Vancouver Island Roofing Done Right.
Serving residential and commercial property owners from Victoria and the Westshore through the Cowichan Valley and Nanaimo. Built to withstand our heavy coastal rain and winter winds.
Comprehensive Vancouver Island Roofing Services
From emergency leak repairs to complete strata commercial flat roof replacements, every job is backed by proper technical installation and local weather knowledge.
Residential
Residential Roofing
Complete reroofing, tear-offs, decking inspection, and algae-resistant laminate shingles designed for coastal dampness and heavy tree cover.
Commercial & Strata
Commercial & Strata Roofing
Expertise in apartment complexes, townhouse stratas, shopping plazas, and industrial buildings. Preventative maintenance and drone roof reports.
Diagnostic Repair
Fast Roof Repairs & Leaks
Accurate leak detection where water travels under paper or through hidden nail holes, rusted staples, failed skylight curbs, and dead valleys.
Membranes
Flat Roofing (Torch-On & Tar)
Specialists in SBS 2-ply torch-on membranes, true hot-tar patching on tar & gravel roofs, and single-ply EPDM/TPO membrane installations.
Sheet Metal
Metal Roofing & Cladding
Long-lasting standing seam metal systems built for coastal environments. Pinpoint diagnosis of coastal marine rust and ocean air pinholes.
Masonry
Chimney & Masonry Repair
Brick repointing every 20-25 years, concrete chimney caps, and proper cement-embedded step flashing rather than temporary surface caulking.
Choosing the Right Roofing System for Island Conditions
Different architectural styles and roof pitches require specific engineering. Here is our straightforward guide to the roofing systems we install.
Laminate Asphalt Shingles
Heavyweight fiberglass architectural shingles (such as Malarkey Highlander and IKO). Designed with algae resistance (A.R.) to counter Island moss growth.
- • Best For: Pitched residential roofs
- • Advantages: Proven durability, cost-effective
- • Lifespan: 25 to 30+ years
Standing Seam Metal
Premium heavy-gauge metal panels with concealed fasteners. Superior resistance to high coastal wind storms and heavy shedding of pine needles and snow.
- • Best For: Modern West Coast architecture
- • Advantages: Non-combustible, zero moss retention
- • Lifespan: 50+ years
Torch-On SBS 2-Ply
Heat-welded modified bitumen membrane system consisting of base sheet and granulated cap sheet. Extremely puncture-resistant and water-tight.
- • Best For: Low-slope & flat roofs, commercial entryways
- • Advantages: Seamless water barrier, durable
- • Lifespan: 20 to 25+ years
Tar & Gravel Repairs
Many older Victoria apartment buildings and commercial properties have built-up tar & gravel roofs. We provide proper hot-tar patching (not incompatible torch-on).
- • Best For: Existing multi-family & commercial flat roofs
- • Advantages: Extends life of existing roof without early teardown
- • Method: Professional hot asphalt patching
EPDM & TPO Single-Ply
High-performance synthetic rubber (EPDM) and thermoplastic (TPO) single-ply membranes offering excellent UV reflection and chemical resistance for commercial roofs.
- • Best For: Commercial buildings, flat additions, dead valleys
- • Advantages: Lightweight, energy efficient, flexible
- • Lifespan: 20 to 30 years
Shake Conversions & Sheeting
Converting 1980s/90s rotting cedar shake roofs into modern, fire-resistant laminate or metal roofing. Includes plywood resheeting and attic venting upgrades.
- • Best For: Older Cowichan & Victoria homes with shakes
- • Advantages: Lower insurance premiums, no rot
- • Scope: Full strip, resheeting & reroof
Deep Roots on Southern Vancouver Island Since 1945
The McCallum family has been roofing and installing sheet metal across North America for seven generations, and specifically on Southern Vancouver Island since 1945. In the late 1970s, McCallum Road in Langford, BC was built by the McCallum family—the present location of Millstream Village, Home Depot, and Costco.
Our philosophy has always been straightforward: honest assessments. If a roof only needs a skilled repair, we tell you clearly. If an aged shingle or deteriorated flat roof has reached the end of its serviceable life and repairs would simply waste homeowner funds, we explain the reasons plainly and provide durable replacement options.
Recent Projects Across Vancouver Island
Sidney Strip Mall & Plaza
Tar & gravel maintenance + new torch-on entrance roof
Royal Oak Estates • Saanich
Concrete tile repair & built-in gutter overflow systems
Landmark Building • Douglas St
Commercial flat roof multi-point leak repairs
3700 Carey Rd • Saanich
Double drain parkade membrane & building flashings
Esquimalt Condo Buildings
Tar & gravel flat roof repair & maintenance
Colwood Commercial Building
Marine environment metal panel pinhole remediation
Why Vancouver Island Property Owners Choose P.W. McCallum
We combine deep multi-generational trade knowledge with honest, straightforward customer service.
Vancouver Island Weather Mastery
We understand coastal atmospheric conditions—from persistent winter drizzle and wind-driven rain to moss proliferation under dense cedar and Douglas fir canopies.
Proper Masonry & Flashing
Unlike contractors who merely squeeze caulking onto deteriorating brickwork, we embed step flashings into fresh cement mortar designed to last 20 to 25 years.
Honest Repair vs. Replace
We tell you the truth about your roof. If a targeted repair will resolve the leak reliably, we perform it. If the shingles or membrane are exhausted, we advise replacement.
Drone Aerial Roof Reports
We utilize drone photography to inspect steep pitches and complex commercial strata roofs, providing crystal-clear visual proof of roof conditions to councils and owners.
Strata & Commercial Capable
Decades of experience working directly with strata councils, property managers, and commercial building owners across Greater Victoria and Cowichan Valley.
Fast Response Times
With dedicated crews stationed in both Victoria and Duncan, we provide prompt attention to active leaks, emergency storm damage, and time-sensitive inspections.
Does Your Roof Need Attention?
Spotting warning signs early prevents thousands of dollars in water damage to drywall, insulation, and roof sheeting.
Rubber stripping deteriorates over 15-20 years. Water seeps into wooden curbs unnoticed, resulting in rot and attic mold growth.
Cracking mortar joints or caulked flashing allow rainwater to seep down interior chimney walls, masquerading as a roof leak.
Moss roots into asphalt granules, lifting shingle edges and causing water to back up under the tar paper during winter downpours.
Heavy Island rain can overwhelm fine mesh guards, forcing water backward under lower shingle courses and soaking OSB plywood edges.
1990s second-growth cedar shakes have loose grain that rots quickly in BC humidity, leaving gaps at the ridge caps and valleys.
Standing water on tar & gravel or torch-on membranes breaks down seams. Tarps cannot resist pooling water and will fail.
Misdriven nails or rusted staples slowly soak moisture into roof sheeting over months, showing up only in late rainy season.
Shingles not cut properly around roof vents trap runoff water behind the flange, leading directly to attic moisture and wood rot.
Trusted by Homeowners & Commercial Properties Across Vancouver Island
From pinpoint leak diagnostics to multi-unit strata restorations, here is what Island property owners have to say about working with P.W. McCallum Roofing.
Roofing Across Southern & Central Vancouver Island
With established dispatch locations in Victoria and Duncan, our roofing crews provide rapid response and dependable project scheduling across all Southern and Central Island communities.
Need Experienced Roofing Advice or a Detailed Estimate?
Whether you are dealing with an active winter storm leak, planning a strata commercial membrane upgrade, or re-roofing a coastal home, our team provides honest assessments and proven craftsmanship.