Torch-on roofing (modified bitumen applied via propane torch) has been the dominant flat roofing system in BC’s Lower Mainland for decades. Multi-ply SBS modified bitumen provides redundant waterproofing layers critical in Surrey’s 1,200mm+ annual rainfall environment.
I-M Roofing installs 2-ply and 3-ply torch-on systems throughout Surrey. Call 236-838-9577.
Torch-On Cost Surrey BC 2026
| System | Cost |
|---|---|
| 2-Ply SBS (residential) | $6,000-$16,000 |
| 3-Ply (commercial spec) | $10,000-$25,000 |
| Per sq ft | $6-$16 |
FAQ — Torch-On Roofing Surrey BC
How much does torch-on roofing cost in Surrey BC?
$6,000-$25,000. A 2-ply system on a typical residential flat roof runs $6,000-$16,000. Call 236-838-9577.
How long does torch-on last in Surrey?
2-ply: 20-25 years. 3-ply: 25-30 years. Seam quality is the key determinant of lifespan.
SBS vs APP — which is better for Surrey BC?
SBS is the BC industry standard. It stays flexible at low temperatures, critical in Surrey’s climate. I-M Roofing specifies SBS on all Surrey torch-on projects.
Call 236-838-9577 for Free Estimate | Torch-On Service | Flat Roofing Surrey
