Owens Corning Duration FLEX Shingles in Calgary
Owens Corning Duration FLEX is an SBS polymer-modified architectural shingle with SureNail® Technology and a UL 2218 Class 4 impact rating — flexible in deep cold and hail-resistant, making it one of the best Owens Corning matches for Calgary’s freeze-thaw winters and storms. Iron Shield Roofing installs Owens Corning Duration FLEX shingles in Calgary and area.
What it is
Duration FLEX pairs SureNail® Technology with SBS (rubberized) modified asphalt. The SBS keeps it flexible when temperatures plunge and lets it absorb hail impact without cracking, earning a UL 2218 Class 4 rating — the highest available.
Who it’s for: Calgary homeowners who want top hail protection and cold-climate durability with industry-leading wind performance.
Key specifications
| Shingle type | Architectural — SBS polymer-modified |
|---|---|
| Impact rating | UL 2218 Class 4 (highest) |
| Wind resistance | Up to 130 mph (SureNail® Technology) |
| Core technology | SBS modified asphalt + SureNail® reinforced nailing zone |
| Warranty | Limited lifetime (single-family homes) |
| Canadian colours | Confirmed per project (see below) |
Why Owens Corning Duration FLEX shingles Works in Calgary
Duration FLEX is purpose-built for conditions like Calgary’s. The SBS-modified asphalt stays pliable through deep cold and resists cracking, the Class 4 rating is the highest UL 2218 impact category for hail (and may earn an insurance discount), and SureNail Technology backs a 130 mph wind rating against chinook gusts.
Available colours in Canada
Owens Corning offers Duration FLEX in a range of colours for the Canadian market. Colour availability shifts by region and season, so rather than list colours we can’t currently verify for Alberta, we confirm the live Canadian lineup with our suppliers for each project.
See it on your home. Explore Duration FLEX colours with Owens Corning’s roof visualizer, then contact Iron Shield Roofing and we’ll confirm the current Canadian colours we can source for your project.
Frequently Asked Questions
Why is Duration FLEX a top pick for Calgary?
Duration FLEX uses SBS (rubberized) modified asphalt that stays flexible in deep cold and absorbs hail impact for a UL 2218 Class 4 rating, plus SureNail Technology for 130 mph wind performance. That combination of cold-climate flexibility, hail resistance, and wind performance is an excellent match for Calgary.
Is Duration FLEX a Class 4 hail-resistant shingle?
Yes. Duration FLEX carries a UL 2218 Class 4 impact rating, the highest category, and may qualify for an insurance premium discount — check with your provider.
What is SureNail Technology?
SureNail® is a tough engineered fabric strip in the nailing zone that gives a clear nail line and triple-layer reinforcement where the shingle is fastened, supporting the 130 mph wind rating.
What colours does Duration FLEX come in?
Owens Corning offers Duration FLEX in several colours for the Canadian market. Iron Shield Roofing confirms the current Alberta lineup with our suppliers for each project.
Need help with your home or business roofing project?
Iron Shield Roofing installs Owens Corning Duration FLEX across Calgary and area.
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