In a Central London flat it is often the part that generates the most noise complaints, the most dust migration into other rooms, and the most confusion about who needs to sign off on the finish before the sander even arrives. This is a practical guide to getting it right the first time.
Why floor sanding disrupts more than people expect
Sanding removes a layer of a solid or engineered timber floor to expose clean wood underneath, then usually seals it with an oil or lacquer. The mechanical part is loud and dusty; the sealing part introduces fumes that need ventilation and drying time before the room is usable again. In a period conversion with shared stairwells, thin party floors and neighbours directly below, all three of those — noise, dust, fumes — are someone else's problem as well as yours, and that changes how the job needs to be planned.
The dust is the one people underestimate. Fine sanding dust travels through gaps under doors and into ductwork, and it settles on every horizontal surface in a flat, not just the room being worked on. A contractor should be running a sander connected to proper dust extraction rather than an open-belt machine with a bag on the side — ask what containment they use before you book, and expect the rest of the flat to be sheeted and taped regardless.
Noise, working hours and your neighbours
In a mansion block or converted period building, floor sanding is exactly the kind of job that generates a complaint to the managing agent if it isn't scheduled properly. Impact and vibration noise through a shared floor slab travels further than people expect, and blocks increasingly have their own rules about when noisy trades can work — our guide to floor noise rules in a mansion block covers how those rules tend to be framed and why they exist.
Separately, several Central London boroughs — Westminster among them — apply their own restrictions on when construction noise is permitted, particularly around weekends and early mornings. Check the specific hours that apply to your building's location before you commit a contractor to a start date; our page on working hours restrictions in Westminster sets out what to check and who to ask.
Check your lease before you choose the finish
This is the step that catches people out. Many leases in flats and mansion blocks specify requirements for hard floor coverings precisely because impact noise transfers between flats — commonly an acoustic underlay standard, and sometimes a requirement for freeholder or managing-agent consent before a carpeted floor is replaced with timber, tile or another hard finish at all. Our guide to acoustic underlay requirements in flats explains what these clauses typically look for, and if consent is required for the change of floor finish itself, that is usually the same process covered by our page on a licence to alter in a mansion block.
These are lease-specific obligations rather than a general legal rule, and the wording varies significantly between buildings and even between flats in the same block. This is not legal advice — check the actual clause in your lease, or ask your managing agent, before you commit to a finish, and certainly before you rip out an existing carpet or underlay.
Sand and reseal, or replace?
Not every tired floor needs replacing. If the existing boards or parquet are solid timber with enough wear layer left, sanding and resealing is usually the cheaper and less disruptive route, and it keeps original period flooring intact rather than sending it to a skip. Engineered boards are a different story: many engineered floors have a thin real-wood veneer that can only be sanded once, if at all, before you're through to the substrate — our comparison of engineered vs solid wood flooring explains the difference and why it matters before you book a sand.
Original parquet is its own category again. Herringbone and block parquet in period conversions is often worth restoring rather than replacing, but it comes with its own set of problems — missing blocks, movement, old adhesives — that a straightforward sanding quote won't necessarily flag. Our page on parquet restoration covers what tends to come up.
What sanding reveals underneath
Taking the finish off a floor is also the moment you find out what's actually going on structurally. Squeaks, movement, and boards that flex under weight are common in older stock, and sanding is often the point at which a landlord or homeowner discovers them properly rather than living with the noise. If that's already bothering you before any sanding work is booked, our guide to squeaky floorboards explains the usual causes and fixes — worth reading before, not after, the sander arrives, because some fixes are easier with boards already lifted.
Where floor sanding sits in a wider refurbishment
If floor sanding is one part of a larger job rather than a standalone task, sequencing matters. Sanding and sealing should generally happen towards the end of a refurbishment, after any wet trades — plumbing, tiling, plastering — are finished and dry, because dust and moisture are the enemy of a freshly sealed floor, and a sealed floor is easy to damage while other trades are still moving materials through the room. Our guide to sequencing a kitchen and bathroom refurbishment sets out the order most jobs actually follow, and floor finishing sits in the same logic even when the room in question isn't a kitchen or bathroom.
Access and logistics in Central London
Getting sanding equipment, extraction units and materials into a flat in W1, W2, NW8 or W9 is rarely as simple as parking outside. Restricted bays, permit zones and porter-controlled service entrances all add time a contractor from outside the area won't have budgeted for. Our page on parking permits for trades in Central London is worth reading if you're coordinating access yourself, particularly for a job with bulky extraction equipment that can't easily be carried far.
Getting a quote
Floor sanding is priced against the room, the floor type and the finish you want — sand-and-seal, oil, lacquer, or a full replacement — rather than a single flat figure, so we quote it against a photo and a few basic details rather than guessing. See our floor sanding service page for current set prices, or our wider wood flooring page if you're weighing sanding against a full new floor. Send a photograph of the room and tell us the floor type through our contact page, and we'll tell you honestly whether it's a sand-and-reseal job or something bigger.