Serving the Cowichan Valley Regional District
Roofing Services in Duncan
We handle asphalt re-roofs, repairs, metal roofing and moss control across Duncan, North Cowichan and the Cowichan Valley, providing a written quote after our on-site assessment.
Cowichan Roofing handles full asphalt replacement at $8,000 to $20,000, roof repair at $500 to $3,000, metal systems at $18,000 to $45,000 with a 40 to 70 year service life, and maintenance at $300 to $1,200 a visit, alongside cedar, torch-on and commercial roofing. Because Duncan, North Cowichan, Lake Cowichan and Cowichan Bay each weather differently, we start every job with an on-site assessment on your lot.
Our roofing services
- Roof ReplacementFull asphalt re-roofs in Duncan and the Cowichan Valley — tear-off, deck inspection, new underlayment and code-rated venting. Typically $8,000–$20,000, quoted on site.
- Roof RepairRoof leak and flashing repair in Duncan and the Cowichan Valley — chimneys, skylights, valleys, storm damage and lifted shingles. Most repairs $500–$3,000.
- Metal RoofingStanding-seam and metal panel roofing in Duncan and the Cowichan Valley — 40–70 year service life, no moss mat, concealed fasteners. Typically $18,000–$45,000.
- Roof MaintenanceRoof moss treatment, gutter and valley clearing and sealant renewal in Duncan and the Cowichan Valley. Typically $300–$1,200 — the work that gets a roof to its rated life.
- Cedar RoofingCedar shake and shingle roofs, built for a 25 to 50 year life. Typically $28,000–$60,000 for a full install.
- Flat & Low-Slope RoofingTorch-on membrane roofing for additions, carports and low-slope sections. Typically $8,000–$24,000 for a full install.
How we choose the right system for your roof
Selecting the ideal roofing material depends on pitch, surrounding trees, and local climate exposure. Steep slopes shed water quickly and suit architectural asphalt shingles or metal panels. Low-slope areas need specialized membranes to prevent water from backing up under seams. Shaded properties benefit from materials that resist moss growth and retain less moisture. Homes exposed to heavy winds need high-wind rated fastening systems and sturdy starter strips. We evaluate your existing roof structure, roof pitch, and attic ventilation setup during our visit. Our team explains how different materials perform under wet, freezing, or windy conditions in the valley. We help you choose a durable roofing option that fits the design of your home and provides long-term protection against local weather.
What every job includes
We design every project to provide complete protection from the roof deck up. Our service includes full tear-off of old materials down to the structural sheathing. We check all decking boards for moisture damage or rot. Synthetic underlayment provides a tough secondary barrier over the entire roof area. Heavy-duty ice-and-water membrane seals critical areas like eaves, valleys, pipe boots, and sidewalls. We replace old metal flashings, ridge vents, and plumbing stack boots with durable new components. All job sites receive thorough ground protection before work begins. We collect and haul away all job debris for proper disposal. Finally, magnetic rollers sweep lawn areas, driveways, and flower beds to capture stray fasteners. We carry WorkSafeBC coverage and commercial general liability insurance on every job.
How the quote comes together
We construct your detailed quote after a thorough physical inspection of your roof. Our team measures total square footage, roof pitch, and valley lengths accurately. We examine flashings, chimney junctions, skylights, and attic ventilation points. We check the condition of existing plywood to estimate any required sheathing replacement. Your written quote lists every step of the job clearly. It details complete tear-off, ground protection, synthetic underlayment, and membrane placement. We specify metal flashings, roof venting, disposal fees, and final magnetic ground sweeps. The quote outlines exact material choices and installation methods tailored to your home. We pull any required permit for the work. You receive a comprehensive written document so you know precisely what to expect from start to finish.
Get a written roofing quote
Serving Duncan, North Cowichan, Lake Cowichan and Cowichan Bay across the Cowichan Valley Regional District.