Late Summer Deck Care in Winnipeg: What to Do in August for a Strong Finish to 2025
August in Winnipeg is a bittersweet time — we’re still enjoying long, sunny evenings, but cooler nights and shorter days are a clear sign that fall is on the way. If you want to keep your deck looking great and performing well, August is the time to act.
From minor repairs to resealing, now’s your chance to prep your deck for the colder months ahead — without sacrificing any enjoyment during the last stretch of summer. Here’s what Winnipeg homeowners should be doing in August to finish 2025 strong.
1. Give Your Deck a Mid-Season Cleaning
Even if you cleaned your deck earlier in the summer, August is a great time for a second wash to remove built-up dirt, pollen, and grime.
Why It Matters:
- Prevents mildew and staining from end-of-summer humidity.
- Prepares your deck surface for any sealing or repairs.
- Helps you spot damage or wear that may have gone unnoticed.
How to Clean It:
- Sweep thoroughly and clear out debris between boards.
- Use a deck-safe cleaner (avoid harsh bleach).
- Rinse with a garden hose or use a pressure washer on a low setting.
Pro Tip: A soft scrub brush can help remove stubborn barbecue grease or sunscreen residue in high-traffic areas.
2. Inspect for Summer Damage
After months of BBQs, backyard parties, and UV exposure, your deck may be showing signs of wear. August is the perfect time to inspect for minor damage before it becomes a big issue.
What to Look For:
- Warped or cracked boards
- Loose fasteners or nails
- Fading or peeling stain/sealer
- Soft spots or water damage near stairs or posts
Trend Tip: Many Winnipeg homeowners are upgrading to hidden fastener systems or replacing surface nails with rust-resistant screws for a cleaner, safer finish.
3. Test If Your Deck Needs Resealing
Not sure if your deck needs to be resealed? The “water drop test” is a simple way to find out.
How It Works:
- Sprinkle a few drops of water on the deck surface.
- If it absorbs into the wood in under 10 seconds, it’s time to reseal.
Why This Matters in August:
- Staining or sealing needs a dry 24–48 hour window — and Winnipeg weather is ideal this time of year.
- Sealing in late summer protects your deck from fall rain, leaves, and winter moisture.
Pro Tip: Use a clear sealer if you want to keep your current deck tone, or a semi-transparent stain if you’re looking to refresh the colour and enhance UV protection.
4. Trim Surrounding Trees and Plants
Overhanging branches and nearby plants may look nice, but they can cause problems if left unchecked heading into fall.
Why You Should Prune in August:
- Reduces leaf buildup and moisture on your deck surface.
- Helps improve airflow to dry out your deck faster after rain.
- Prevents pests like ants or wasps from nesting near your structure.
Pro Tip: Cut back shrubs or plants that are within 12–18 inches of the deck perimeter to allow for proper ventilation and drainage.
5. Touch Up Stain or Paint Before It’s Too Late
If your deck stain is wearing unevenly or starting to peel in certain spots, now’s the time to fix it before cooler weather makes the job harder.
Tips for Late Summer Touch-Ups:
- Lightly sand faded areas for better adhesion.
- Use the same product you originally used for consistent tone.
- Choose early mornings or late afternoons to avoid applying stain in direct sun.
Trend Tip: Two-tone designs are on the rise — consider refreshing your railings or trim in a darker shade to modernize your space without a full restain.
6. Prep for Fall Without Losing Summer Enjoyment
Deck prep doesn’t mean shutting down your outdoor space early. Small updates now can actually help extend your enjoyment into August and beyond.
Ways to Extend Your Deck Season:
- Add cozy lighting or lanterns as evenings get darker.
- Layer in warm-weather accessories like throws and outdoor rugs.
- Consider a propane heater or fire table to make the space usable into October.
Pro Tip: Adding a pergola with retractable canopy or shade sail can offer shelter during light fall rain and double as UV protection next year.
Get Your Deck Fall-Ready, the Winnipeg Way
Late summer is your window of opportunity to protect, refresh, and prepare your deck before Winnipeg’s weather takes a turn. With a little effort in August, your deck can continue to shine well into fall — and be in great shape for next spring.
