How to Price Coving Installation: Labour, Materials and Margin Guide
Quick Answer: Standard plaster or lightweight coving fitting in the UK typically runs £8–£18 per linear metre supply-and-fit for plain profiles, with most rooms landing at £150–£400 once labour, materials and making good are included. The two biggest cost drivers are profile size (a small 90mm cove is far cheaper than a 127mm+ or ornate run) and material type (polystyrene is cheapest, ornate fibrous plaster cornice the most expensive). Painting is almost always quoted separately.
Summary
Coving (also called cornice when it is more ornamental) is the moulding that runs along the join between wall and ceiling. It hides cracks and shadow gaps, adds a finished period or contemporary look, and is one of the most common small finishing jobs a plasterer, decorator or carpenter is asked to quote. Pricing it well means understanding that the headline "per metre" rate hides a lot of variation — a plain 90mm gypsum cove in a square box room is a quick job, while a deep ornate cornice in a bay-windowed Victorian front room with out-of-square walls is a different trade entirely.
For quoting purposes, the job breaks down into measuring the perimeter, choosing a material and profile, cutting and fitting (mitres at every internal and external corner), making good and caulking the joints, and — usually as a separate line — priming and painting. The cheapest installs use polystyrene or duropolymer coving stuck up with adhesive; the most expensive use cast fibrous plaster or hand-run in-situ plaster cornice that may need restoration skills. A realistic 2026 quote should price the perimeter in linear metres, add a per-metre or per-room labour figure that reflects profile complexity, and add a sensible allowance for adhesive, fixings, filler, scrim and waste.
This guide gives realistic UK ranges, room-by-room examples, the inclusions and exclusions to spell out on the quote, and the common mistakes that turn a profitable small job into a loss — chiefly under-measuring corners and bay windows, and not allowing for ceilings or walls that are not flat.
Key Facts
- Plain lightweight / gypsum coving (supply & fit) — £8–£18 per linear metre; profiles commonly 90mm, 100mm, 127mm
- Polystyrene / duropolymer coving (supply & fit) — £6–£12 per linear metre; lightest, cheapest, DIY-friendly
- Paper-faced plaster coving — £10–£18 per linear metre; paintable, crisp profile, mid-range
- Plaster of paris / traditional gypsum cornice — £15–£35 per linear metre; heavier, needs more skill and fixing
- Ornate / period fibrous plaster cornice — £35–£120+ per linear metre; deep mouldings, egg-and-dart, dentil detail
- In-situ run / restoration cornice — £80–£250+ per linear metre; specialist hand-run work, rarely a quick quote
- Profile size matters — small (90mm) is fast; 127mm+ is heavier, more cuts, more waste
- Labour rate of thumb — a decorator/plasterer fits roughly 15–30 linear metres of plain cove per day
- Day rate (most regions) — £180–£280 per day for a fitter; higher in London/South East
- Adhesive coverage — one tub of coving adhesive covers roughly 5–10 linear metres depending on profile
- Mitres — every internal and external corner is a hand-cut mitre; corners drive labour, not straight runs
- Making good — caulk to wall/ceiling, fill mitre joints, sand; budget time even on "easy" rooms
- Painting — usually a separate line; a coat or two of emulsion or eggshell on top
- Minimum charge / call-out — many tradespeople apply a £120–£200 minimum for a single small room
- Waste allowance — add 10–15% to measured length for cuts, mitres and breakages
- VAT — add 20% if VAT-registered; most sole-trader fitters under the threshold do not charge it
Quick Reference Table
Spending too long on quotes? squote turns a 2-minute voice recording into a professional quote.
Try squote free →| Type / Room | Typical Cost | Notes |
|---|---|---|
| Polystyrene / duropolymer cove | £6–£12 /m | Cheapest; adhesive-fixed; light profiles |
| Plain lightweight / gypsum cove | £8–£18 /m | Most common; 90–127mm |
| Paper-faced plaster cove | £10–£18 /m | Crisp, paintable, mid-range |
| Plaster of paris / traditional cornice | £15–£35 /m | Heavier, more skill |
| Ornate / period fibrous cornice | £35–£120+ /m | Deep mouldings, detail work |
| In-situ run / restoration | £80–£250+ /m | Specialist; bespoke |
| Small bedroom (approx. 12m perimeter) | £150–£280 | Plain cove, square room |
| Average living room (approx. 16m) | £200–£380 | Plain cove, simple corners |
| Living room with bay window (approx. 18m) | £280–£500 | Extra mitres at bay angles |
| Hallway / landing (long runs, many corners) | £250–£500 | Corner-heavy; access matters |
| Period room, ornate cornice (approx. 16m) | £700–£2,000+ | Material + skill premium |
| Whole 3-bed house, plain cove | £1,200–£2,500 | Volume can lower per-metre |
Detailed Guidance
Material Types and Cost
The material you fit sets the floor on the price and signals the kind of job it is.
