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Roofing systems

Cornerstone. Keystone. Capstone.

Every Limestone system is built on Owens Corning shingles, starter and ridge caps, installed by the same crews, photographed layer by layer and managed by one project lead. Keystone and Capstone go further: the complete Owens Corning Total Protection Roofing System®, from the ice and water barrier up.

Home with Owens Corning Duration shingles in Williamsburg Gray
Good

Cornerstone System

Owens Corning Duration®

Everything a great roof needs, nothing it doesn't.

Home with Owens Corning TruDefinition shingles, representative of Duration FLEX
Better · Built for hail

Keystone System

Owens Corning Duration FLEX®

The roof built for the next hailstorm.

Home with a multi-tone Owens Corning designer shingle, representative of Woodcrest
Best

Capstone System

Owens Corning Woodcrest®

The finishing piece of a home built to stand out.

Side by side

Compare the three systems.

GoodCornerstoneBetterKeystoneBestCapstone
ShingleDuration®Duration FLEX®Woodcrest®
LookDimensional architectural shingleDimensional architectural shingleDesigner wood-shake look with deeper shadow lines
Impact ratingClass 3 (UL 2218)Class 4 (UL 2218), the highest ratingClass 4 (UL 2218), the highest rating
Wind rating130 mph130 mph110 mph standard, 130 mph with enhanced nailing
AsphaltTraditionalSBS rubber-modified, stays flexible in coldTraditional, heavier designer profile
Hip & ridge capsProEdge®ProEdge® FLEXImpactRidge®, impact-resistant
Shingle warrantyLimited lifetimeLimited lifetimeLimited lifetime
Insurance discountSome carriers credit Class 3May qualify for a larger Class 4 discountMay qualify for a larger Class 4 discount
Best forMost homes; the best overall valueTop hail protection at the best value; flexible in coldStatement homes that want Class 4 protection too
Under the shingle
Ice & water barrierTarco MS300Owens Corning WeatherLock® GOwens Corning WeatherLock® G
Synthetic underlaymentPro Guard 20Owens Corning RhinoRoof® U20Owens Corning RhinoRoof® U20
Factory starter stripStarter Strip PlusStarter Strip PlusWoodStart®
VentilationNew vents matched to what you have nowVentSure® ridge vent; box vents convertedVentSure® ridge vent; box vents converted
Pipe bootsNew pipe bootsPremium aluminum pipe bootsPremium aluminum pipe boots
Complete Owens Corning Total Protection Roofing System®Owens Corning shingles, starter and ridge capsYesYes
Included in every system
Full tear-off and deck inspectionIncludedIncludedIncluded
Photos of every layerIncludedIncludedIncluded
One project lead, start to finishIncludedIncludedIncluded

Ratings and warranties come from Owens Corning product literature and can change; your contract lists the exact coverage for your system. System warranty coverage depends on the Owens Corning warranty tier and contractor certification. Insurance discounts vary by carrier; many give a larger premium reduction for Class 4 than Class 3. Product availability varies by region. Keystone and Capstone photos are representative.

Which one fits?

A quick way to choose.

Choose Cornerstone if…

  • Your roof is simply worn out
  • You want a proven Owens Corning system at the best value
  • Hail hasn't been a problem on your street

Choose Keystone if…

  • You've had hail or storm damage before
  • You want Class 4 protection without a designer price
  • You'd like to ask your insurer about a Class 4 discount

Choose Capstone if…

  • Curb appeal is a priority
  • You want the dimension of wood shake without the upkeep
  • Your home's style calls for a designer roofline
  • You want a full Class 4 roof system: Woodcrest®, WoodStart® and ImpactRidge®

Colors

Popular Duration® colors on real homes.

Tap a photo to see it larger. Duration FLEX® and Woodcrest® have their own color lines, and we bring physical samples to every inspection so you can see them against your brick, siding and trim in daylight.

Owens Corning Duration in Williamsburg GrayWilliamsburg GrayDuration®
Owens Corning Duration in PeppercornPeppercornDuration®
Owens Corning Duration in Midnight PlumMidnight PlumDuration®
Owens Corning Duration in Desert RoseDesert RoseDuration®
Owens Corning Duration Designer in Summer HarvestSummer HarvestDuration® Designer
Try every color in the roof visualizerAll three systems, every Owens Corning color, on four sample homes.

Not sure which system is right?

Your project lead walks you through all three, with samples, at your free inspection.

Book a free inspection