Acoustic underlay for Greenwich flat conversions
Most Greenwich freeholders write "17dB minimum impact reduction" into the lease and stop there. That single line rules out standard 3mm foam, standard XPS boards and 90% of laminate underlay. In a georgian and victorian period homes conversion we fit rubber-crumb or cork-composite underlays rated 18–21dB with a signed spec sheet you can send to the managing agent before work starts.
What acoustic underlay for flat conversions in Greenwich actually involves
Most Greenwich freeholders write "17dB minimum impact reduction" into the lease and stop there. That single line rules out standard 3mm foam, standard XPS boards and 90% of laminate underlay. In a georgian and victorian period homes conversion we fit rubber-crumb or cork-composite underlays rated 18–21dB with a signed spec sheet you can send to the managing agent before work starts.
Period properties have suspended timber and lath ceilings below — no aggressive sanding.
- Rubber-crumb and cork-composite underlays rated ΔLw 18–21dB
- Meets typical London leasehold requirement (≥17dB impact reduction)
- Signed spec sheet supplied for managing agent / freeholder approval
- Perimeter isolation strip fitted so plank noise doesn't bridge the wall
Before we quote a lvt job in Greenwich
- Subfloor flatness
LVT shows every bump — georgian and victorian period homes subfloors in Greenwich almost always need ply or self-levelling screed first.
- Door undercut
We trim doors on the day so they swing cleanly over glue-down LVT — no scraping, no callbacks.
- Pattern direction
Plank run follows the longest sightline; in narrow Greenwich hallways that means front-door to kitchen.
“Punctuality, Quality, Value — recommended.” — Falgun, verified Google review
In short — leasehold-compliant acoustic underlay in Greenwich from £12/m² supplied and fitted, with signed spec sheets for the managing agent.
Postcodes: SE10/SE3 · Routes: the A2 and Blackwall Tunnel approach · Common build: Georgian and Victorian period homes.
Covering Greenwich Peninsula, West Greenwich, Maze Hill.
Relevant finishes for acoustic underlay for flat conversions
Acoustic Underlay for Flat Conversions in Greenwich — common questions
Almost every London borough freeholder — including landlords managing Greenwich Peninsula blocks — asks for a minimum 17dB impact reduction (ΔLw). We fit underlays rated 18–21dB so you're the right side of the threshold, not sitting on it.
Usually yes on Greenwich leasehold flats. We supply the underlay spec sheet and product data ahead of the fit so you can get written approval — most agents turn it round in a week.
Only by lifting the LVT first. If the LVT is glue-down we usually replace it; if it's click-lock we can lift, add underlay and refit — subject to a condition check on site.
A 5–10mm foam strip around the wall edge stops the plank layer touching the wall or skirting. Without it, footfall bridges into the party wall and the downstairs flat still hears it — even with a great underlay. We fit it as standard.