Full Guide: “When to Replace Roofs: 7 Signs” – Owens Corning
This guide outlines seven clear warning signs your roof may need replacing, including curling or cracked shingles, missing granules, age (especially if it’s 20+ years old), dark streaks or moss, among others. It also encourages homeowners to consider an inspection by an independent roofing contractor. (Owens Corning)


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Read the full guide by Owens Corning: “When to Replace Roofs: 7 Signs”


Summary of Key Warning Signs

SignWhat It Means
Curled or cupped shinglesShingles no longer lie flat, reducing their weather protection. (Owens Corning)
Bald spots (granule loss)Granule shedding exposes shingles to UV and accelerates wear. (Owens Corning)
Cracked shinglesPhysical damage allows water to infiltrate your roof. (Owens Corning)
Roof age—20+ yearsCommon sign of aging roof materials nearing end of lifespan. (Owens Corning)
Dark streaks (algae) or mossIndicates moisture retention and can lead to damage. (Owens Corning)
Worn appearance or neighbors replacing theirsCould signal common age-related wear in your area. (Owens Corning)

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Absolutely! Here’s a helpful, expert-backed guide that walks you through how to tell when it’s time to replace your roof:

Full Guide: “When to Replace Roofs: 7 Signs” – Owens Corning
This guide outlines seven clear warning signs your roof may need replacing, including curling or cracked shingles, missing granules, age (especially if it’s 20+ years old), dark streaks or moss, among others. It also encourages homeowners to consider an inspection by an independent roofing contractor. (Owens Corning)


Your Link to Share:

Read the full guide by Owens Corning: “When to Replace Roofs: 7 Signs”


Summary of Key Warning Signs

SignWhat It Means
Curled or cupped shinglesShingles no longer lie flat, reducing their weather protection. (Owens Corning)
Bald spots (granule loss)Granule shedding exposes shingles to UV and accelerates wear. (Owens Corning)
Cracked shinglesPhysical damage allows water to infiltrate your roof. (Owens Corning)
Roof age—20+ yearsCommon sign of aging roof materials nearing end of lifespan. (Owens Corning)
Dark streaks (algae) or mossIndicates moisture retention and can lead to damage. (Owens Corning)
Worn appearance or neighbors replacing theirsCould signal common age-related wear in your area. (Owens Corning)

Let me know if you’d like me to tailor the article style to be more formal and informative, or casual and engaging—or help with any other tweaks you might have in mind!

Our crew just wrapped up a triplex roof replacement using CertainTeed Landmark shingles in Resawn Shake. The new roof not only looks beautiful but also provides lasting protection for the property. 🔨

We also took care of a few small repairs to ensure everything is in top shape for years to come. 💪

If your home or property needs a new roof or repairs, give us a call today for your free estimate! 📞

📍 Serving Portland and surrounding areas
✅ Quality materials
✅ Professional installation

At Portland Roofing Company, we recently completed a beautiful full roof replacement using CertainTeed Landmark shingles in Silver Birch—a top-tier color choice that brings a modern, clean look to any home.

This residential roofing project highlights our commitment to quality craftsmanship, reliable service, and long-lasting roofing solutions. The Silver Birch shingles not only enhance curb appeal but also offer exceptional durability, making them an ideal fit for the Pacific Northwest climate.

Why Choose CertainTeed Landmark Shingles?

  • Dual-layer construction for added protection
  • StreakFighter® technology to resist algae growth
  • Industry-leading wind and fire resistance ratings
  • A wide range of color options, including Silver Birch, Burnt Sienna, Granite Gray, and Georgetown Gray

Your Local Roofing Experts

Whether you’re in need of a full roof replacement, minor repairs, or a professional inspection, our licensed and insured team is ready to help. We serve homeowners across Portland, Beaverton, Gresham, and the surrounding metro areas.

When you choose Portland Roofing Company, you’re choosing:

  • On-time scheduling
  • Transparent quotes
  • High-quality materials
  • Experienced local roofers

Get Your Free Roofing Estimate

Looking to upgrade your roof with CertainTeed Landmark shingles? Contact us today for a free, no-obligation estimate and discover why so many Portland homeowners trust us for their roofing needs.

