How Long Does Exterior Paint Last in BC?
Call (604) 417-6483One of the most common questions we get at Texora Painting & Drywall from homeowners across Tsawwassen, Ladner, Delta, and Port Coquitlam is: "How long should my exterior paint last?" The short answer is 7 to 10 years for a quality job, but the real answer depends on a handful of factors that are mostly within your control.
If you are planning a repaint, our exterior painting in Delta page covers what the prep involves and what is in scope before you get a quote. Inside the house, our interior painting page lists the walls, ceilings, trim and doors we paint.
The BC climate factor
Unlike Alberta or Ontario, where the primary challenge is freeze-thaw cycling, coastal BC hits a home's exterior from several directions at once:
- High annual rainfall: Metro Vancouver and the surrounding areas, including Delta, Tsawwassen, and Ladner, receive 1,000 to 1,500 mm of rain per year.
- Persistent humidity: Coastal humidity keeps exterior surfaces damp longer than inland, especially north-facing walls that rarely see direct sun.
- Salt air: Tsawwassen sits right on the Strait of Georgia, and salt in the air attracts and holds moisture against a home's siding.
- UV radiation: BC summers bring intense UV on south- and west-facing walls, and UV breaks down paint binders, causing fading and chalking.
How long paint lasts on each surface type
Wood siding (cedar, fir, pine)
Wood is the most common siding material on older homes in Delta, Tsawwassen, and Ladner, and it's also the most demanding substrate to paint. Quality latex paint on properly prepared wood siding in BC typically lasts 5 to 8 years. Soft or rotten boards, fascia and window sills have to be repaired before the paint goes on, or the new coat fails early.
Cedar is prone to tannin bleed-through if an oil-based primer wasn't used first, and because wood swells and shrinks with moisture, flexible acrylic paints outlast oil-based coatings on it in this climate.
Fibre cement siding (HardiePlank and similar)
Fibre cement is the material of choice on many newer BC homes, and it holds paint significantly better than raw wood. A properly primed and painted fibre cement surface in the Lower Mainland can realistically hold a quality exterior finish for 10 to 15 years, particularly if a high-build acrylic formula is used.
Stucco
Stucco is porous, so it takes a breathable elastomeric coating that bridges hairline cracks and lets water vapour out while keeping liquid water out. A well-applied elastomeric coat on stucco can last 10 to 12 years in the Lower Mainland.
Brick and masonry
Painted brick and masonry holds paint longest of all: 15 to 20 years is achievable with a quality masonry paint and proper alkali-resistant primer. The caveat: once you paint brick, you need to keep painting it, as removing the paint without damaging the brick face is difficult.
South-facing walls take heavy UV and fade sooner, while north-facing walls stay damp longer and are more prone to mold, mildew and moisture-driven peeling. A paint with UV inhibitors is worth the extra cost on south exposures; a mildew-resistant formula is the priority on north and west walls.
Signs it's time to repaint
Rather than painting on a fixed schedule, watch your home's exterior for these signs that the paint film is reaching end of life:
- Chalking: Run your hand across the siding; a powdery residue means the binder has broken down.
- Cracking and flaking: Small cracks that expose the substrate mean moisture is getting behind the film.
- Peeling: Peeling almost always points to moisture, so check that gutters and downspouts carry water clear of the siding and inspect window and door caulking before repainting.
- Fading: A big colour change, especially on south-facing walls, means UV has used up the paint's UV-blocking pigments.
- Mold or mildew: Black or green growth, especially on north and west walls or behind overhanging trees, means the paint's mildewcide additives are spent.
- Exposed bare wood or substrate: Wood left without a paint film can absorb enough rain to start rotting within a single BC wet season.
What makes paint last longer in BC
How long an exterior paint job lasts depends as much on process and product as on the climate.
1. Proper surface preparation
Scrape all loose paint, sand the edges smooth and replace any rotted wood before painting.
2. Quality primer
For wood siding, an oil-based or shellac primer seals tannins and provides a superior bond for the topcoat. For fibre cement and other substrates, a dedicated exterior primer is always better than relying on "self-priming" topcoats.
3. Two coats of premium topcoat
Two full coats of a premium acrylic exterior paint (Benjamin Moore Aura, Sherwin-Williams Duration or similar) give the film build BC's climate needs, which a single coat does not, however thick.
4. Caulking all penetrations and joints
Water that gets behind the paint at window trim, door frames and siding joints causes peeling from the back, so every joint gets a high-quality paintable caulk.
5. Painting at the right time
In BC, the ideal painting window is late spring through early fall (typically May through September), when daytime temperatures are consistently above 10°C and rain is less frequent. Painting in cool, damp conditions prevents proper curing and shortens lifespan.
Repainting while the existing paint is fading or chalking but still intact costs far less than waiting until it peels, because water-damaged siding has to be replaced before it can be repainted.
What to expect from an exterior repaint in BC
In BC's coastal climate, expect 7 to 10 years from a quality exterior paint job using premium products and proper preparation. Homes near the water in Tsawwassen may be at the lower end of that range due to salt air; homes with good sun exposure and well-maintained gutters and caulking can hit the upper end.
Free exterior assessments are part of our quote process in Delta, Tsawwassen, Ladner, Port Coquitlam and Port Moody. One of the two partners walks the job with you, and the written estimate names the scope and your 1, 2 or 3-year warranty term. Call (604) 417-6483.
Free exterior assessment with every quote
We'll tell you what condition your exterior is in and what it needs before the next repaint. Serving the Lower Mainland from Delta, BC.
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