A fresh coat of paint can completely transform your home’s exterior—but only if it’s done right. From improper prep to using the wrong products, certain mistakes can shorten the lifespan of your paint job and waste your time and money. Here are the most common exterior painting mistakes homeowners make and how to avoid them.
1. Painting in the wrong weather conditions
Mistake: Painting when it’s too hot, too cold, too windy, or too humid.
Why it matters: Extreme temperatures or moisture can prevent paint from adhering properly and cause peeling or cracking.
How to prevent it:
- Paint when temperatures are between 10°C and 25°C
- Avoid direct sunlight and rainy days
- Check the forecast for at least 48 hours of stable conditions
Need seasonal timing advice? Our painting services team can help you choose the perfect window for your project.
2. Skipping surface preparation
Mistake: Painting over dirt, mildew, peeling paint, or chalky surfaces.
Why it matters: Paint won’t bond well to dirty or damaged surfaces, leading to early failure.
How to prevent it:
- Clean thoroughly with mild detergent or pressure washing
- Sand and scrape peeling areas
- Prime bare wood and patched spots
3. Using the wrong type of paint
Mistake: Applying interior paint outdoors or choosing a low-quality exterior formula.
Why it matters: Only exterior-grade paints are formulated to withstand UV rays, moisture, and temperature changes.
How to prevent it:
- Select premium exterior paints from our paint collection
- Match paint type to your surface (wood, stucco, brick, siding)
4. Skimping on primer
Mistake: Painting directly over bare or repaired areas without primer.
Why it matters: Primer helps paint stick better, hide imperfections, and last longer.
How to prevent it:
- Use a high-quality exterior primer suited to your surface and colour
- Tint primer to your topcoat colour when covering a dark surface
5. Applying paint too thin or too thick
Mistake: Stretching paint too far or overloading your brush/roller.
Why it matters: Too-thin coats leave uneven coverage; too-thick coats may drip and dry unevenly.
How to prevent it:
- Apply two even coats instead of one heavy coat
- Follow manufacturer’s coverage guidelines
6. Ignoring safety precautions
Mistake: Using ladders unsafely or skipping protective gear.
Why it matters: Falls and exposure to fumes are common hazards during exterior painting.
How to prevent it:
- Use stable ladders or scaffolding
- Wear protective eyewear, gloves, and masks when sanding or painting
7. Not hiring a professional when needed
Mistake: Taking on a large, complex job without the skills or tools required.
Why it matters: Professional painters can save time, ensure quality, and handle tricky details like high peaks or damaged siding.
How to prevent it:
- Use our Painter Order Form to get matched with a qualified pro
- Consult our services page for expert help
8. Forgetting ongoing maintenance
Mistake: Assuming your exterior paint will last forever.
Why it matters: Dirt, mildew, and minor damage can shorten the life of your paint job.
How to prevent it:
- Wash your home’s exterior annually
- Touch up chipped areas promptly
A professional consultation before starting can save you time and money. Contact us through our Contact Us page or visit us in-store for tailored recommendations.