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Apply limewash & mineral paint.
Breathable heritage finish — for pre-1900 brickwork, lime render or listed walls.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Acrylic paint over mineral
Conventional emulsion over lime wash flakes off within months. Always test with patch first.
Insufficient coats
Lime wash needs 3–5 thin coats; 2 don't give the right opacity and depth.
Hot weather application
Lime wash dries too fast in heat and chalks. Apply in cool damp conditions.
Modern weatherproofing claims
Some "modern lime washes" are acrylic-modified — defeats the breathability purpose.
Costs & timeline
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Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Lime wash per litreCovers ~5 m² per coat
£15–£35
Keim mineral paint per litreCovers ~6 m²
£30–£60
Beeck mineral paint per litrePremium German brand
£35–£70
Stripping old modern paint per m²Often necessary first
£20–£50/m²
Lime wash application per m²3–5 thin coats
£30–£70/m²
Keim application per m²2–3 coats
£40–£90/m²
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Quote spread is typically ± 18% — always get 3 quotes.
At a glance
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Lime wash and mineral paints are breathable finishes essential for solid-wall heritage properties — pre-1919 Victorian, Georgian and earlier homes. Modern acrylic emulsions trap moisture and cause damp in these buildings. Expect to pay £40–£100 per m² for UK mineral paint application.
What Does the Work Involve?
Walls are cleaned and any modern paint stripped (incompatible with mineral systems). Substrate is dampened with water. Lime wash applied in 3–5 thin coats (Limewash by Old Fashioned Milk Paint, Cornish Lime). Mineral paints (Keim, Beeck) applied to mineral substrate in 2–3 coats — bond chemically rather than mechanically. Each coat requires drying time.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Lime wash per litre | 15 | 35 | Covers ~5 m² per coat |
| Keim mineral paint per litre | 30 | 60 | Covers ~6 m² |
| Beeck mineral paint per litre | 35 | 70 | Premium German brand |
| Stripping old modern paint per m² | 20 | 50 | Often necessary first |
| Lime wash application per m² | 30 | 70 | 3–5 thin coats |
| Keim application per m² | 40 | 90 | 2–3 coats |
| Whole exterior heritage house | 3,500 | 12,000 | Including stripping |
How Long Does It Take?
Single room limewash: 2–3 days including drying between coats. Whole exterior of heritage house: 1–3 weeks plus scaffold time.
DIY or Professional?
Lime wash is DIY-able with patience. Keim and Beeck systems should be applied by trained installers — the chemistry requires specific application technique.
Choosing the Right Tradesperson
A heritage decorator with mineral paint experience. Keim and Beeck offer installer accreditation — check the directory on their UK websites. SPAB (Society for the Protection of Ancient Buildings) is a good reference source.
UK Regulations
Listed buildings: mineral paints are usually required. Conservation areas often specify breathable finishes. Solid-wall building regulations (older properties) favour breathable systems.
Common Problems
- Acrylic paint over mineral: Conventional emulsion over lime wash flakes off within months. Always test with patch first.
- Insufficient coats: Lime wash needs 3–5 thin coats; 2 don't give the right opacity and depth.
- Hot weather application: Lime wash dries too fast in heat and chalks. Apply in cool damp conditions.
- Modern weatherproofing claims: Some "modern lime washes" are acrylic-modified — defeats the breathability purpose.
Frequently Asked Questions
Why use lime wash on old houses?
Solid-wall properties move moisture through the wall. Modern acrylic paints trap it, causing damp. Lime wash and mineral paints let the wall breathe.
Lime wash vs Keim mineral paint?
Lime wash: traditional, soft chalky look, needs reapplication every 5–10 years. Keim: modern mineral paint, 15+ year life, more colour options.
Can I use lime wash inside?
Yes — gives a chalky soft finish, particularly suited to heritage properties. Cornish Lime and Bauwerk are UK suppliers.
Will lime wash come off in rain?
Properly applied lime wash carbonates with rain and CO2, becoming progressively harder. Cheap or thin applications can chalk off — buy quality.
What's the colour range?
Lime wash: limited to earth pigments — ochres, oxides, soft pastels. Keim mineral paint: full RAL and bespoke colour matching available.
Is mineral paint expensive?
2–3x conventional masonry paint. Lasts 2–3x longer and is essential for old buildings — overall cost over life is comparable.
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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