WHAT AFFECTS HOW LONG YOUR ROOF LASTS IN PORTLAND?

WHAT IF #1
Roof was installed properly with good ventilation from day one. Air flows correctly. Moisture escapes. Shingles age normally.
→ Roof lasts 25–30+ years.
What If #2
Roof has poor attic ventilation and trapped moisture. Heat and moisture build up under the shingles.
→ Roof ages faster and fails early.
What If #3
Home has heavy tree coverage and constant shade. Less sunlight means more moisture and faster moss growth.
→ Lifespan is shorter without regular maintenance.
What If #4
Roof gets regular maintenance and moss treatment every few years. Small issues are handled early before they spread.
→ Adds years of life to the roof.












