Asphalt shingle roofing
The most common roof covering on homes in this area — an asphalt shingle roof, installed over proper underlayment and flashing.

Why shingles are the default here
Asphalt shingles suit the pitched roofs on most houses around Georgian Bay: they shed water and snow, they can be worked around dormers, valleys and skylights, and individual areas can be repaired without touching the rest of the roof.
The parts that decide how long it lasts
- Underlayment and ice-and-water protection at the eaves and in valleys
- Flashing where the roof meets walls, chimneys and vents
- Correctly cut and nailed valleys, where most of the water runs
- Intake and exhaust ventilation, so the deck stays dry underneath
- Eavestroughs that actually carry the water away from the wall
Repair or replace
Damage in one area — wind-lifted shingles, a failed flashing, a leak around a vent — is usually a repair. When shingles are curling, cracking or shedding granules across whole slopes, the covering is worn out and re-roofing is the honest answer.
What to send us
Tell us roughly how old the roof is, what you are seeing, and your address. Photos of the roof and of any staining inside help a lot.
Related roofing services
Work that often goes with asphalt shingles.

Re-roofing
Replacing a roof that has reached the end of its life — the old covering comes off, the deck is checked, and a new roof system goes on.
Re-roofing details
Roof ventilation
A roof needs to breathe. Air comes in low at the soffit and leaves high at the ridge — when that stops working, the damage happens out of sight.
Roof ventilation details
Eavestroughs
Eavestroughs catch everything the roof sheds and carry it away from the walls and the foundation. When they fail, the damage rarely stays on the roof.
Eavestroughing detailsThinking about asphalt shingles?
Send us the details and Georgian Bay Roofing will follow up with next steps.
Tell us what you need help with
Share a few details about your roof and the best way to reach you. We'll follow up to confirm what we can do.