A good exterior wall paint has to do two jobs that sound contradictory: keep rain out, and let moisture inside the wall escape. Caparol Muresko does both. It is a silane-modified acrylic masonry paint – Caparol calls the technology SilaCryl – that is highly water-repellent yet breathable.
What makes Muresko different?
Standard acrylic masonry paints form a film that can trap moisture in the wall. Muresko adds silane, which makes the surface strongly water-repellent so rain beads off, while the coating stays open enough for water vapour to escape. It is also alkali-resistant and has film protection against algae and fungus – a big plus on shaded or north-facing walls.
Caparol Muresko technical specifications
| Property | Specification |
|---|---|
| Type | Water-based silane-modified acrylic (SilaCryl) |
| Finish | Matt (G3) |
| Consumption | Approx. 200 ml/m² per coat (about 5 m²/L) |
| Coats | Two recommended for best algae and fungus protection |
| Touch dry | About 3 hours |
| Recoatable | About 6 hours |
| Fully dry | About 3 days |
| VOC | Under 20 g/L |
| Use | Exterior only |
| Substrates | Render, concrete, brick, fibre cement, aerated concrete, sound existing masonry paint |
| Colours | White, or mixed to order |
Benefits at a glance
- Highly water-repellent – rain runs off
- Breathable – lets walls dry out
- Film protection against algae and fungus
- Alkali-resistant
- Good adhesion to most masonry surfaces
- Durable matt finish in thousands of colours
How to paint exterior walls with Muresko
1. Inspect and repair
Fix cracks, loose render and any leaks from gutters or downpipes before you paint.
2. Clean
Remove dirt, dust and loose material. Treat algae and moss with a suitable fungicidal wash, rinse and let the wall dry.
3. Prime if needed
Absorbent, powdery or chalky surfaces may need a primer or stabiliser. Ask us and we will recommend the right Caparol primer for your wall.
4. Apply two coats
Use a masonry roller or brush, working from top to bottom in sections and keeping a wet edge. Allow around 6 hours between coats. Do not paint in rain, frost, strong wind or direct hot sun.
How much Muresko do I need?
At about 200 ml per square metre per coat, allow roughly 0.4 litres per m² for two coats. A 40 m² wall would need around 16 litres. Rough or very absorbent surfaces will use more.
Muresko vs Johnstone's Stormshield
Both are excellent. Johnstone's Stormshield Smooth Masonry is known for being rain resistant in 20 minutes and a 15+ year life expectancy. Muresko stands out for its breathability and built-in algae and fungus protection. If your walls are shaded, damp-prone or older, Muresko is often the better fit. For very old or lime-rendered walls, read mineral paint vs masonry paint.
Frequently asked questions
Is Muresko breathable?
Yes. It is highly water-repellent but remains breathable, allowing walls to dry out.
Can Muresko be used indoors?
No, it is for exterior use only.
How many coats of Muresko do I need?
Two coats are recommended, especially for the best protection against algae and fungus.
Can Muresko be tinted?
Yes. We mix it to order in a wide range of colours, as well as white.
Buy Caparol Muresko from Dawes
Dawes is your local decorating centre in West London. We mix Caparol Muresko to order in our store at 158–160 Goldhawk Road, W12 8HJ, or you can order online for delivery anywhere in the UK. Delivery is free on orders over £50, and if you need it fast, our Priority service delivers the next working day when you order by 1pm. Trade accounts are available.
Not sure which product is right for your job? Call us on 020 8748 6711, email sales@dawespaints.co.uk or pop into the shop – we are open Monday to Friday 7am–5pm and Saturday 8am–4pm.
See the full Caparol range.