How to Price Resin Flooring: Labour, Materials and Margin Guide

Quick Answer: Resin flooring in the UK prices at £40-£70/m² for a thin epoxy coating, £60-£100/m² for a self-smoothing/self-levelling system, and £90-£150/m² for a heavy-duty polyurethane or decorative flake/terrazzo finish. A typical 30m² domestic garage or kitchen runs £1,500-£3,000 installed. The single biggest cost driver is substrate preparation — diamond grinding or shot-blasting the slab is non-negotiable and routinely accounts for 25-40% of the labour.

Summary

Resin flooring covers a wide span of systems — from a £25/m² roller-applied epoxy garage coating to a £150/m² decorative poured terrazzo in a retail unit. Pricing the same square metre figure across all of them is the most common quoting mistake. The substrate, the system thickness, and the finish drive the price far more than the floor area does, and customers rarely understand why two "resin floor" quotes can differ by 3x.

The work is unforgiving. Resin is a chemical product cured in situ, and it shows every defect in the prep underneath it. A poorly ground slab, residual moisture, or laitance left on the concrete will cause delamination, blistering, or pinholing — failures that mean stripping and redoing the floor at the installer's cost. This is why experienced resin floorers load the prep line heavily and refuse to quote without a moisture reading on the slab.

This guide breaks resin flooring into its real cost components: substrate testing and prep, primer, the resin system itself, and the finishing/sealing coats. It covers domestic (garages, kitchens, utility rooms), light commercial (showrooms, gyms), and the moisture and prep risks that destroy margin if missed. For decorative concrete and screed alternatives see concrete slab pricing guide; for tiled floors see bathroom tiling pricing guide.

Key Facts

System costs (materials, per m²)

Labour and ancillary costs

Regulatory and standards

Quick Reference Table

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System Thickness Materials/m² Labour/m² Installed /m² Typical Use
Epoxy roller coating 0.3mm £8-£18 £12-£25 £25-£45 Garage, store
Epoxy self-smoothing 2-3mm £18-£35 £25-£45 £50-£90 Kitchen, utility
Decorative flake 1-2mm £20-£40 £30-£50 £55-£100 Showroom, garage
Metallic epoxy 2mm £25-£50 £40-£70 £75-£140 Retail, feature floor
PU screed heavy duty 4-9mm £30-£60 £40-£70 £80-£150 Kitchen prep, industrial
Resin terrazzo 6-12mm £40-£80 £60-£100 £110-£200 Premium commercial

Add grinding/prep £8-£18/m², surface DPM £8-£16/m² where moisture exceeds 75% RH, and a £350-£600 minimum on small jobs.

Detailed Guidance

Substrate preparation — where the money and risk live

Mechanical preparation is the foundation of every resin floor and the line customers most often want cut. It cannot be cut. New concrete carries laitance (a weak surface skin of fines and cement) that must be removed; old concrete carries contamination, sealers, paint, and grease. Resin bonds to a clean, open, mechanically profiled surface — never to a smooth, sealed, or contaminated one.

The two standard methods:

  1. Diamond grinding — rotary grinder with diamond segments, dust-extracted. Standard for domestic and light commercial. £8-£18/m². Produces a profile equivalent to ICRI CSP 1-2, suitable for thin coatings and self-smoothing systems.
  2. Captive shot-blasting — steel shot fired and recovered, leaving a deeper profile (CSP 3-5). Used for thicker PU screeds and larger industrial areas. £6-£12/m² at scale, but mobilisation makes it uneconomic below ~100m².

Always quote prep as a separate line. If the slab needs crack-chasing, joint filling, or patch repairs, these are additional — £15-£40 per linear metre of crack repaired with resin mortar.

Moisture — the failure that ends careers

Concrete must be dry enough before resin goes down, or hydrostatic pressure pushes through and blisters or delaminates the floor. BS 8203 sets the limit at 75% relative humidity, measured with an insulated hygrometer box left on the slab for at least 72 hours, or via a digital RH probe inserted into the slab.

