Most composition (asphalt shingle) roofs last 20–30 years. In the Willamette Valley, the wet, shaded climate can shorten that if moss and moisture aren't managed. Cedar shake and metal can last longer with proper care.
Moss is the number-one culprit here. It holds moisture against shingles and lifts them over time. Poor attic ventilation, aging underlayment, and clogged gutters also accelerate wear.
Keep moss treated (we recommend recurring zinc-sulfate treatment), clean your gutters, ensure good ventilation, and get periodic inspections. A small repair today prevents a full replacement tomorrow.
If your roof is 20+ years old, has curling or missing shingles, granules in the gutters, or interior leaks, it's time for a professional inspection. Cascade Roofing offers free estimates across Salem and Keizer.
Get a free, no-pressure estimate from Salem's roofing team of 70+ years. We'll inspect, explain your options, and give you a clear written quote.
