Owens Corning residential shingle lines — TruDefinition Duration (flagship), Duration STORM (Class 4), Berkshire (designer)

Owens Corning's line follows the standard three tiers. The flagship is TruDefinition Duration — OC's most-installed architectural shingle and the parallel to GAF Timberline HDZ; its signature feature is SureNail Technology, a woven fabric strip along the nailing zone that creates a wider, install-forgiving target and improves wind holding power. Standard Duration is 130 mph wind and limited-lifetime material, and is NOT impact-rated. For hail, the impact-rated SKU is TruDefinition Duration STORM — it builds on the SureNail platform and adds WeatherGuard Technology, a polymeric backing that gives the shingle the flexibility to absorb a UL 2218 Class 4 strike; Class 4 is the rating that may qualify a Texas home for an insurance impact discount (confirm with your agent; cross-reference D1-002). The designer tier is Berkshire, a slate-look luxury shingle (the OC designer collection also includes a wood-shake-look Woodmoor variant, though Texas availability varies). The enhanced manufacturer warranty runs through the Owens Corning Platinum Preferred contractor program (the top tier is invitation-only; cross-reference D7-007, D9-004). What to ask on an OC quote: standard Duration or Duration STORM — only STORM is Class 4 impact-rated — the wind rating and high-wind install, and the contractor's Platinum Preferred status if the enhanced warranty matters. Cross-reference D1-009 for the general comparison framework. [Source: Owens Corning TruDefinition Duration product literature; Owens Corning Duration STORM product literature; Owens Corning Berkshire product literature; Owens Corning Platinum Preferred program literature; UL 2218 impact-resistance standard]