How Long Does Exterior Paint Last in Vancouver? Signs It's Time to Repaint

A properly done exterior paint job in Vancouver should last 7-10 years. That's the realistic expectation with quality paint, proper prep, and good timing. A lot of paint jobs in the Lower Mainland don't meet that standard -- here's why, and how to tell when your home is due.

The 7-10 Year Norm: What It Requires

Getting 7-10 years out of exterior paint in BC's climate isn't automatic. It requires all of the following:

• Surface properly cleaned and prepped (no mold, mildew, or peeling old paint)
• Wood siding dry and below 15% moisture content at application
• Quality primer appropriate to the substrate
• At least two coats of a premium 100% acrylic exterior paint (Benjamin Moore Aura, Sherwin-Williams Duration, or equivalent)
• Applied within the May-September window when temperatures stay above 10°C

Skip any of those steps and you're looking at 4-6 years, maybe less.

What Shortens Exterior Paint Life

Poor Prep

This is the biggest one. Painting over dirt, mildew, or poorly adhered old paint is painting on a foundation that will fail. We see houses where the entire paint layer slides off in sheets because the contractor skipped surface preparation. A good prep job is 30-40% of the labour in an exterior paint project -- it's not time wasted.

Cheap Paint

Budget exterior paint typically has lower pigment load, less resin, and fewer mildew inhibitors than premium products. These formulas work in dry climates with mild UV. They don't work well in Vancouver. The false economy is real: $400 saved on paint might cost you 3 years of service life.

South-Facing UV Exposure

The south and west faces of a Vancouver home take the most UV exposure. In summer, a south-facing wall can reach 40-45°C surface temperature on a clear day. UV breaks down paint film, fades pigment, and oxidizes the resin. This is why we often recommend an extra coat on south and west exposures.

Salt Air

Waterfront properties in West Vancouver, the North Shore, Kitsilano, and English Bay face accelerated paint degradation from salt in the air. Salt attacks paint film and causes chalking to develop faster. Properties within a few blocks of the ocean should budget for the lower end of the service life range (5-7 years) unless using premium products with a specific salt air formulation.

North-Facing Moisture

Counterintuitively, north-facing surfaces also fail early -- but for the opposite reason. North-facing walls stay wet longer, dry slower, and support mildew growth more readily. In a neighbourhood with dense tree cover (common in North Van and West Van), north-facing walls can be in constant shade and moisture.

Signs Your Home Is Due for a Repaint

Chalking

Run your hand across the siding. If it comes away with a powdery chalk-like residue, the paint has oxidized. Chalking is the most common sign of paint reaching end-of-life. A small amount of chalking is normal near the end of a paint job's life. Heavy chalking means the surface needs to be washed and prepared before any new coat will adhere.

Cracking and Checking

Fine cracks in the paint surface that follow a pattern -- either along the wood grain or in a cross-hatch pattern -- indicate that the paint film has lost flexibility. This happens as the resins age and the film can no longer handle the thermal cycling that makes our climate so demanding.

Checking is surface level and can be addressed in a normal repaint with good prep. Deep cracking into the wood or substrate underneath indicates more serious moisture damage and may require wood repair before painting.

Fading

If the colour looks significantly different from photos you took when the paint was fresh, it's faded. Some colour families fade faster than others. Organic reds, bright yellows, and certain greens have lower UV stability than earth tones and blues. If your home's colours have faded significantly in 5 years, it's worth discussing more UV-stable colour choices for the repaint.

Peeling and Bubbling

Peeling paint is a symptom, not the core problem. Paint peels because something underneath failed -- moisture trapped behind the film, a failed primer coat, or paint applied to an incompatible surface. Before repainting a home with peeling paint, it's worth understanding why it peeled.

See our article on best exterior paint for Vancouver weather to understand which products handle our climate best in a repaint.

Mould and Mildew

Dark spots that look like dirt but don't wash off easily are usually mildew. Mildew grows on paint film that is frequently wet and doesn't dry quickly. It's especially common on north-facing and shaded walls.

Mildew must be killed before painting over it -- bleach wash or a commercial mildewcide solution, followed by a thorough rinse and dry. Painting over active mildew will not solve the problem; the mildew will continue growing through the new paint.

Key Takeaways

• Quality exterior paint in Vancouver lasts 7-10 years with proper prep, premium products, and correct timing
• The biggest service-life killers are poor prep, cheap paint, and painting outside the May-September window
• Chalking (powdery residue on the surface) is the clearest sign paint is near end of life
• Peeling indicates a moisture or adhesion failure -- understand the cause before repainting
• South and west-facing walls take the most UV damage; north-facing walls take the most moisture damage

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