One Coat Plaster Cost London: Prices by Job Size
One coat plaster typically costs £18 to £28 per m² in London when applied to sound existing plaster, and £150 to £250 as a minimum charge for a small patch job that a plasterer or handyman has to travel out for. A full ceiling skim usually lands between £250 and £450. Two coat plaster, needed when the wall is down to brick or the old plaster has blown, runs £28 to £45 per m² because it needs a backing coat before the finish coat goes on. Prices in Chelsea, Kensington and Mayfair sit at the top of that range; outer zones like Wimbledon and Richmond are closer to the bottom. Prices are a guide only. Contact us for an exact quote for your job.
Table of contents
- What is one coat plaster
- One coat plaster cost breakdown
- One coat vs two coat plaster: how to tell which you need
- What affects the price in London
- The mistake that costs twice
- How long one coat plaster takes to dry
- Areas we cover
- FAQ
What is one coat plaster
One coat plaster is both a technique and a specific product. As a technique, it means skimming a single thin layer of finish plaster over a wall that already has a sound backing coat underneath, usually old plaster that's intact but tired, cracked in places, or marked from picture hooks and shelving. As a product, "one coat" plasters (Thistle OneCoat Plus is the common one traders mention) are formulated to go on thicker than a standard finish plaster, up to around 10mm in some cases, so they can fill minor hollows and level out a patchy wall without a separate backing coat being needed first.
Handymen and plasterers in London use the term interchangeably for small jobs: patching a damaged section after a socket move, skimming over a chased-out wall following pipework, or freshening a ceiling that's gone powdery with age. It is not the right call when the existing plaster has lost its bond to the brick or blockwork behind it. That situation needs stripping back and starting with a backing coat, which is a different job and a different price.
One coat plaster cost breakdown
Most London plasterers and handymen price small jobs one of two ways: a minimum call-out charge for anything under about a day's work, or a per m² rate once the area gets large enough to quote properly. Here's roughly where both land across the city.
| Job type | Typical London price | Notes |
|---|---|---|
| Small patch repair (under 1m²) | £150 to £220 | Minimum charge covers travel, mixing, one visit |
| One coat skim, per m² (sound wall) | £18 to £28 | Labour plus materials, larger areas price better |
| Full wall skim, single room wall | £180 to £350 | Depends on wall size and number of walls |
| Ceiling skim, average room | £250 to £450 | Ceilings are slower and messier than walls |
| Two coat plaster, per m² (bare brick/blockwork) | £28 to £45 | Backing coat plus finish coat, two visits often required |
| Full room replaster (walls and ceiling) | £900 to £1,800 | For an average bedroom-sized room, varies with condition |
Materials add roughly £12 to £18 per 25kg bag of multi-finish or one coat plaster, and a small job uses one to three bags. PVA bonding agent, scrim tape for joints, and dust sheets are usually a few pounds extra and most tradespeople fold them into the quoted price rather than itemising them. Confirm this before work starts so there's no surprise on the invoice.
One coat vs two coat plaster: how to tell which you need
The honest test is whether the existing plaster still sounds solid when you knock on it. Tap the wall with a knuckle. A dull, hollow, or papery sound means the plaster has let go of the backing behind it, and skimming over that will crack within months because you're finishing a surface that's already failing. A firm, consistent sound across the area means it's a candidate for one coat.
Damp is the other deciding factor. If the wall has a tide mark, a musty smell, or the plaster crumbles when scratched, one coat work is a waste of money until the damp source is found and fixed. We see this a lot in older conversions around Islington and Highgate where original lath and plaster ceilings have been skimmed over repeatedly without anyone checking what's going on behind them.
If you're not sure which category your wall falls into, our guide on finding a plaster contractor near me covers how to vet someone and what questions to ask before they start mixing.
What affects the price in London
Postcode is the obvious one. Jobs in Chelsea, Knightsbridge, Belgravia and South Kensington sit at the higher end of every range above, partly because parking and access eat into a tradesperson's day, and partly because period properties in these areas often have lime plaster or uneven Victorian walls that take longer to finish well. A one coat skim in a flat near Holland Park or Notting Hill might run 10 to 15% above the same job in Wimbledon, Richmond or Putney, where access is easier and more properties have straightforward modern plasterboard walls.
Ceiling height matters too. Victorian terraces in Fulham, Battersea and Clapham often have higher ceilings than newer builds, which means scaffolding boards or a second pair of hands, and that shows up in the price. And the number of separate visits adds up: a job that needs the plaster to dry before a second coat or before decorating means a tradesperson coming back, which some price as part of the original quote and others charge as a separate call-out.
If the walls were recently chased out for new sockets or rewiring, check our electrician London page, since plastering after electrical first fix is one of the most common one coat jobs we're called out for across Mayfair, Marylebone and St John's Wood.
