Masonry protection cream is a powerful, invisible barrier that helps protect brick, stone, and concrete walls from penetrating damp, frost damage, and long-term decay. If you want to futureproof your home against the unpredictable UK weather, applying a high-quality masonry cream is one of the best preventative measures you can take. In this guide, we’ll walk you through how to use masonry protection cream properly, including tools, techniques, and expert tips.
What Is Masonry Protection Cream?
Masonry protection cream is a breathable, silane/siloxane-based waterproofing treatment designed to penetrate deep into porous masonry surfaces. Once cured, it forms a water-repellent barrier beneath the surface, helping to:
- Repel rainwater
- Prevent frost damage
- Improve thermal efficiency
- Protect against efflorescence and damp
Unlike traditional waterproof paints, masonry cream is colourless and doesn’t affect the appearance of your brickwork.
When Should You Apply Masonry Cream?
The ideal time to apply masonry protection cream in the UK is during dry, mild weather — typically late spring through early autumn. You need at least 24 hours without rain and temperatures above 5°C. Avoid applying in freezing conditions or during heavy summer sun.
Tools & Materials You’ll Need
- Masonry protection cream
- Masonry cleaner or fungicidal wash
- Stiff-bristled brush or pressure washer
- Protective gloves and safety goggles
- Masonry repair mortar or filler (for cracks)
- Masking tape and dust sheets
- Large masonry brush or roller (alternatively, airless sprayer)
How to Apply Masonry Protection Cream (Step-by-Step)
1. Inspect and Repair the Wall
Check for any cracks, loose pointing, or damaged bricks.
- Use mortar repair for small cracks.
- Repoint loose mortar joints.
- Allow any repairs to dry fully before application (usually 3–7 days).
Tip: Applying masonry cream to damaged surfaces may trap moisture instead of preventing it.
2. Clean the Surface Thoroughly
Use a stiff brush, pressure washer, or masonry cleaner to remove:
- Dirt
- Moss and algae
- Efflorescence (white salt deposits)
If needed, apply a fungicidal wash to kill mould or mildew. Allow the wall to dry for at least 24–48 hours before applying the cream.
3. Mask and Protect Adjacent Areas
Use dust sheets or masking tape to protect windows, doors, painted sills, and plants. Masonry cream can stain non-porous surfaces like glass, metal, or plastic.
4. Apply the Masonry Cream
You can use a roller, brush, or sprayer depending on the area size and surface texture.
- Brush: Ideal for small areas or detailed work (e.g. near window frames)
- Roller: Best for flat, wide surfaces
- Sprayer: Fastest method for large walls, but requires PPE and precision
Apply a generous, even coat, ensuring the cream is absorbed but doesn’t run or drip.
5. Allow It to Soak In and Cure
After application, the cream will gradually soak into the surface. Curing time is typically 6–12 hours for initial drying, but full performance develops over 24–48 hours.
Avoid rain exposure during this time. The surface will look wet initially but will dry back to its original appearance.
Coverage Guide
Most masonry protection creams cover around 5m² per litre on standard brickwork. However, coverage varies based on:
- Brick or stone porosity
- Surface roughness
- Weather conditions
Always check the manufacturer’s label for exact instructions and test a small patch if in doubt.
Maintenance Tips
- Reapply every 20–30 years or as required based on weather exposure.
- Re-treat areas with significant exposure to driving rain or salt-laden winds sooner.
- Inspect annually for cracks or damaged pointing to maintain effectiveness.
Benefits of Using Masonry Cream
- ✅ Prevents Penetrating Damp – Keeps walls dry and helps avoid mould growth.
- ✅ Improves Energy Efficiency – Drier walls retain heat better, reducing heating bills.
- ✅ Maintains Aesthetic – Clear finish preserves the natural look of stone or brick.
- ✅ Long-Lasting – Single treatment can last for decades.
- ✅ Protects Against Frost Damage – Reduces cracking and spalling in cold weather.
Common Mistakes to Avoid
- ❌ Applying to wet walls – Moisture in the wall prevents proper penetration.
- ❌ Skipping cleaning – Dirt, moss, or paint blocks the cream from being absorbed.
- ❌ Using it on non-porous surfaces – Masonry cream is not suitable for painted or sealed walls.
- ❌ Not checking the forecast – A surprise rain shower can ruin your hard work!
Final Thoughts
Applying masonry protection cream is a simple yet highly effective DIY task that can add decades of life to your property. It protects your home from the harsh UK weather while maintaining the appearance of your exterior walls. With just a few tools and a dry weekend, you can safeguard your home from damp, reduce energy bills, and avoid costly repairs.
FAQs
Q: Can I apply masonry protection cream to painted walls?
A: No. It only works on porous surfaces. Remove any paint before application.
Q: Is masonry cream safe for listed buildings?
A: Yes, as long as it’s breathable and doesn’t alter the appearance. Always consult with your local conservation officer first.
Q: How long does masonry cream last?
A: Many high-quality products offer protection for 20–30 years with a single application.
Related Products on DIY Refurb
- Masonry Protection Cream (5L)
- Masonry Cleaner (2L)
- Fungicidal Masonry Cleaner
- Masonry Application Brush
Our complete guide on Masonry Protection.
Maintenance Schedule
| Task | Recommended Frequency |
|---|---|
| Inspect exterior walls for cracks or damp | Every Spring |
| Clean moss, algae, and dirt from surfaces | Every 2 years |
| Repoint any loose or missing mortar joints | As needed (typically every 10–15 years) |
| Reapply masonry protection cream | Every 20–30 years |
