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What type of exterior paint handles New Brunswick's salt air and temperature swings?

Question

What type of exterior paint handles New Brunswick's salt air and temperature swings?

Answer from Construction Brain

Acrylic latex paint with high-quality resin is your best defense against New Brunswick's harsh coastal conditions and extreme temperature swings. Look for 100% acrylic formulations specifically rated for coastal environments — these maintain flexibility through freeze-thaw cycles while resisting salt corrosion.

Premium acrylic latex paints like Benjamin Moore Aura, Sherwin-Williams Duration, or PPG Timeless offer superior adhesion and durability in maritime climates. These paints contain advanced resins that expand and contract with your siding through temperature swings from -25°C winters to +30°C summers. The salt air along the Bay of Fundy, Saint John harbour, and Northumberland Strait coast is particularly aggressive — cheaper paints will chalk, fade, and peel within 2-3 years.

For coastal properties in Saint John, Shediac, Bathurst, or anywhere within 10km of saltwater, choose paints with built-in mildew resistance and UV blockers. The constant moisture and salt spray create ideal conditions for algae and mold growth. Many contractors in these areas recommend adding a mildewcide booster to the paint for extra protection.

Surface preparation is critical — more important than the paint itself. Power wash to remove salt buildup, scrape loose paint, sand glossy surfaces, and prime any bare wood with a high-quality oil-based or shellac primer. Skip this step and even premium paint will fail. On older homes (pre-1978), test for lead paint before disturbing — licensed abatement may be required.

Timing matters significantly in New Brunswick's short painting season. Plan exterior work between late May and early September when nighttime temperatures stay above 10°C. Coastal fog can extend drying times, so avoid painting when humidity exceeds 85% or when morning dew is heavy.

Expect to pay $4,500-$12,000 for a full exterior paint job on a typical bungalow, with coastal properties at the higher end due to extra prep work and premium materials. Quality paint costs $80-$120 per gallon but lasts 8-12 years versus 4-5 years for builder-grade paint.

Professional application is worth considering for multi-story homes or complex trim work. Licensed painters carry WorkSafeNB coverage (verify at worksafenb.ca) and understand local weather patterns that affect paint performance.

Find experienced exterior painting contractors familiar with coastal conditions in our New Brunswick Construction Network directory — they'll know which products perform best in your specific microclimate.

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