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Walls, floor and ceiling acoustic treatment — measured before, measured after, in dB terms.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Hiring a bedrooms, without the regret.
Four moves that separate a smooth job from a nightmare.
Insulation alone inadequate
Mineral wool blocks airborne noise only. For impact/structure-borne noise, need decoupling.
Cheap acoustic doors
Standard hollow-core doors transmit sound. Solid-core or acoustic-rated needed.
Window seals failing
Old windows leak sound. New double-glazed with acoustic spec or secondary glazing.
Floor noise transferred
Acoustic underlay under flooring above can help. Ceiling treatment from below also.
Costs & timeline
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Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Acoustic insulation existing stud wallPer m²
£40–£120/m²
New plasterboard layer (mass)Per m², over existing
£30–£80/m²
Resilient bar + acoustic plasterboardPer m², premium spec
£60–£180/m²
Acoustic door upgrade (fitted)Per door, with seals
£500–£1.5k
Secondary glazingPer window
£300–£1.2k
Acoustic double-glazed windowPer window replacement
£500–£2.5k
!
Quote spread is typically ± 18% — always get 3 quotes.
Quiet bedrooms improve sleep quality. Sound-proofing addresses external noise (traffic, neighbours) and internal noise (children, plumbing). Expect to pay £500–£8,500 for UK bedroom acoustic treatment depending on scope.
What Does the Work Involve?
Diagnosis identifies noise sources and paths. Solutions: acoustic insulation in stud walls and ceilings (Rockwool, mineral wool 100mm+), acoustic plasterboard (mass-loaded vinyl, Soundbloc), resilient bars separating new plasterboard from existing studs, acoustic doors (heavier slabs with seal kits), secondary glazing on windows, double-glazed acoustic windows.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Acoustic insulation existing stud wall | 40 | 120 | Per m² |
| New plasterboard layer (mass) | 30 | 80 | Per m², over existing |
| Resilient bar + acoustic plasterboard | 60 | 180 | Per m², premium spec |
| Acoustic door upgrade (fitted) | 500 | 1,500 | Per door, with seals |
| Secondary glazing | 300 | 1,200 | Per window |
| Acoustic double-glazed window | 500 | 2,500 | Per window replacement |
| Full single-room acoustic treatment | 1,500 | 8,500 | Walls, ceiling, window, door |
How Long Does It Take?
Acoustic treatment of single wall: 2–4 days. Full room: 1–2 weeks.
DIY or Professional?
Some elements DIY-able (insulation, secondary glazing). Specialist acoustic contractor better for whole-room or premium results.
Choosing the Right Tradesperson
Acoustic specialist (Soundsorba, Trade Soundproofing UK) or general builder with acoustic experience. Independent acoustic survey for chronic problems (£200–£500).
UK Regulations
Building Regs Part E (acoustic) for flats and party walls. No specific regs for single-dwelling internal sound-proofing.
Common Problems
- Insulation alone inadequate: Mineral wool blocks airborne noise only. For impact/structure-borne noise, need decoupling.
- Cheap acoustic doors: Standard hollow-core doors transmit sound. Solid-core or acoustic-rated needed.
- Window seals failing: Old windows leak sound. New double-glazed with acoustic spec or secondary glazing.
- Floor noise transferred: Acoustic underlay under flooring above can help. Ceiling treatment from below also.
Frequently Asked Questions
How quiet can a bedroom be?
Standard bedroom: 35–40 dB ambient. Quality acoustic treatment: 25–30 dB. World Health Organization recommends below 30 dB for healthy sleep.
Most effective acoustic upgrade?
Decoupled wall (resilient bars + extra plasterboard mass + insulation) gives 15+ dB improvement. Single-element upgrades give 5–10 dB.
Secondary glazing or new window?
Secondary glazing: cheaper, better for solid-wall heritage homes. New acoustic double-glazing: cleaner look, similar acoustic performance.
Best floor for noise reduction?
Carpet with quality acoustic underlay (Tredaire, Cosi) absorbs impact noise. LVT with acoustic underlay also effective. Avoid hard floor without underlay above bedrooms.
Window treatments for noise?
Heavy curtains absorb some airborne noise. Acoustic-spec windows or secondary glazing far more effective.
Will treatment affect ventilation?
Sealed rooms need positive ventilation (extractor, MVHR). Acoustic treatment can't compromise ventilation requirements.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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