South African summers bring intense UV exposure, sudden thunderstorms, humidity, and dust that can rapidly deteriorate exterior walls. Without proper preparation, homeowners and property managers may encounter peeling, fading, cracking, and moisture issues much sooner than expected. Fortunately, with good preparation and the right products, you can strengthen your exterior walls before the heat peaks.
Why South African Summers Are Hard on Exterior Walls
• Intense UV radiation causes fading and chalking
• High temperatures leading to expansion and contraction of surfaces
• Heavy rainfall and sudden downpours are increasing moisture penetration
• Dust, humidity, and coastal salts are accelerating degradation
Step-by-Step Preparation Guide
1. Assess the Condition of Your Walls
Check for chalking, cracks, peeling, algae, fungal growth, efflorescence, or moisture issues.
2. Clean the Surface Thoroughly
• High-pressure wash (180 bar).
• Use Prominent Fungal Wash to remove growth.
• Treat efflorescence or salts with diluted Spirits of Salt followed by GP Cleaner.
• Allow surfaces to dry to <15% moisture.
3. Repair Before Repainting
Prime open cracks using Prominent Damp Cure
• Fill cracks with Prominent Crack Filler.
• Sand filler to smooth out the surface.
• Primed filled areas with Prominent Damp Cure.
4. Apply the Correct Primer
• Plaster Primer for new or porous plaster
• Premium Ultra Prime for excellent adhesion and stain blocking
• Surface Restorer for chalking surfaces
This step ensures durability in the face of extreme heat and UV exposure during the summer.
5. Choose the Right Exterior Topcoat
Prominent Paints topcoats are engineered for harsh South African conditions.
Recommended ranges:
• Prominent Neuklad – Neuklad (15-year protection)
• Premium Range (12-year protection)
Select Range (7-year protection)
• Speciality waterproofing solutions for parapets and high-exposure zones
6. Pay Attention to High-Stress Zones
• Parapets and flat walls need waterproofing.
• West- and north-facing walls need UV-resistant coatings.
• Coastal homes require regular rinsing and anti-corrosion systems.
• High-humidity and valley areas benefit from breathable systems.
7. Maintain Throughout Summer
• Rinse dust and salt deposits every few months.
• Remove algae early.
• Check gutters and downpipes.
• Repair small cracks before rainstorms.
Preparing your exterior walls before summer helps prevent damage, extend paint life, and maintain a beautiful finish. Prominent Paints offers expert guidance, premium coatings, and tailored support to help you achieve lasting results under South Africa’s demanding summer conditions.
Come in and talk to us or one of our 300-plus dealers about how we can help protect your walls this summer! https://www.prominentpaints.co.za/store-locator/