Decide what an acoustic improvement needs to achieve
Guidance reviewed 13 September 2026 · Planning information for homeowners in England
Before choosing an underlay, ceiling or glazing product, describe the noise problem and the part of the building affected. Voices, footsteps, plant vibration and street noise can call for different investigations. Record the room, time and circumstances in which the problem occurs so an acoustic specialist has a useful brief.
Start with the source and transmission route
Ask the adviser to distinguish sound travelling through the separating construction from sound travelling around it through adjoining elements, openings or services. A product selected for the wrong path may leave the main problem unchanged.
Record practical constraints: retained ceilings or floors, floor levels, door thresholds, room height, service access and neighbouring ownership. Compare the disruption of work from above, below or within the affected room with the improvement that can reasonably be evidenced.
Check the lease before changing the floor
A lease can restrict floor finishes or changes affecting retained parts. Confirm the actual clauses and any consent conditions before ordering a hard floor or altering a shared floor or ceiling. Planning or building approval does not substitute for required landlord consent.
Review the whole assembly, not one product label
| Interface | What to resolve before installation |
|---|---|
| Floor and ceiling | Existing construction, permitted access, added build-up, weight and effect on adjoining rooms. |
| Perimeters and junctions | How the proposed detail deals with edges, thresholds and connections to other elements. |
| Services and openings | How penetrations, access panels and concealed services are coordinated with the acoustic and fire design. |
| Finish changes | Whether a new finish changes the agreed performance assumptions or lease conditions. |
| Evidence | Which product/assembly evidence is relevant and what site inspection or testing is appropriate. |
Agree the required evidence for this work
Approved Document E provides guidance on resistance to sound. Ask the designer and building-control professional which requirements apply to this project and whether testing is needed. An existing-flat refurbishment should not inherit a universal conversion target or test requirement without that assessment.
Distinguish laboratory product data from performance in the completed building. Ask what assumptions the evidence depends on and how the installed detail will be checked. No blanket decibel reduction or promise of silence can be made from the name of a product.
Keep concealed details visible until the agreed checks
Add the relevant inspections to the programme before the affected floor or ceiling is closed. Keep dated photographs, the approved detail revision, product records and any required test report. Record deviations and obtain the designer’s response before covering them.
At handover, keep maintenance access and restrictions on later changes with the flat records. If the outcome differs from the agreed brief, refer it to the relevant adviser and contract process rather than assuming another layer of material is the remedy.
Take the next step with a planning template
Open the editable HTML worksheets, print them or download a copy. No enquiry is needed to use them.