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

Sagging or Bouncy Floors

Soft, sloping or bouncy floors above a crawl space. Here's what causes it and how we fix it.

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Signs to Watch For

  • Soft, sloping or bouncy floors above a crawl space.
  • 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.

Level and marble showing a sagging floor

Book Your Free Inspection

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

How It Works

Sagging floor beam over a basement with weakened supports
Sagging floor
  • Beam sags between supports
  • Weakened or undersized posts
  • Floors above feel bouncy or uneven
Adjustable steel floor supports under a level beam
Floor stabilization
  • Adjustable steel supports
  • Solid footings under each post
  • Beam brought back to level

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