Stucco is a classic finish for homes across Calgary, and for good reason. It’s energy-efficient, stylish, and can withstand Alberta’s harsh weather. But like anything exposed to our dramatic freeze-thaw cycles, it needs some care to stay at its best.
A little preventative maintenance can help avoid costly repairs and extend the life of stucco. Below, as one of the most experienced stucco repair companies, we break down simple but effective steps Calgary homeowners can take to keep their stucco in tip-top shape season after season.
1. Inspect Your Stucco at Least Twice a Year
Alberta’s shifting seasons are beautiful, but hard on building exteriors. That’s why it’s a good idea to do a stucco check-up twice a year: once in the spring, and again before winter hits.
During your inspection, look for:
- Hairline cracks (especially near corners, doors, and windows)
- Discolouration or rust-coloured streaks
- Bulging, soft, or crumbly spots
- Any signs of impact damage (from hail, sports, or snow removal mishaps)
Why it matters: Small cracks can let moisture seep in, especially during Calgary’s freeze-thaw cycles, when water expands as it freezes and can force cracks wider.
2. Keep Gutters and Downspouts in Prime Condition
Stucco and water don’t mix well. One of the most common causes of stucco damage? Improper water drainage. If water constantly runs down your stucco due to clogged gutters or misaligned downspouts, trouble isn’t far behind.
Here’s what to do:
- Clean your gutters in spring and fall (more often if you have tall trees nearby)
- Make sure downspouts extend at least 4 feet away from your foundation
- Add splash blocks or extensions if water pools near your walls
Bonus Tip: After a storm, walk around your home and see where water flows—you might catch a problem before it becomes a leak.
3. Seal Cracks Promptly (and Properly)
Hairline cracks are common in stucco. But don’t ignore them. Calgary’s weather will turn a tiny crack into a bigger issue faster than you’d expect.
For small cracks:
- Use a flexible, paintable exterior caulk made for stucco or masonry
- Clean out the crack before applying the sealant
- Paint over the repair once it’s cured to protect it from UV damage
When to call in help: If cracks are longer than 2 feet, run in patterns, or if the wall feels soft underneath, it’s time to bring in a stucco specialist.
4. Watch for Efflorescence
Efflorescence looks like white, chalky powder on your stucco. It’s caused by water dissolving natural salts in the material and pushing them to the surface.
While not dangerous on its own, it’s a sign that moisture is getting in. Repeated occurrences might mean:
- Improper sealing of the wall
- Damaged or missing flashing
- Water pooling at the base of the home
Clean-up tip: First, use a stiff brush and dry cleaning method. If that doesn’t work, a mild vinegar solution can help — just don’t overdo it, or you might damage the surface.
5. Trim Back Landscaping
Your shrubs and trees may look pretty close to your home, but they could be doing hidden damage. When branches, vines, or bushes rub against stucco, they can wear down the surface, hold in moisture, and invite pests.
Try to maintain at least a 6–12 inch buffer between vegetation and your stucco walls. This allows for airflow and keeps bugs, rodents, and mould at bay.
Calgary tip: Fast-growing shrubs like dogwood and lilac can quickly get out of control in spring. Mark a reminder in your calendar for seasonal trimming.
6. Clean the Surface Gently (But Regularly)
Stucco doesn’t need frequent washing, but giving it a gentle clean every few years can prevent staining and buildup. Skip the pressure washer — it can blow out the finish — and use this instead:
- Garden hose with a spray nozzle
- Soft-bristle brush
- Mild detergent mixed with water
Focus on areas where dirt or algae collect, especially on the north side of your home, where shade keeps things damp.
Avoid: Bleach or harsh chemicals. These can discolour or weaken the finish.
7. Check Around Windows and Doors
These are the most common trouble spots for stucco water intrusion. Why? Because stucco needs to be sealed tightly around all openings to prevent leaks.
Look for:
- Cracked caulking or sealant
- Gaps between the stucco and trim
- Water stains below window sills
Maintenance tip: Recaulk these areas every 3–5 years, or sooner if exposed to a lot of sun or wind.
8. Book a Professional Inspection Every Few Years
Even if your stucco looks fine, hidden issues can develop behind the surface, especially in older Calgary homes or with poor installation.
A professional inspection can check for:
- Hidden moisture with thermal imaging or moisture meters
- Signs of poor drainage or flashing
- Long-term structural risks
Golden Rule: If your stucco is over 10 years old or has never been inspected, now’s the time. It’s a small investment that can save you thousands in repairs later.
9. Repaint Every 7–10 Years (or As Needed)
Modern stucco is often finished with a breathable paint or elastomeric coating. Over time, UV rays and Calgary’s fluctuating temperatures wear that down, making the surface more vulnerable.
A fresh coat of paint:
- Seals minor cracks
- Restores water resistance
- Revives curb appeal
Ask your contractor about paint made specifically for stucco — these are flexible, breathable, and long-lasting.
Why Preventive Maintenance Pays Off in Calgary
Calgary’s climate is uniquely harsh on exterior finishes — warm days, freezing nights, hailstorms, and Chinooks can all take a toll. Preventive stucco maintenance isn’t just smart — it’s essential.
By spending a few hours a year on simple upkeep, you’ll:
- Avoid unexpected repair bills
- Catch small issues before they spread
- Protect your home’s long-term value
- Keep your exterior looking sharp, no matter the season
Let Golden Trowel Stucco Be Your Stucco Partner
Whether you need a quick inspection, minor repairs, or a full stucco refresh, Golden Trowel Stucco is here to help. We’re Calgary-based, family-owned, and deeply familiar with how our city’s climate affects your home.
Ready to give your home the care it deserves? Contact us today to book a friendly, no-pressure stucco check-up. Your future self — and your wallet — will thank you.
