Cedar shake roofing gives Surrey BC homes a natural, distinctive look while delivering solid performance in the Pacific Northwest’s wet climate. But cedar requires more maintenance than asphalt and carries specific installation and warranty requirements under BC Building Code. This guide covers everything Surrey BC homeowners need to know about cedar shake roofing before making a decision.

Cedar Shake vs Cedar Shingle: What’s the Difference?

How Cedar Shake Performs in Surrey BC’s Climate

Cedar shake was the dominant roofing material in BC for over a century and is naturally suited to wet climates. Western red cedar contains natural oils (thujaplicin) that resist rot and insect damage. However, Surrey BC’s prolonged wet seasons create specific risks that require proactive management:

• Moss and algae growth: The most significant challenge. Cedar’s porous surface and wood grain trap moisture and organic matter. Moss can establish within 3-5 years on untreated cedar and causes accelerated splitting and decay if left unchecked. See our moss removal guide.
• Splitting from thermal cycling: Cedar expands and contracts with temperature changes. Annual treatment with cedar preservative oil reduces splitting significantly.
• Proper attic ventilation: Cedar performs best with adequate airflow underneath. Poor ventilation causes the wood to remain wet, dramatically shortening lifespan. See our attic ventilation guide.

Cedar Shake Maintenance Schedule for Surrey BC

• Annual (fall): Clean gutters, remove moss and debris, check for split or missing shakes
• Every 3 years: Apply cedar preservative and wood brightener to restore natural oils
• Every 5-7 years: Professional inspection and treatment; replace any split or curled shakes
• At 15 years: Full professional assessment to evaluate remaining service life and replacement timeline

Cedar Shake Replacement Cost Surrey BC 2026

• Full cedar shake replacement (1,500 sq ft bungalow): $16,000 to $28,000
• Full cedar shake replacement (2,500 sq ft two-storey): $24,000 to $42,000
• Cedar to asphalt conversion (same footprint): Saves $5,000-$12,000 vs cedar-to-cedar
• Spot shake replacement (per square): $800 to $1,800

For material cost comparison, see our full Surrey BC roof replacement cost guide.

Should You Replace Cedar with Cedar or Switch to Asphalt?

Most Surrey BC homeowners replacing cedar shake after 25+ years choose to switch to architectural asphalt shingles. The reasons: lower material and labour cost, minimal maintenance, 30-50 year product warranties, and IKO/GAF products available in cedar-look profiles that preserve the home’s aesthetic. If preserving heritage character is the priority, cedar-to-cedar is the right choice — but budget for ongoing maintenance.

How I-M Roofing Handles Cedar Shake in Surrey BC

Our licensed Surrey BC roofers have installed and replaced cedar shake roofing on Surrey BC homes since 2012. We assess cedar condition honestly — recommending treatment when the wood is in good condition and replacement when deterioration is beyond the maintenance threshold. Every cedar project includes a drainage and ventilation check. Call 236-838-9577 or book your free inspection.

Frequently Asked Questions

How long does cedar shake roofing last in Surrey BC?

With proper maintenance, hand-split cedar shake lasts 20 to 30 years in Surrey BC. Without regular moss treatment and preservative application, lifespan drops to 12 to 18 years. Surrey BC’s high rainfall and mild winters accelerate moss growth, which is the primary cause of early cedar failure in the Lower Mainland.

Is cedar shake roofing still allowed in Surrey BC?

Yes. Cedar shake is permitted under BC Building Code for residential roofing with a minimum 4:12 pitch. There are no fire-code restrictions on cedar shake in Surrey’s residential zones, though fire-treated cedar (CCA or borate-treated) is available for higher fire-rating requirements. I-M Roofing installs both standard and fire-treated cedar. Call 236-838-9577.

Can I put asphalt shingles over cedar shake in Surrey BC?

No. BC Building Code does not permit asphalt shingles to be installed over existing cedar shake. The cedar must be fully removed, the decking inspected and repaired as needed, and new underlayment installed before asphalt shingles can be applied. I-M Roofing handles full cedar removal and disposal as part of every conversion project.