The mistake that costs twice: hiring someone to apply a one coat skim over a wall that's actually blown or damp, because the quote looked cheaper than a proper two coat job. The skim bonds to a failing surface, cracks appear within weeks to a few months, and you end up paying for the strip-out, backing coat and finish coat you were trying to avoid the first time, on top of the money already spent. If a tradesperson doesn't tap the wall and check for hollow sounds before quoting, get a second opinion before they start.
How long one coat plaster takes to dry
A thin one coat skim typically takes 2 to 4 days to dry fully in a normally ventilated room, though it will feel touch-dry and look finished within 24 hours. Painting too early is the most common follow-up mistake: fresh plaster is alkaline and will react with ordinary paint, giving patchy, flaky results. The standard advice is to use a mist coat, a watered-down first coat of emulsion, and to wait at least 5 to 7 days before painting properly, longer in cold or damp weather, longer still for thicker applications or in older solid-wall properties around Hampstead and Dulwich where drying is naturally slower.
If decorating is next on your list, our painting and decorating team can time the mist coat and final coats around the plaster's drying schedule so you're not waiting around or rushing it.
Areas we cover
We quote and carry out one coat plastering and patch repairs across Chelsea, Kensington, Wimbledon, Knightsbridge, Mayfair, Belgravia, Notting Hill, Fulham, Richmond, Battersea, Clapham and Putney, along with Marylebone, St John's Wood, Islington, Highgate, Primrose Hill, Barnes, Dulwich and Kew. Travel time and parking in central postcodes like Knightsbridge and Mayfair can add a small premium to the call-out, which we'll flag before confirming the booking. For bigger carpentry or skirting work that often goes alongside a plaster patch, see our pages on carpentry services and skirting board fitting in London.
FAQ
How much does it cost to skim a wall in London?
Skimming a single wall with one coat plaster in London typically costs £180 to £350 depending on the wall's size and condition, or £18 to £28 per m² if priced that way. Small patch repairs under 1m² usually carry a minimum charge of £150 to £220 to cover the tradesperson's travel and setup time. Prices are a guide only, so contact us for an exact quote.
Is one coat plaster as good as two coat plaster?
One coat plaster is suitable when the existing backing plaster is sound, giving a finish that's just as smooth and durable as a two coat job in that situation. It is not a substitute for two coat plastering on bare brick, blockwork, or walls where the old plaster has lost its bond, because it needs something solid underneath to adhere to.
How long does one coat plaster take to dry before painting?
One coat plaster is usually touch-dry within 24 hours but needs 5 to 7 days before it's ready for a proper paint finish, longer in cold or poorly ventilated rooms. Painting too soon causes patchy results because fresh plaster is alkaline and reacts with standard emulsion, so a watered-down mist coat is used first.
Can a handyman do one coat plastering or do I need a specialist plasterer?
Small patch repairs and single wall skims are well within a competent handyman's scope, and that's often cheaper and quicker to book than a specialist plasterer for a small job. Larger areas, full rooms, or anything involving damp or structural cracking are better handled by a dedicated plastering tradesperson who works with that material every day.
What's the difference between skimming and plastering a wall?
Skimming refers to applying the thin final finish coat that gives a wall its smooth, paintable surface, whether that's a traditional finish plaster or a one coat product. Plastering more broadly includes the backing coat too, the thicker base layer applied directly to brick or blockwork before the skim goes on, which is only needed when there's no sound existing surface to skim over.
How much does it cost to plaster a ceiling in London?
Skimming an average-sized ceiling in London typically costs £250 to £450, more than an equivalent wall because ceilings are slower to work on and usually need scaffold boards or trestles. Older properties with higher ceilings, common in Victorian terraces around Fulham, Battersea and Clapham, tend to sit at the upper end of that range. Prices are a guide only, so contact us for an exact quote.
Why is my new plaster already cracking?
Fine hairline cracks along joints usually mean scrim tape wasn't used before skimming over plasterboard joints or old crack lines. Larger or widening cracks suggest the backing plaster underneath has failed and the one coat skim was applied over a surface that couldn't support it, which means the area needs stripping back and redoing with a proper backing coat.
Do I need to move furniture and cover floors myself before a plasterer arrives?
Most tradespeople expect the room cleared of furniture and will bring their own dust sheets for floors and fittings, but this varies, so it's worth confirming when you book. Plastering is a messy job with dust and splashes, so covering carpets and removing anything you don't want marked is sensible even if the plasterer brings sheeting.
For a full breakdown of what handyman call-outs and day rates look like across London, see our handyman hourly rate guide, or browse the full list of services we cover across the city.
See also: Odd Job Man in London: Cost, Coverage and How Booking Works.
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