How Long Do Roofs Last?
Asphalt shingles: 20-30 years Architectural shingles: 25-35 years Metal roofing: 40-70 years Cedar shake: 20-40 years Flat roofs (modified bitumen): 15-25 years
Vancouver's wet climate can shorten these lifespans. Heavy rain, moss growth, and occasional wind all take their toll.
Warning Signs You Can See from the Ground
You don't need to climb on your roof to spot problems. Look for these from your yard:
Missing or Damaged Shingles
What to look for:
- Bare patches where shingles have blown off
- Shingles curling up at the edges
- Shingles that look cracked or broken
- Shingles lying in your yard
What it means:
- A few missing shingles: Repair
- Widespread damage: Replacement territory
Sagging Roof Line
What to look for:
- The ridge (peak) should be straight
- Any dip or sag in the roofline
- Uneven appearance overall
What it means: Sagging indicates structural problems — possibly water damage to the decking or rafters. This needs professional evaluation immediately.
Moss and Algae Growth
What to look for:
- Green or black streaking
- Thick moss accumulation
- Growth concentrated in certain areas
What it means: Vancouver's wet climate promotes moss. Some moss is manageable with treatment. Heavy buildup can damage shingles and indicate moisture retention.
Granule Loss (Asphalt Shingles)
What to look for:
- Excessive granules in gutters
- Shingles that look "bald" or shiny
- Visible asphalt showing through
What it means: Granules protect shingles from UV and weather. When they're gone, the shingle deteriorates rapidly. Heavy granule loss = replacement time.
Warning Signs from Inside Your Home
Attic Issues
If you can access your attic, look for:
- Daylight through the roof: Obvious problem
- Water stains on rafters: Past or current leaks
- Sagging decking: Water damage
- Mold or mildew smell: Moisture intrusion
Ceiling and Wall Signs
- Water stains on ceilings (especially after rain)
- Paint peeling near the roofline
- Damp spots in attic or top floor closets
Age-Based Assessment
Under 15 Years
- Most problems are repairable
- Isolated damage doesn't mean full replacement
- Regular maintenance extends life
15-25 Years
- Entering "watch carefully" territory
- Major repairs might not be cost-effective
- Start budgeting for replacement
Over 25 Years (Asphalt)
- Any significant problem likely means replacement
- Multiple small issues add up
- Don't invest heavily in repair
When to Repair vs Replace
Repair makes sense when:
- Damage is localized (storm damage to one area)
- Roof is under 15 years old
- Repair costs less than 30% of replacement
- Rest of roof is in good condition
Replace makes sense when:
- Damage is widespread
- Roof is over 20 years old
- Multiple problem areas
- Underlying decking is damaged
- You're getting repeat repairs
Getting a Professional Assessment
A roofing inspection typically includes:
- Visual inspection from ground and roof
- Check of flashing around vents, chimneys, skylights
- Gutter and drainage assessment
- Attic inspection (if accessible)
- Written report with photos
Cost: Many roofers offer free inspections (but get multiple opinions — some will push replacement when repair is viable).
What Replacement Involves
A full roof replacement includes:
- Removing old shingles
- Inspecting and repairing decking as needed
- Installing new underlayment
- Installing new shingles
- Replacing flashing and vents
- Cleanup and disposal
Cost in Greater Vancouver: $8,000-20,000+ depending on size, material, and complexity.
Protecting Your Roof
Trim overhanging branches: Reduces debris and moss Clean gutters regularly: Proper drainage protects the roof Remove moss: Treat annually before it builds up Address small repairs quickly: Don't let minor issues become major