Diagnostic Guide
9 Signs You Need a New Roof — Oregon Edition.
Quick Answer
Your roof is likely near the end of its life if you can spot two or more of: curling or cupping shingles, granule loss in your gutters, exposed nail heads, persistent moss colonies, sagging rooflines, daylight visible from the attic, water stains on top-floor ceilings, bright "fresh" patches where shingles have shifted, or simply 18+ years of age on a shingle-based roof. Plan the replacement before the roof forces your hand.
What to look for from the ground
A pair of binoculars from across the street will tell you a lot. You're looking for:
1. Curling, cupping, or cracked shingles
Healthy shingles lie flat. Aging asphalt shingles curl at the corners (cupping), bend at the edges (curling), or develop visible cracks. These changes accelerate moisture intrusion and are a strong sign the shingles' weathering layer has broken down.
2. Bright "fresh" patches where shingles have shifted
If you can see lighter-colored or unweathered patches where a shingle has moved or lifted, you're seeing the underside of an adjacent shingle that's normally protected. This means the roof is no longer sealing as designed.
3. Sagging rooflines or wavy ridges
A roof should look straight and even from the street. Sagging, dipping, or waviness suggests structural issues with the decking or framing underneath — sometimes from prolonged moisture intrusion. This is serious; get it inspected.
4. Persistent moss colonies
Some moss on a PNW roof is normal — full colonies that come back every year after cleaning are a sign the shingles' protective surface is degraded and water is wicking in. Severe moss damage shortens roof life dramatically.
What to look for in your attic
Bring a flashlight and go up there. Look for:
5. Daylight through the roof deck
If you can see daylight between the sheathing boards or through nail holes when the attic light is off, you have an active failure point. Plywood decking with visible gaps means moisture is getting in.
6. Water stains, dark spots, or visible moisture on the underside of the deck
Stains on the sheathing — even from old, dried-out moisture — mean water has been getting through the roof. Active dampness is worse. Either way, the roof is failing and the decking may need replacement.
7. Stains on top-floor ceilings
Ring stains, yellowing, or peeling paint on top-floor ceilings after weather events mean water is making it through both the roof and the deck. By the time you see this inside, the failure point upstairs is significant.
What to look for in your gutters
8. Excessive granule loss
Architectural asphalt shingles shed some granules over their lifespan — a small amount in the gutters is normal. Heavy granule accumulation (you can see piles of them at downspouts) means the shingles are losing their weathering layer fast. Once the granules are gone, the asphalt underneath degrades quickly.
9. Exposed nail heads on the roof
From the ground (or with binoculars), look for nail heads sticking up through shingles that should be flat. Exposed nails mean either the shingles have shifted enough to expose the fasteners, or the original nailing pattern was wrong. Either way, water can intrude.
Age and PNW context
How old is your roof? If you don't know, real estate paperwork from when you bought the house usually lists it.
| Material | Expected PNW lifespan | Plan replacement at… |
|---|---|---|
| Shingle-based (architectural asphalt) | 20–30 years | 18+ years |
| Shingle-based (composite / synthetic) | 20–30 years | 18+ years |
| Standing-seam metal | 40+ years | 35+ years |
| Plastic-based membrane (TPO / PVC / EPDM) | 20+ years | 18+ years |
| Cedar shake | 10–20 years | 10+ years |
If your roof is past its expected lifespan and you're seeing visible wear, time to plan. If it's well within range and looks great, you have time.
If you see two or more of these, what now?
Get a free in-home consult from a CCB-licensed roofer. A good roofer will tell you straight whether you have years left or need to plan a replacement. They'll check the decking, the ventilation, the flashing, and the overall condition — and give you an honest itemized estimate if a new install makes sense.
Storm Roofing's consults are free, no commissioned sales, and no high-pressure pitch. If your roof has more life in it, we'll tell you. If it doesn't, we'll explain what the project would look like — and you can decide from there.
FAQs
Should I wait until my roof leaks to replace it?
No. By the time interior water damage is visible, you're dealing with both the roof and follow-on damage to insulation, drywall, and possibly framing. Planned replacement of an aging roof is dramatically less expensive than reactive replacement after a leak.
My roof looks fine from the ground. Do I still need to worry?
If it's under 15 years old, probably not. If it's over 20, it's worth a closer look — most damage starts small and visible only on closer inspection. A free consult is the cheapest way to know.
Is dark streaking on my shingles a sign of failure?
Dark streaking is usually algae growth (Gloeocapsa magma), which is more aesthetic than structural on most modern shingles. Algae-resistant shingles include zinc or copper granules that prevent it. It doesn't necessarily mean replacement is needed — but if your roof shows streaking and physical wear (curling, granule loss, etc.), it's time.
Can I have my roof inspected for free?
Yes. Storm Roofing offers free in-home consults across Eugene, Springfield, and the surrounding Willamette Valley. We'll tell you honestly whether your roof needs to be replaced or has years of life left.