Is It a Roof Leak
or Attic Condensation?
A wet ceiling or water stain doesn't always mean your roof is leaking. Here's how to tell the difference — and what to do about each.
Signs It's a Roof Leak vs Condensation
🌧️ Signs of a Roof Leak
❄️ Signs of Condensation
Frequently Asked Questions
How do I tell if my ceiling stain is from a roof leak or condensation?
Roof leaks appear during or right after rain and are localized. Condensation tends to appear in cold weather, is more diffuse, and is often accompanied by frost or moisture across attic surfaces. The best way to confirm is a professional attic inspection.
Can condensation damage my roof the same way a leak does?
Yes — chronic attic condensation causes mould, rot, and insulation damage over time. It also accelerates shingle deterioration from the underside. Both issues need to be addressed.
What causes attic condensation in BC homes?
Inadequate attic ventilation is the primary cause. Warm, moist air from the living space rises into the attic and condenses on cold surfaces. Bathroom fans venting into the attic (instead of outside) are a common culprit.
Can GoNano treatment help with condensation issues?
GoNano NuRoof treatment addresses shingle deterioration from the outside — it won't fix a ventilation problem. We'll assess both during a free inspection and give you an honest recommendation.
Not sure which one you have?
We'll come out and assess your roof and attic — and tell you exactly what's going on. Free, no obligation.
Book Free Inspection