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Serving Calgary & surrounding areas · Mon–Fri 8 AM–5 PM · (403) 474-9100 · service@ggcalgary.ca · GG Group

Musty Smells & Mold

Earthy odours, mildew spots and stale air downstairs. Here's what causes it and how we fix it.

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Signs to Watch For

  • Earthy odours, mildew spots and stale air downstairs.
  • Damp or stained drywall, flooring or storage boxes
  • Musty odour or noticeably higher humidity
  • Problems that worsen after rain or spring melt

What Causes It

Most basement moisture comes from groundwater and surface water building up against the foundation, humid air meeting cool concrete, or drainage that can't keep up. In Calgary, clay soils that hold water and rapid freeze-thaw cycles make these issues common.

Why Not Wait?

Moisture rarely fixes itself. Left alone, it can damage finishes, stored belongings and indoor air quality — and repairs get more costly over time.

Mildew-stained storage boxes in a damp basement

Book Your Free Inspection

Prefer to pick a time? Book online. No obligation; free written quote.

How It Works

Damp crawl space with mould on the joists and torn plastic over wet soil
Damp crawl space
  • Humid air and mould on the wood above
  • Torn plastic over wet soil
  • Moisture rises into the home
Basement dehumidifier
Basement dehumidification
  • High-capacity dehumidifier
  • Drains automatically
  • Holds humidity around 50%

Water in your basement? Let's stop it.

Book a free, no-obligation inspection and written quote. Backed by GG Group, trusted in Calgary for over 15 years. Your one-stop shop for a dry basement, from demolition and waterproofing to rebuild, refinishing, exterior grading and exterior waterproofing. Work many companies won't take on. Proudly Canadian Owned & Operated. The person who quotes your job stands behind it.

Get a Free QuoteCall (403) 474-9100