Polystyrene and duropolymer are the lightest and cheapest. Polystyrene is bottom-of-market — it stays up with adhesive, takes paint, but dents easily and looks plasticky on close inspection. Duropolymer (a denser extruded foam) is a step up: crisper detail, more rigid, popular for clean modern profiles. Both are fast to fit because they are light and forgiving, which is why supply-and-fit can dip to £6–£12 per metre.
Lightweight and gypsum coving is the everyday choice. Sold in 2m or 3m lengths, it is a plaster-cored cove that fixes with adhesive and sometimes screws on longer runs. It paints well and gives a proper solid finish. Most plain-room quotes sit here at £8–£18 per metre supply-and-fit.
Paper-faced plaster coving wraps a plaster core in a paper face that takes paint beautifully and holds a crisp edge. Slightly more money than bare gypsum but a cleaner result, so it lands £10–£18 per metre.
Plaster of paris and traditional gypsum cornice are heavier, cast profiles. They need more careful fixing (adhesive plus mechanical fixings on bigger sections) and more skill to mitre cleanly, pushing rates to £15–£35 per metre.
Ornate and period fibrous plaster cornice is a different world — deep mouldings with dentils, egg-and-dart, acanthus leaf and so on. Material alone can be £30–£80+ per metre before fitting, and the labour to fix and joint it convincingly is significant. Budget £35–£120+ per metre, more for very deep or bespoke sections.
Measuring and Pricing per Metre
Always price off the measured perimeter, not a guess. Measure each wall, add them up, then add a 10–15% waste allowance for cuts, mitres and the occasional snapped length. For a rectangular room, perimeter is simply 2 × (length + width); for an L-shaped or bay room, walk it wall by wall.
A clean way to build the quote:
- Measure perimeter in linear metres.
- Add waste (10–15%).
- Multiply by a supply-and-fit rate appropriate to the material and profile.
- Add a fixed allowance for making good and caulking if not already baked into the rate.
- Apply a minimum charge if the room is small.
- Quote painting separately (or note "by others").
The per-metre rate is an average — it assumes a reasonable mix of straight runs and corners. If a room is unusually corner-heavy (a hallway, a room with chimney breast and alcoves, a bay), the effective rate rises because corners are slow.
Fixing Methods
Most plain coving is adhesive-fixed. Coving adhesive (a gap-filling plaster-based or ready-mixed adhesive) is buttered onto the two contact edges, the cove is pressed home, and excess is wiped to fill the joint as you go. One tub covers roughly 5–10 metres depending on profile size.
Heavier or longer sections may also need mechanical fixings — screws or lost-head nails into the wall or ceiling, with heads sunk and filled. This is normal on large gypsum or fibrous cornice and adds a little time per length.
On plasterboard ceilings, scrim (jointing tape) may be used at the cove-to-ceiling line to reduce future cracking where there is movement, particularly on new boards or over a board joint. Note this on the quote if you are doing it — it is cheap material but worth a line.
Ornate and Period Cornice
Period restoration is the part of this trade that bears almost no relation to the plain per-metre figure, and it is where quotes most often go wrong. Reasons it costs much more:
- Material cost is high — deep fibrous sections are expensive and sometimes have to be matched to an existing profile, which may mean a bespoke mould being taken and cast.
- Matching existing runs in one room (e.g. replacing a damaged section) requires either an off-the-shelf profile that happens to match or a cast taken from the surviving cornice. The casting step alone can run into hundreds of pounds.
- In-situ running — hand-running a plaster cornice on site with a profile former — is a genuine specialist skill, slow, and priced accordingly (£80–£250+ per metre).
- Repair vs replace decisions, careful removal of old material, and substrate repair all add time.
If you are not a fibrous plasterer, quote period work as "subject to survey" or refer it on. Do not apply a plain-cove per-metre rate to an ornate room.
Labour and Margin
For plain work, think in days as a sanity check on the per-metre figure. A competent fitter manages roughly 15–30 linear metres of plain cove per day depending on profile size, corner count and access. At a day rate of £180–£280, that implies a labour cost of roughly £6–£18 per metre — which is why the supply-and-fit rates above sit where they do.
On materials, mark up the cove, adhesive, filler and consumables at your normal rate (commonly 10–20%) to cover wastage, collection time and handling. Keep the markup in your own pricing — never show it as a separate line on the customer quote; quote a clean supply-and-fit rate or a fixed room price.
