Torch-On Roofing
Torch-On Roofing in Nanaimo & Across Vancouver Island
Torch-on roofing — technically SBS modified bitumen membrane — is the tried-and-true flat roofing system across British Columbia. Two plies of rubberized asphalt membrane, heat-fused into a single waterproof armor, create a roof that laughs at our heaviest rains and stands up to foot traffic, making it ideal for residential flat roofs, carports, sundecks, and low-slope additions.
9+ years strong
Roofing Vancouver Island homes
Eco Roofing Ltd crews are trained and equipped for safe, professional torch application. We install full 2-ply SBS systems — base sheet plus granular cap sheet — with proper priming, staggered laps, and meticulous detailing at parapets, drains, and penetrations. Every torch-on roof we install is built to the membrane manufacturer specifications, because warranty coverage depends on it.
Serving Nanaimo, Parksville, Duncan, Ladysmith, and Qualicum Beach, we handle new torch-on installations, complete tear-offs, and expert repairs of existing modified bitumen roofs.
Recent work
Our Torch-On Roofing Projects
Real roofs, real Island homes — a look at recent torch-on roofing work by our crews.
Don't ignore these
Signs You Need Torch-On Roofing
Spot any of these? A free inspection will tell you exactly where you stand — before a small issue becomes a big bill.
Alligatoring or crazing
A cracked, alligator-skin pattern on the cap sheet means UV has destroyed the surface — replacement time.
Blisters under the membrane
Trapped moisture blisters grow and eventually rupture. Small ones can be repaired; widespread blistering needs re-roofing.
Exposed fiberglass or mat
Worn spots where granules are gone and reinforcement shows are past the point of coating — plan replacement.
Leaks at parapets or drains
The most common torch-on failure points. Often repairable if the field membrane still has life.
Why it is worth it
Why Homeowners Choose Torch-On Roofing
Proven in BC for decades
SBS modified bitumen is the dominant residential flat-roof system in coastal BC — proven through millions of square feet and decades of rain.
True 2-ply waterproofing
Base sheet + cap sheet, heat-fused into one monolithic membrane. Two independent waterproofing layers, not one.
Walkable & tough
Granular cap sheet resists foot traffic, making it ideal for decks, rooftop patios, and roofs needing regular service access.
Superior flashing details
Torch-applied membrane forms seamlessly around parapets, curbs, and drains — the details where flat roofs usually fail.
Repairable for life
Unlike some single-plies, modified bitumen patches fuse permanently. Future repairs are straightforward and reliable.
Fire-rated assemblies
Available in fire-rated configurations for buildings where code or insurance requires it.
Pick your system
Torch-On Roofing Options & Materials
We will help you pick the right system for your roof and budget during your free inspection — here is a head start.
2-ply torch-on system
Our standard: torch-applied base + granular cap. 20–25 year service life with proper maintenance.
Self-adhered (flameless)
Where open flame is not appropriate — near combustible walls or occupied spaces — self-adhered SBS delivers similar performance.
Sopraboard / recovery systems
Approved recoveries over existing sound membranes can save tear-off cost when conditions allow.
Our Torch-On Roofing Process
No mysteries, no surprises — here is exactly what happens from your first call to the final walkthrough.
- 1
Inspection & quote
We evaluate your existing flat roof, drainage, and deck condition, then quote 2-ply SBS with any needed slope correction.
- 2
Safe site setup
Fire extinguishers, shields, and protocols per manufacturer safety standards — torch work done responsibly.
- 3
Deck prep & base sheet
Tear-off (or approved recovery), deck repairs, priming, then the base sheet torched or self-adhered with staggered seams.
- 4
Cap sheet application
Granular cap sheet heat-fused over the base, with sealed laps, custom parapet flashing, and new drain details.
- 5
Detailing & inspection
Every penetration flashed, edges sealed, site cleaned, and warranty documentation provided.
Get an exact quote: every roof is different, so we provide free inspections and itemized written quotes — no obligation, no pressure. Call (250) 240-3684 or request your quote online.
Good to know
Torch-On Roofing FAQs
A quality 2-ply SBS torch-on roof lasts 20–25 years on Vancouver Island with basic maintenance (keeping drains clear, periodic inspection). Premium cap sheets and good drainage push toward the top of that range.
Yes, in trained hands. Our crews follow manufacturer torch safety protocols: fire extinguishers on the roof, heat shields at walls and penetrations, and a fire watch after completion. For sensitive locations we offer self-adhered flameless systems.
Often yes, if the existing membrane is sound, dry, and firmly attached — a recovery saves tear-off cost. If there is trapped moisture or multiple failing layers, a full tear-off is the right call. We verify with a moisture check.
It depends on tear-off, insulation, and detailing complexity. We provide free written quotes after inspecting your roof, so you know exactly what is included.
Both are excellent. Torch-on (SBS) is the proven residential standard in BC with superior puncture resistance and easier repairs; TPO shines on large commercial roofs with its reflective white surface and welded seams. We install both and recommend based on your building.
Where we work
Torch-On Roofing Across Vancouver Island
Based in Nanaimo and on the road daily. Tap your community to see local torch-on roofing details.
Free quotes · No pressure
Need Torch-On Roofing in Nanaimo?
Free inspection, honest written quote, licensed local crews. Get started today.