A new ground-bearing slab takes roughly one month of drying per 25mm of thickness — a 150mm slab is six months from pour to acceptably dry under ideal conditions. Few customers will wait. The solution is a surface-applied epoxy damp-proof membrane (DPM): two coats forming a moisture barrier, allowing resin to be laid over a slab up to ~98% RH. Budget £8-£16/m² for the DPM and always test before quoting it in or out. Never assume — a single moisture test (£40-£90) is cheap insurance against a relaid floor.

System selection by use

Garage / store (budget): A two-coat epoxy roller coating with an anti-slip broadcast. £25-£45/m² installed. Looks smart, resists oil and tyre marks, but is thin — it will wear at pivot points under heavy use.

Domestic kitchen / utility: Self-smoothing epoxy, 2-3mm, seamless and hygienic. £50-£90/m². Comfortable underfoot when warm, easy to clean, hides minor substrate undulation.

Showroom / feature floor: Decorative flake or metallic epoxy. £55-£140/m². The flake system hides dirt and scratches; metallic gives a poured-marble look but is slippery when wet and not for wet areas.

Commercial kitchen / wet process: Polyurethane screed, 6-9mm, with coved upstands. £80-£150/m². Withstands thermal shock (steam cleaning, boiling spills) that cracks epoxy. The only correct choice where HACCP hygiene and hot-wash regimes apply.

Coving, detailing and edges

Seamless coved skirting (a resin upstand instead of a tiled or timber skirting) is standard in commercial and hygiene environments and adds £12-£25 per linear metre. Drainage falls, threshold detailing, and expansion joint treatment are all separate line items — never bundle them into the area rate. A floor that "looks finished" but has unsealed edges will fail at the perimeter first.

Hidden costs and margin protection

The five most-missed lines: (1) slab levelling — a floor out of level needs a levelling screed before resin, £10-£25/m²; (2) anti-slip rating — Pendulum Test Value (PTV ≥36 for wet areas) may demand an aggressive broadcast that needs extra sealer; (3) out-of-hours working — commercial jobs often demand night/weekend access, +20-40% labour; (4) temperature — resin won't cure below ~10°C, so winter garage jobs may need heating; (5) second mobilisation — multi-coat systems with overnight cures mean two or three site visits, each carrying travel and set-up cost.

Apply a 10-20% risk premium on any slab you haven't core-tested for moisture and any pre-1990 slab of unknown composition (asphalt, magnesite, or pitch-mastic subfloors all reject resin).

Frequently Asked Questions

Why is resin flooring so much more than paint?

Garage floor "paint" is a single-pack acrylic or a thin epoxy that you roll on with no prep — it peels within a year. A specified resin system includes mechanical prep to a measured profile, a primer matched to the substrate, a build coat of the correct thickness, and a sealer. The material is a fraction of the cost; the prep and the skilled application are what you pay for, and they are what make the floor last 10-20 years instead of 12 months.

Can resin be laid over tiles or an existing floor?

Sometimes, but it is higher risk. Tiles must be sound, mechanically abraded, and primed with a tile-specific epoxy primer; any drummy (hollow-sounding) tiles must come up first. Vinyl, lino, and painted floors generally must be removed. Always price removal and disposal separately and warn the customer that bonding to an existing finish carries no long-term guarantee compared with bonding to a prepared slab.

How long before the floor can be used?

Typical epoxy systems take foot traffic after 24 hours, light traffic after 48-72 hours, and full chemical/mechanical cure after 7 days at 20°C. Cure slows dramatically in cold conditions — below 10°C a floor may not cure at all. Build the cure schedule into the quote and the customer's expectations; rushing traffic onto a green floor marks it permanently.

Do I need to remove the old garage floor first?

Not usually — you prepare the existing slab in place. But you must grind off any existing coating, sealer, or paint, repair cracks and spalling, and moisture-test. A slab with a previous failed coating costs more to prep, not less, because removing the old film is harder than grinding bare concrete.

Regulations & Standards