Floor sanding cost and what a professional refinish actually involves

Sanding and refinishing an existing wood floor is often the single most cost-effective way to transform a room, since it works with what's already there rather than replacing it entirely — but the price range quoted online is wide enough that it's worth understanding what actually drives it before getting quotes.

In broad terms, floor sanding in the UK commonly costs around £12-30 per square metre, though this figure covers a wide range of jobs from a light refresh to a full restoration. A more specific and commonly cited benchmark for a straightforward sand-and-seal job on sound timber boards or parquet is around £25-45 per square metre in 2026, which typically includes sanding with a dust-extraction system, edging work around the room's perimeter, minor filling of small gaps or nail holes, and two to three coats of a clear seal. Jobs involving staining, rather than a clear seal, are commonly cited a little higher again, around £30-45 per square metre, since staining adds an extra process and requires more careful, even application. One widely cited benchmark figure for sanding and refinishing work overall sits around £42 per square metre, though this should be treated as an illustrative midpoint rather than a fixed price for any specific job.

Three factors are commonly cited as driving most of the variation in price: the size of the room (larger areas usually cost less per square metre than small, fiddly rooms with lots of edging), the condition of the existing timber (boards with old varnish, deep scratches, gaps between boards, or proud nail heads needing to be punched down all add time), and the finish chosen (a simple clear seal is quicker and cheaper than staining or a hard-wax oil finish requiring multiple coats and drying time between each). Regionally, London and the South East typically run around 20-30% higher than equivalent work in Northern England or Wales, in line with general trade pricing patterns across the UK.

The process itself generally follows a similar sequence regardless of finish. The main floor area is sanded first, usually with a drum or belt sander working through progressively finer grits, while a separate edging sander handles the areas close to skirting boards that the main machine can't reach. Small gaps and nail holes are then filled, and any final light sanding is done to blend the fill with the surrounding boards before the finish is applied in the agreed number of coats, with drying time between each. Most reputable modern sanding companies use a dust-extraction system built into the sanding equipment, which makes a considerable difference to how much mess and airborne dust the job generates compared with older, non-extraction sanding methods — it's a reasonable question to ask any company quoting for the work.

Not every wood floor can simply be sanded back to good condition, and it's worth understanding the limits before assuming sanding is automatically the answer. Solid wood boards can generally be sanded a number of times over their lifespan, but each sand removes a thin layer of timber, and boards that have already been sanded several times may simply be too thin to safely sand again without risking exposing nail heads or breaking through the board entirely. Engineered wood flooring is more limited still, since only the thin real-wood veneer on top — commonly just a few millimetres — can be sanded at all, and a floor that's already had one or two refinishes may have little or no veneer left to work with safely. Boards that are significantly damaged, rotten, or have large gaps from movement typically need selective repair or replacement before sanding makes sense, rather than being sanded over as they are.

Before booking, it's worth asking a sander directly whether the floor is a good candidate for sanding given its age, material and prior refinishing history, what dust-extraction equipment they use, what finish options they offer and how these affect durability and maintenance, and to see photos of similar previous jobs. A company confident in the quality of its work should have no difficulty answering all of these clearly.

Frequently asked questions