📞 Call (503) 490-3994
📧 Email (INFO@PORTLANDROOFINGCO.COM)
📍 Serving Portland, OR & surrounding areas

We just wrapped up a roof makeover in Vancouver — and WOW, what a difference! 😍

We tore off 1 layer of old roofing and installed a brand new Owens Corning TruDefinition® Duration® Roof System in the stunning Slatestone Gray 🏠💨

✨ Sleek.
✨ Durable.
✨ Storm-ready.

This roof isn’t just protection — it’s curb appeal turned ALL the way up! 🎯

Thinking about upgrading your roof? Let’s make yours the next before-and-after that stops the scroll. 🛠️📸

📍 Locally owned.
💪 20+ years strong.
📞 503-490-3994
🌐 www.pdxroofing.com

#PortlandRoofingCompany #VancouverWA #RoofGlowUp #OwensCorning #SlatestoneGray #RoofGoals #CurbAppeal #LocalAndProud


While you’re out chasing sunshine, we’ve been up on the roof bringing the shade — literally.

This full tear-off just got the ultimate summer upgrade with CertainTeed Moire Black, and it’s smoother than an ice cream cone in July. 🍦🖤

No melting shingles here — just clean edges, solid protection, and a bold look that can handle every heatwave Portland throws its way.

🏖️ Full tear-off? Done.
🎯 Sharp install? You bet.
🖤 Moire Black? Cooler than the other side of the pillow.

Ready to give your home a summer style that lasts all year? Let’s talk roofs — before the next heatwave hits.

#SummerRoofGlowUp #MoireBlackCoolDown #RoofedAndReady #PortlandRoofingCompany #HeatWaveHustle

Just wrapped up this stunner in SW Portland—featuring a brand new roof in CertainTeed Landmark Cinder Black. 💪 This bold color gives the home a crisp, modern edge while offering durability that’s built for our Pacific Northwest weather.

Swipe through to see how this sleek upgrade completely elevated the curb appeal!

🏡 If your roof is starting to show its age—or you’re just ready for a new look—Portland Roofing Company is here to help. We make roofing simple, stress-free, and stunning.

📲 Get in touch for your free estimate today. Your roof could be next.

#SWPortlandRoofing #CinderBlackShingles #CertainTeedLandmark #RoofUpgrade #PortlandRoofingCompany #ModernCurbAppeal #PNWRoofs #RoofReplacementExperts #RoofWithConfidence

We had the pleasure of giving this stunning, high-peak home in SE Portland a fresh new look! 🔨🖤

Our team installed CertainTeed Landmark Moire Black shingles, perfectly complementing the rich blue of the house and making the architecture pop from every angle. This classic combo isn’t just beautiful — it’s built to last. 💪

There’s nothing like a roof that brings out the best in your home’s unique charm. Thinking of upgrading? Let’s talk!

#PortlandRoofing #RoofMakeover #CertainTeedLandmark #MoireBlack #SEPortlandHomes #HomeImprovement #RoofingExperts

Check out this stunning roof transformation featuring Desert Rose from Owens Corning TruDefinition Duration shingles — the perfect pop of color to complement this beautiful home!

🔨 For this project, we went all in to make sure everything was done right:
✅ Installed new 1/2″ and 3/4″ CDX plywood
✅ Added trim board and barge board
✅ Installed new bath and kitchen vents
✅ Added 6 soffit vents and baffles to improve ventilation

Another roof done the Portland Roofing way — with quality, care, and curb appeal! 💪🏽🔧

📸 Swipe to see the finished look!

#OregonCityRoofing #PortlandRoofingCompany #OwensCorning #DesertRose #RoofUpgrade #RoofVentilation #BeforeAndAfter #RoofingPros #LocalRoofers #PNWHomes

We just wrapped up a roof replacement for one of our returning customers. On this project, we tore off the old roofing from the shingled portion of the main house—leaving the flat roof and garage roof untouched.

To improve ventilation, we installed new 1/2″ OSB sheathing, added extra soffit vents, and set up dedicated bath and kitchen exhaust vents.

The new roof was finished with CertainTeed Landmark shingles in Moire Black, giving the home a clean, sharp look with added durability for years to come.

Thanks again to our customer for trusting us a second time—it’s always a pleasure!

We installed all new ½” CDX plywood, fresh bath & kitchen vents, 2×4 soffit vents with baffles, and brand-new barge boards—finished with a sleek Granite Gray shingle by CertainTeed.

What do you think of the new look? 👀
📞 Call today for your free estimate!