What exterior paint products work best on Windsor Park's older clapboard and stucco homes?

Benjamin Moore Aura Exterior and Sherwin-Williams Duration are the two best exterior paint products for Windsor Park's older clapboard and stucco homes, based on their performance in Edmonton's extreme temperature range of minus 35 to plus 30 degrees Celsius. Both products deliver superior adhesion on aged substrates, built-in mildewcide protection, and the flexibility needed to withstand 60+ degree annual temperature swings. iPaint Painting specifies these products on every Windsor Park exterior project.

Products for Clapboard Siding

Windsor Park's pre-1930 homes commonly feature narrow clapboard siding (sometimes called lap siding or bevelled siding). After 80 to 110 years of Edmonton weather, this wood has been painted, scraped, and repainted many times. The key to a lasting finish on aged clapboard is proper primer selection followed by premium topcoats:

• Primer: Zinsser Cover Stain oil-based primer ($40 to $50 per gallon) penetrates deeply into weathered wood grain, sealing tannin bleed and providing a mechanical bond that water-based primers cannot achieve on bare, aged wood. iPaint Painting applies this by brush (not sprayer) on all bare wood areas to ensure full penetration into cracks and grain.
• Topcoat option 1 (Benjamin Moore Aura Exterior): Colour Lock technology resists fading from Edmonton's intense summer UV. Self-priming formula. Approximately $75 to $85 per gallon. Two coats provide 10 to 12 year durability on properly prepared clapboard.
• Topcoat option 2 (Sherwin-Williams Duration): PermaLast technology for excellent adhesion on challenging substrates. Factory-added mildewcide. Approximately $70 to $80 per gallon. Excellent self-levelling properties that produce a smooth finish on textured wood grain.

Products for Stucco Exteriors

Windsor Park's 1930s to 1950s homes often feature sand-finish stucco, which develops hairline cracks over time from freeze-thaw cycling. Standard exterior paint will not bridge these cracks. iPaint Painting uses elastomeric coatings that stretch up to 300 percent without cracking:

• Benjamin Moore Aura Exterior (flat or low-lustre): Applied at 16 to 20 mils wet film thickness (double the standard application rate) to create a waterproof membrane over the stucco surface. The thicker application fills hairline cracks up to 1 millimetre wide.
• Sherwin-Williams Loxon XP: Purpose-built for masonry and stucco surfaces. Alkali-resistant formula prevents the efflorescence staining common on older stucco. Approximately $65 to $75 per gallon.

Why Product Selection Matters in Edmonton

Cheaper exterior paints rated for moderate climates will fail prematurely on Windsor Park homes. Edmonton's annual temperature swing of 60+ degrees causes wood and stucco to expand and contract significantly. Rigid paint films crack, moisture enters, and the cycle of peeling and failure accelerates. The products iPaint Painting specifies are formulated with flexible resins that move with the substrate, maintaining a continuous protective barrier year-round. Every exterior project includes our 5-year written warranty.

Get expert product recommendations for your Windsor Park home. Request a free estimate from iPaint Painting or call 780-938-9555.