Many Canadians think basement flooding and mould are spring problems — but winter has its own hidden risks. Freeze-thaw cycles, ice dams, and blocked gutters can cause unexpected water intrusion that fuels mould growth long before the snow melts.

Ignoring moisture now can lead to expensive repairs and health risks later.

Why Winter Water Damage Happens

• Freeze-thaw pressure: Repeated cycles expand cracks in your foundation, letting water seep in.
• Ice dams: Melting roof snow refreezes and backs up into walls and basements.
• Clogged gutters: Blocked drainage causes pooling near your home’s foundation.
• Frozen sump pumps: A non-functioning pump can lead to flooding even in winter.
  
  

Why Mould Won’t Wait

Mould can start growing in as little as 24–48 hours after water exposure — even in cold, damp basements. Early signs include:

• Musty smells
• Peeling paint
• Rust on surfaces
• Pooled water or damp spots
  
  

What You Can Do Now

• Remove standing water quickly
• Use fans and dehumidifiers to dry the space
• Clean with mould-safe products
• Check gutters and downspouts
• Watch for recurring leaks
  
  

Call Paul Davis Before It Spreads

If you suspect water damage or mould in your basement this winter, don’t wait for spring. Paul Davis offers expert assessments, moisture detection, and certified mould remediation — available 24/7.



Stay dry, stay safe. Call your local Paul Davis team today.