Protect your margin on small jobs with a minimum charge (£120–£200 is common for a single room). A 12-metre bedroom at £12/metre is only £144 of "metre" value, but you still have travel, setup, a tub of adhesive and making good — the minimum charge stops that job losing money.
Common Mistakes
- Forgetting mitre time at corners. Straight runs are fast; corners are slow. A room with many internal and external corners (chimney breast, alcoves) takes far longer than its perimeter suggests.
- Bay windows. Bay angles are rarely 90 degrees and often not equal, so each mitre is a custom cut. Under-pricing bays is the single most common coving quoting error — add explicit time.
- Assuming the ceiling and walls are flat and square. In older houses they rarely are. A bowed wall or sagging ceiling means the cove will not sit tight, so you spend time packing, scribing and filling. Inspect before quoting.
- No waste allowance. Quoting off bare measured length with no 10–15% buffer means the first snapped length or botched mitre eats the margin.
- Bundling in painting without saying so. Decide whether painting is in or out and state it. Most fitters exclude it.
- Ignoring access. Stairwells, landings and high ceilings need extra setup (towers, hop-ups) and slow everything down.
- Treating ornate work as plain work. A period cornice at a plain-cove rate is a guaranteed loss.
Frequently Asked Questions
How much does it cost to fit coving per metre?
For plain lightweight or gypsum coving, expect £8–£18 per linear metre supply-and-fit in 2026, with polystyrene and duropolymer a little cheaper at £6–£12. Ornate or period cornice is far more — £35 to well over £100 per metre. The rate assumes a normal mix of straight runs and corners; corner-heavy rooms cost more per effective metre.
What is the cheapest type of coving?
Polystyrene is the cheapest material and the cheapest to fit, because it is light and goes up with adhesive only. Duropolymer is slightly more but looks crisper and is more durable. The trade-off is that foam covings can dent and, on close inspection, look less solid than a plaster-cored cove. For a budget job they are the obvious choice; for a premium finish, gypsum or paper-faced plaster is worth the difference.
Plaster or polystyrene coving — which should I quote?
Plaster (or lightweight gypsum) gives a solid, paintable, crisp finish and is the standard for most quality work; polystyrene/duropolymer is cheaper and faster but lighter-feeling. For new-build or budget rooms, foam is fine. For period properties, deeper profiles or where the customer wants a proper finish, quote plaster. Match the material to the room and the budget rather than defaulting to one.
Is painting included in a coving quote?
Usually not. Most fitters quote supply-and-fit of the coving and making good, and price painting (priming and one or two coats of emulsion or eggshell) as a separate line or leave it "by others". Always state on the quote whether painting is included, because customers frequently assume it is.
Why does ornate period cornice cost so much more?
Three reasons: the material itself is expensive (deep fibrous sections, sometimes bespoke), matching an existing profile may require a mould being taken and casting done, and fixing and jointing deep ornate sections — or hand-running cornice in situ — is a specialist, slow skill. A plain per-metre rate does not apply; period work should be surveyed and quoted on its own terms.
Regulations & Standards
Coving and cornice installation is a finishing trade and is largely non-regulated. In normal circumstances no Building Regulations approval is required to fit decorative coving, as it is cosmetic and non-structural.
The main standards point worth noting is fire performance of certain plastic (polystyrene/foam) covings. Combustible plastic mouldings have a reaction-to-fire classification under the European/UK system (Euroclass, per BS EN 13501-1). For most domestic rooms this is not a barrier, but in escape routes, communal areas of flats, or other higher-risk locations, the reaction-to-fire class of any combustible moulding should be checked against the product's technical data and relevant fire-safety guidance before specifying. Plaster-based covings are non-combustible and avoid this question entirely.
In listed buildings or conservation areas, altering or replacing original cornice may engage listed building consent or conservation controls. When in doubt, advise the customer to check before original mouldings are removed or changed.
This section deliberately avoids citing regulation numbers that do not apply — for standard domestic coving, treat it as an unregulated decorative finish and check product fire data only where the location demands it.
British Gypsum — Cove technical and installation guidance — manufacturer technical data for plaster cove products
Saint-Gobain / Gyproc product information — plaster and gypsum moulding specifications
BS EN 13501-1 — Fire classification of construction products (reaction to fire) — standard governing Euroclass reaction-to-fire ratings
Historic England — guidance on plasterwork and cornice in historic buildings — context for period/listed cornice work
Planning Portal — when Building Regulations and listed building consent apply — UK consent guidance