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Your Trusted Roofing Partner in Vancouver
Westcoast Roofing Systems has been a trusted leader in residential and commercial roofing and building envelope solutions for over 40 years. Our team combines decades of hands-on experience with ongoing training to deliver compliant, code-specific installations and repairs tailored to the unique climate challenges of the Pacific Northwest. Certified by industry leaders like GAF, Siplast, and the Cedar Shake and Shingle Bureau, we prioritize meticulous documentation, collaborative client engagement, and long-term waterproofing solutions.

Our commitment to quality is reflected in our stable workforce, which has maintained an average tenure of 30 years, ensuring consistent expertise and accountability. We specialize in diagnosing complex moisture issues, designing transitional detailing, and executing leak investigations with precision, all while maintaining minimal disruption to clients' daily lives. Backed by manufacturer warranties and a 10-year work guarantee, our approach balances technical rigor with transparent communication to protect clients' most valuable assets.
Services
Sloped Roofs Flat Roofs Building Envelope Leak Investigation Transitional Detailing Moisture Control Waterproofing Systems Cedar Shake Roofs Metal Panel Systems Slate Tile Roofs
Highlights and features
  • We offer 40+ years of specialized roofing expertise in Vancouver's climate.
  • Our team holds certifications from leading manufacturers like GAF and Siplast.
  • All work complies with industry standards and manufacturer warranty requirements.
  • We provide real-time collaborative job documentation for full transparency.
  • Our stable workforce ensures consistent quality and accountability.
Associations and certifications
  • Cedar Shake and Shingle Bureau
  • Siplast
  • Elevate
  • GAF
  • Master Elite Contractor
What people say
Excellent workmanship Polite crew Prompt service Transparent communication Long-term solutions
Update Listing
Services
Sloped Roofs
We design and install water-shedding sloped roofs using cedar shakes, laminate shingles, metal panels, and slate tiles. Our systems prevent leaks by ensuring proper water flow direction while meeting aesthetic and durability requirements. Clients benefit from manufacturer-certified installations with compliance guarantees.
Flat Roofs
Our flat roof solutions include SBS membranes, EPDM/TPO single-ply systems, built-up roofs, and liquid-applied PMMA. Specialized crews address drainage challenges while maintaining waterproof integrity for industrial, commercial, and residential properties across the Lower Mainland.
Building Envelope
We restore building envelopes through rain screen wall assemblies, deck waterproofing, and custom sheet metal fabrication. Our expertise prevents moisture intrusion in walls, windows, and transitional details while maintaining compliance with Vancouver's climate-specific building standards.
Leak Investigation
Our team identifies water ingress sources in roofs, chimneys, skylights, and masonry using advanced diagnostic techniques. We provide detailed remediation plans supported by photographic evidence to resolve persistent leaks without unnecessary replacements.
Transitional Detailing
We specialize in designing and installing waterproof transitional details at roof-wall intersections, penetrations, and complex architectural features. This prevents costly water damage through precision-engineered flashing and membrane integration solutions.
Questions
What roofing systems do you specialize in?
We handle sloped roofs (cedar shakes, laminate shingles, metal, slate) and flat roofs (SBS membranes, EPDM/TPO, PMMA) with manufacturer-certified installations.
Are you certified by roofing material manufacturers?
Yes, we're certified by GAF, Cedar Shake and Shingle Bureau, Siplast, and Elevate, including GAF's Master Elite Contractor status awarded to top 2% of North American contractors.
How do you handle complex leak investigations?
We use diagnostic tools and photographic documentation to identify water ingress sources, then create targeted remediation plans without unnecessary replacements.
Do you provide building envelope services?
Yes, we specialize in rain screen wall assemblies, deck waterproofing, and sheet metal fabrication to protect against moisture intrusion in critical structural areas.
What areas do you serve?
We operate throughout Metro Vancouver, Greater Vancouver, and the Lower Mainland for residential and commercial roofing projects.
How long have you been in business?
We've provided roofing solutions since 1983, with our core workforce maintaining an average 30-year tenure for consistent quality and expertise.