party wall: ~2.4m x room width
Advanced options
Mass + decoupling + absorption is the whole science: heavy boards block, independent frames stop vibration bridging, mineral wool eats the cavity echo. Honest physics: a good fitted system cuts airborne noise (voices, TV) very noticeably: bass thump and impact noise (footsteps above) travel through STRUCTURE and need ceiling/floor treatment at the source: no wall treatment fixes upstairs footsteps. Egg boxes and "acoustic foam" panels shape echo INSIDE a room: they do nothing for the neighbours' noise: the internet's most persistent soundproofing myth.
What The Soundproofing Cost Calculator Works Out
- Estimated cost: wall area x the rate for the treatment level. Acoustic panel upgrades run about GBP 35 per m2 as DIY, an independent stud frame with mineral wool and acoustic board GBP 60 to GBP 90 fitted, and premium fully decoupled systems GBP 100 to GBP 140, so a typical 12 m2 party wall costs GBP 900 to GBP 1,500 at the middle level.
- Room depth lost: every real soundproofing system is paid for twice, once in money and once in centimetres: about 3 cm for panels, 7 cm to 10 cm for a stud system and 12 cm to 15 cm for the premium build.
- What each level does and expectations: mass blocks, decoupling stops vibration bridging and absorption eats the cavity echo. Wall treatments cut airborne noise (voices, TV); bass thump and footsteps travel through the structure and need ceiling or floor treatment at the source. Acoustic foam and egg boxes shape echo inside a room and do nothing for the neighbours' noise.
- Quoted rate and room dimensions (advanced): use your installer's per-m2 figure, and enter the room's width and depth so the space given up can be shown as square metres and a percentage of the room.
- Ceiling treatment (advanced): an independent or resilient-bar ceiling with acoustic board runs GBP 90 to GBP 150 per m2 and is the only wall-side answer to footsteps from a flat above; treating the floor above with resilient underlay at the source is cheaper if the neighbour agrees.
- Floor underlay (advanced): acoustic underlay at GBP 15 to GBP 30 per m2 under your own floor cuts the impact noise you send downwards and helps flanking through the floor void.
- Making good and VAT (advanced): skimming, painting, refitting skirting and moving sockets add GBP 10 to GBP 20 per m2 of treated wall and are often excluded from acoustic quotes, as is VAT from trade installers.
- Likely noise reduction (advanced): roughly 5 dB for panels, 15 dB for a stud system and 20 dB or more for the premium build on airborne sound. Every 10 dB halves perceived loudness, so the middle level turns next door's television into a murmur.
- Cost per m2 of room protected and comparison table (advanced): the all-in project cost spread over the room it quietens, plus all three levels priced with your ceiling, floor, finishing and VAT choices so the extra for each step up is visible.