave a 5mm perimeter gap around the plasterboard at the floor, walls and ceiling. A second layer of plasterboard can optionally be added on.

4. Secure plasterboard to wall with a few secondary mechanical hammer fixings, do not over-tighten.

5. Seal 5mm perimeter gaps with flexible mastic or acoustic sealant.

6. Tape and seal all plasterboard joints and fill screw heads.

7. Fit skirting boards ensuring no contact with the floor – leave a 2mm gap.