If you’ve patched a crack in your stucco only to see it open up again a year later, you’re not alone. Stucco on Airdrie homes goes through some of the toughest temperature swings in the country, and quick fixes rarely last.
What chinooks do to stucco
A chinook can raise the temperature dramatically in a few hours, melting snow and soaking the walls. When the cold returns, any water that has worked into small cracks freezes and expands. Repeat that cycle many times each winter and a hairline crack slowly becomes a wider one.
Newer homes add another factor: as a house settles in its first years, small cracks often appear around windows, doors and corners.
Why simple patches fail
Many patches fail for the same reasons:
- The crack wasn’t cleaned out, so the filler didn’t bond
- A rigid filler was used where the wall still moves slightly
- The repair was left unsealed and unpainted, so water got in behind it
- The wrong paint was used, trapping moisture in the wall
How we repair stucco properly
We start by inspecting the whole wall, not just the obvious crack. Then we:
- Clean out and open up cracks so the repair can bond
- Fill with a flexible, stucco-compatible product that can handle small movement
- Rebuild chipped or damaged areas and match the texture as closely as possible
- Prime where needed, then finish with a breathable exterior coating that keeps water out but lets moisture escape
The result is a wall that looks uniform again and is sealed against the next freeze.
When to call a professional
Hairline cracks are common and usually cosmetic, but it’s worth getting them checked if they are growing, if you see staining around them, or if pieces of stucco are loose or hollow-sounding. Those can be signs that water is getting behind the surface.
Get a free stucco assessment
We repair and repaint stucco across Airdrie, including cracks from settling, freeze-thaw and hail. Learn about our Airdrie painting services or call 403-891-4138.