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01 · Ask
Repaint or full coating system?
Refresh existing paint, or apply a 15-year coating? Describe the house and the AI tells you which suits the substrate.
Waterproof & treat damp.
Combined waterproofing and damp treatment — for cellars, basements and damp-prone walls.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Hire a weather-coating applicator. Primer, topcoat, dry weather.
Read the brief on substrates, breathability and weather conditions — then let Three local applicators quote.
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02 · Read the brief
Walk in informed
Silicone vs acrylic, breathability ratings, primer requirements, weather windows, BBA-certified systems. Know what 'guaranteed' means.
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03 · Compare
Compare 3 applicator quotes
Three local applicators quote on the same spec — coating system, prep, scaffold, guarantee — so you compare cleanly.
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Top tips
Hiring a weather coatings, without the regret.
Four moves that separate a smooth job from a nightmare.
Test the substrate first.
Cement render, pebbledash, brick — different surfaces need different coatings. A proper applicator tests adhesion before quoting.
Insist on a primer + topcoat system.
Skipping the primer halves the lifespan. A coating system (primer + 2-coat topcoat) lasts 15+ years; topcoat-only fails in 5–7.
Don't apply in wrong weather.
Most coatings need >5°C and dry for 24 hours either side. Applicators who push on in November or April are setting up failure.
Check the breathability rating.
Solid walls need breathable coatings (vapour-permeable) — silicone-based, not acrylic. Sealing solid walls traps damp.
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
Masonry paint repaint (per m²)
£18–£40/m²
Silicone weather coating (per m²)
£35–£70/m²
Pebbledash repaint (per m²)
£25–£50/m²
Whole-house weather coatingSemi-detached
£3.5k–£9k
Render repair + coating
£4k–£12k
Scaffold hire (3 weeks)
£800–£2k
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
Infographic · VideoThe Weather Coatings briefing.
Infographic
Weather Coatings quick-view
Video guide
Weather Coatings explained
Waterproofing and damp treatment — external coatings, tanking, cavity drainage. Expect to pay £500–£8,000 for UK waterproofing.
What Does the Work Involve?
PCA (Property Care Association) member surveyor diagnoses. Treatment depends: cementitious tanking, membrane systems, cavity drainage, chemical DPC injection.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Damp survey | 150 | 400 | PCA member |
| Chemical DPC injection | 500 | 2,500 | Whole wall |
| Cementitious tanking (per m²) | 80 | 200 | Cellar/basement |
| Cavity drainage membrane | 100 | 250 | Per m² basement |
| Basement waterproofing system | 3,000 | 15,000+ | Full project |
| External waterproof coating | 20 | 60 | Per m² wall |
| Penetrating damp repair | 500 | 3,000 | External |
UK Regulations
BS 8102 for waterproofing below ground. PCA standards. Insurance-backed guarantees essential.
Frequently Asked Questions
Type of damp?
Rising damp: chemical DPC. Penetrating: external repair. Condensation: ventilation.
PCA member essential?
Yes — Property Care Association regulated. Insurance-backed guarantees.
Basement waterproofing systems?
Type A: tanking. Type B: structural concrete. Type C: cavity drainage. BS 8102 advice.
How long damp treatment lasts?
Quality: 20-30 years. Insurance-backed up to 30 years.
Cheap damp specialist beware?
Yes — many over-diagnose to sell. PCA member trustworthy.
Insurance pay damp?
Sudden water ingress yes. Long-term damp no — property maintenance.
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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