Owens Corning roofing. Start with the system.

Choose a specific Duration shingle

Owens Corning's Duration family uses SureNail technology, but its products are not interchangeable. The current collection guide identifies Class 3 impact options in the Duration Series and Class 4 options in Duration FLEX and Duration STORM. FLEX uses SBS polymer-modified asphalt; STORM uses a reinforcing polymeric backing. Confirm the exact model offered in your ZIP code.

A Seattle homeowner can use these distinctions to request two clear proposals: one for the selected architectural shingle and another for an impact-rated upgrade. Keep the rest of the work consistent. That lets you evaluate what the upgrade changes rather than comparing two totals built from different assumptions.

The installation affects the system rating

Owens Corning's FLEX and STORM instructions require removal of the existing roofing before installation. They also specify ImpactRidge hip and ridge shingles for a complete Class 4 roof system under the referenced impact standards. A Class 4 field shingle alone does not establish that every component of the proposed assembly meets the same classification.

Ask the contractor to walk through the roof by area. How will valleys drain? Which flashing will be replaced? What will happen at skylights, walls, and chimneys? How will intake and exhaust ventilation work together? Request photographs of the roof condition and a written process for approving unexpected work once the old covering is removed.

Read the warranty as a separate decision

Owens Corning distinguishes standard material-defect coverage from enhanced warranties available through eligible Preferred and Platinum contractors. Manufacturer-backed workmanship coverage is not part of every package. Current wind and algae coverage also depends on specified installation details and qualifying accessories. Ask for the warranty document that will apply on your installation date.

Have the installer list the warranty name and all necessary system products on the agreement. Ask who submits registration, when confirmation should arrive, and whom to contact if a concern appears. A contractor's own workmanship promise is worth documenting separately, including its exclusions and what happens if the business changes hands.

• Verify the installer's current program status directly.
• Distinguish product defects from installation errors.
• Confirm transfer rules if you may sell the home.

Evaluate color, availability, and value locally

Color selection should happen with actual samples rather than a screen alone. Look at them near your siding and trim, and ask to see a nearby completed roof with the same product if available. Confirm local stock and any substitution process before the project is scheduled.

An installed price needs a measured roof and defined scope. Ask for tear-off, disposal, decking allowances, ventilation, flashing, and warranty upgrades to be identified. On a shaded Seattle property, also discuss safe maintenance access and how leaves and branches will be managed. A product comparison becomes much more useful when it reflects the way your specific home will be reroofed.