When getting a roofing quote in Surrey, BC, you’ll inevitably be asked which shingle brand you prefer — or the contractor will specify one themselves. GAF, IKO, and Owens Corning are the three brands I-M Roofing installs most frequently in Surrey. This guide gives you an honest comparison so you can make an informed choice rather than defaulting to whatever the roofer already has on the truck.
Free estimate with brand recommendation: I-M Roofing Ltd. — 236-838-9577
GAF vs IKO vs Owens Corning — Surrey BC Comparison 2026
| Factor | GAF Timberline HDZ | IKO Dynasty | Owens Corning Duration |
|---|---|---|---|
| Product warranty (shingle) | Limited Lifetime | Limited Lifetime | Limited Lifetime |
| Algae warranty | 25 years (StainGuard Plus) | 15 years (ArmourZone) | 25 years (StreakGuard) |
| Wind rating | 130 mph / 209 km/h | 130 mph / 209 km/h | 130 mph / 209 km/h |
| Granule technology | LayerLock (fused tabs) | ArmourZone (nailing zone) | SureNail (fabric strip) |
| Surrey moss resistance | Good (copper granules) | Good (copper granules) | Good (copper granules) |
| Price (relative) | Mid–High | Mid | Mid–High |
| Local Surrey availability | ✅ Excellent | ✅ Excellent (Canadian manufacturer) | ✅ Good |
| Our Surrey recommendation | ✅ Top pick for longevity | ✅ Best value in Surrey | ✅ Strong alternative |
Our Honest Surrey Take on Each Brand
GAF Timberline HDZ
GAF is the largest shingle manufacturer in North America and the Timberline HDZ is their flagship architectural product. The LayerLock technology (individual shingle tabs fused at the factory) gives it excellent granule adhesion — particularly relevant in Surrey where granule retention directly extends lifespan in wet conditions. Our top recommendation for Surrey homeowners who plan to stay in the home 15+ years and want maximum lifespan.
IKO Dynasty
IKO is a Canadian-owned manufacturer with a plant in BC — this gives it strong availability and competitive pricing in Surrey. The Dynasty is IKO’s premium line with a wider nailing zone that reduces installation error risk. IKO’s Canadian manufacturing and distribution network means better colour consistency and availability than brands manufactured further south. Our value recommendation for Surrey — nearly equivalent performance to GAF at a lower material cost.
Owens Corning Duration
OC’s unique SureNail strip provides a fabric reinforced nailing zone that gives installers a clear, consistent fastening target. The Duration is well-regarded and performs reliably in Surrey’s climate. Good choice when a specific colour option isn’t available in GAF or IKO, or when the homeowner has a preference for OC from a previous installation.
Related Resources
- Asphalt shingle roofing service page Surrey BC
- Asphalt shingle cost Surrey BC per sq ft
- Best roofing materials Surrey BC 2026
Brand recommendation for your home: 236-838-9577
