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Install garage floor & drainage.
Resin floor or polished concrete plus channel drains — keeps the garage usable in all weather.
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Costs, timelines, pitfalls and the right questions to ask before any garage doors starts on garage Floor & Drainage.
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Top tips
Hiring a garage doors, without the regret.
Four moves that separate a smooth job from a nightmare.
Cracks reopening
Filling cracks without addressing underlying movement returns issue. Sometimes needs structural investigation.
Cheap epoxy peeling
Substrate prep critical. Surface must be dry, clean, etched.
Water ingress recurring
Treating surface water doesn't fix underlying drainage issue. Address site drainage.
Damp from below
Old garages without DPM under slab. Floor lifting needed for retrofit.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Crack filling per metreEpoxy injection
£30–£80
Surface levelling self-levellerPer m²
£15–£40/m²
Epoxy floor coating per m²2–3 coats
£30–£80/m²
Polyurethane coatingPer m², more durable
£40–£120/m²
Linear drain installation per mAco channel drain
£120–£350
Sump pump installationIf water ingress
£500–£1.5k
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
Infographic · VideoThe Garage Doors briefing.
Infographic
Garage Doors quick-view
Video guide
Garage Doors explained
Garage floors need care — concrete cracks, oil stains, drainage. Expect to pay £400–£3,500 for UK garage floor repair, recoating, or refurbishment.
What Does the Work Involve?
Existing concrete assessed. Repair options: crack filling, surface levelling, full slab replacement, epoxy coating, polyurethane coating. Drainage: linear drain installation, sump pump if water ingress. Specialist contractor for epoxy and major works.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Crack filling per metre | 30 | 80 | Epoxy injection |
| Surface levelling self-leveller | 15 | 40 | Per m² |
| Epoxy floor coating per m² | 30 | 80 | 2–3 coats |
| Polyurethane coating | 40 | 120 | Per m², more durable |
| Linear drain installation per m | 120 | 350 | Aco channel drain |
| Sump pump installation | 500 | 1,500 | If water ingress |
| Full slab replacement per m² | 80 | 180 | Major work |
| Standard garage floor refurbishment | 400 | 1,800 | Typical 20 m² garage |
How Long Does It Take?
Crack repair: 1 day. Epoxy coating: 2–3 days (incl. cure). Drainage installation: 1–2 days. Slab replacement: 3–5 days.
DIY or Professional?
Crack filling: DIY. Epoxy coating: DIY possible but professional finish better. Drainage and slab replacement: builder/contractor.
Choosing the Right Tradesperson
Garage floor specialist for epoxy. General builder or groundworker for slab work. Drainage specialist for sump pump.
UK Regulations
Building Regs Part L if floor part of insulated envelope. Drainage Part H. Listed buildings need consent.
Common Problems
- Cracks reopening: Filling cracks without addressing underlying movement returns issue. Sometimes needs structural investigation.
- Cheap epoxy peeling: Substrate prep critical. Surface must be dry, clean, etched.
- Water ingress recurring: Treating surface water doesn't fix underlying drainage issue. Address site drainage.
- Damp from below: Old garages without DPM under slab. Floor lifting needed for retrofit.
Frequently Asked Questions
Epoxy floor — worth it?
For workshops or showrooms: yes — easy clean, looks professional. For occasional garage: marginal benefit.
Polyurethane vs epoxy?
Polyurethane: more flexible, withstands thermal cycling better. Epoxy: harder, more chemical-resistant. Polyurethane is the modern premium.
How long does epoxy coating last?
Quality (Watco, Wykamol): 10–15 years. Cheap DIY kits: 3–5 years.
Drainage for old garage?
Aco linear drain channel at door threshold. Falls to soakaway or sewer. £150–£500 per metre installed.
Damp floor — can I fix?
Surface coating (vapour barrier paint) helps short-term. Full fix needs floor lifting and DPM install — major work.
DIY epoxy kit?
£100–£300 for 20 m² coverage. Surface prep is the key — sand and clean thoroughly. Apply per instructions for best results.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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