Roof Replacement in Vancouver: Costs, Materials & What to Expect

What Does Roof Replacement Include?

A complete roof replacement in Vancouver involves more than just installing new shingles. Quality contractors follow a comprehensive process designed to protect your home against our heavy rainfall and ensure decades of performance. Vancouver's extreme moisture—approximately 1,189mm annually—means proper waterproofing layers and ventilation are critical, not optional extras.

The Roof Replacement Process

1. Complete Tear-Off

All existing roofing materials are removed down to the roof deck (plywood sheathing). This allows inspection of the underlying structure for rot, water damage, or structural issues. In Vancouver, where moisture intrusion is common, this step often reveals previously hidden problems. Most municipalities don't allow roofing over existing shingles for full replacements.

2. Deck Inspection & Repair

With old materials removed, contractors inspect the roof deck for damage. Soft spots, rot, or warped plywood are replaced—essential in Vancouver's wet climate where water can infiltrate over time. Damaged plywood replacement typically costs $75-$150 per sheet if needed, and most roofs need at least some deck repair.

3. Ice & Water Shield

A self-adhering waterproof membrane is applied at vulnerable areas: eaves, valleys, around skylights, and along wall interfaces. This critical layer prevents ice dam damage (rare in Vancouver but possible at higher elevations) and provides backup protection against wind-driven rain—our primary concern.

4. Underlayment Installation

Synthetic underlayment covers the entire roof deck, providing a secondary waterproof barrier. Modern synthetic underlayments outperform traditional felt paper, especially for Vancouver's sustained rainfall. Quality underlayment is critical—it's your last line of defense if shingles are damaged.

5. Flashing Installation

Metal flashing is installed at all roof penetrations (vents, chimneys, skylights) and transitions (valleys, dormers, wall intersections). Proper flashing installation is where Vancouver roofing jobs often fail—it requires expertise to handle our heavy rainfall. Cheap flashing or poor installation leads to leaks within years.

6. Shingle/Material Installation

New roofing materials are installed according to manufacturer specifications and BC Building Code requirements. For shingles, this includes proper nailing patterns, exposure rates, and starter strips. Ridge vents or alternative ventilation are installed to prevent moisture buildup in attic spaces.

7. Cleanup & Final Inspection

All debris is removed and the property cleaned. Magnetic sweepers collect dropped nails. A final inspection ensures work meets standards before final payment. Reputable contractors provide photos of completed work and walk you through the finished roof.

Roofing Materials for Vancouver

Choosing the right roofing material for Vancouver's wet climate significantly impacts both cost and longevity. Here's how common materials perform in our conditions:

🏠 Architectural Shingles

The most popular choice for Vancouver homes. Architectural (dimensional) shingles offer better wind resistance and longer lifespan than basic 3-tab shingles. Look for algae-resistant versions—our humid climate promotes algae growth that can stain and degrade untreated shingles.

• Cost: $10,000-$18,000 for average home
• Lifespan: 25-30 years (20-25 in Vancouver's climate)
• Best brands: GAF Timberline HDZ, CertainTeed Landmark, Owens Corning Duration

🔩 Metal Roofing

Growing in popularity for Vancouver's climate due to superior rain shedding and longevity. Standing seam metal offers the best performance—interlocking panels create a virtually waterproof surface. Higher upfront cost is offset by 40-70 year lifespan.

• Cost: $15,000-$40,000+ for average home
• Lifespan: 40-70 years
• Best for: Heavy rainfall areas, modern aesthetics, long-term value

Read our full metal roofing guide →

🔲 Torch-On Membrane

The standard choice for flat or low-slope roofs, which are common in Vancouver. Modified bitumen membrane is torched onto the roof deck, creating a seamless waterproof surface. Requires specialized installation skills.

• Cost: $8,000-$15,000 for typical flat roof
• Lifespan: 15-25 years
• Best for: Flat roofs, low-slope applications, roof decks

🌲 Cedar Shakes

Traditional West Coast aesthetic but requires significant maintenance in Vancouver's wet climate. Prone to moss growth, rot, and fire risk without regular treatment. Consider only if committed to ongoing maintenance every 3-5 years.

• Cost: $25,000-$45,000 for average home
• Lifespan: 20-40 years (with diligent maintenance)
• Caution: High maintenance in wet climates; fire concerns in interface areas

Roof Replacement Timeline

Here's what to expect during the roof replacement process:

• Quote & planning: 1-2 weeks (includes measurements, material selection, permit application)
• Permit approval: 1-3 weeks (City of Vancouver building permit)
• Material delivery: 3-7 days lead time for most materials
• Installation: 2-5 days for shingles; 5-10 days for metal roofing
• Final inspection: Same day or next day after completion

Weather factor: Vancouver's weather can extend timelines. Reputable contractors won't start work if significant rain is forecast, and partially completed roofs are tarped overnight. Plan for potential weather delays, especially outside the May-September dry season.

What to Look for in a Vancouver Roofing Contractor

• Local experience: Years working specifically in Vancouver's wet climate
• Proper insurance: Liability coverage ($2M+) and WorkSafeBC compliance
• Manufacturer certifications: GAF Master Elite, CertainTeed SELECT ShingleMaster
• Written warranty: Both material warranty (25-50 years) and workmanship warranty (10+ years)
• Permit handling: Will obtain City of Vancouver building permit
• Detailed quotes: Itemized pricing for materials, labour, deck repair, disposal
• Reviews: Strong Google, BBB, and HomeStars ratings

For related services, see our guides on roof repair for minor issues and metal roofing for premium installations.