Awnings protect your windows from sun and rain — but they take a beating doing it. Toronto's freeze-thaw winters, spring pollen, summer UV, and fall leaf debris combine to turn clean awnings into mouldy, stained, faded eyesores within 2-3 years without maintenance. Here's how to keep them looking new.
By Material
Fabric awnings (canvas, acrylic, polyester):
- NEVER pressure wash — destroys waterproof coating and forces mould into weave
- Soft brush + mild soap (dish soap or specialized awning cleaner)
- Scrub WITH the weave, not against it
- Rinse with garden hose, let air-dry fully extended
- For mould: use oxygen bleach (NOT chlorine — fades colour). Soak 15-20 minutes, scrub, rinse
- Apply fabric guard/waterproofer annually after cleaning
- Lifespan: 5-10 years (acrylic like Sunbrella), 3-5 years (polyester/canvas)
Metal/aluminum awnings:
- Can pressure wash at 1,000-1,500 PSI, 25° nozzle
- Check for rust and chipped paint BEFORE washing — pressure blasts rust further
- Touch up paint chips after cleaning to prevent rust spread
- Common on older Toronto homes (1950s-1970s)
- Virtually indestructible if maintained — 30+ year lifespan
Retractable awnings:
- Extend fully, clean fabric with soft brush + soap
- Clean the mechanism housing and arms (accumulates dirt, spiders, wasps)
- Lubricate retraction mechanism annually (silicone spray)
- ALWAYS retract when dry — retracting wet = instant mould factory
- Retract during windstorms (Toronto gets 90+ km/h gusts) — wind destroys extended retractable awnings
The wet-retract mould bomb: The #1 mistake Toronto homeowners make with retractable awnings: retracting them while wet. When wet fabric is rolled up tight inside the housing, it can't dry. Within 48-72 hours, mould begins growing INSIDE the roll. You don't see it until you extend the awning weeks later — and by then, the mould has permeated the entire fabric. Prevention: always wait until fabric is fully dry before retracting. If it starts raining while extended, leave it extended until the rain stops and the fabric dries. Better a wet awning than a mouldy one.
Toronto Awning Problems
- Pollen buildup (April-June): Yellow-green pollen sits on flat awning surfaces and creates a sticky paste when combined with moisture. If left all summer, it permanently stains light-coloured fabric.
- Bird droppings: Birds perch on awning edges. Droppings are acidic (pH 3-4) and bleach fabric within days. Remove within 24-48 hours — scrape gently when dry, then spot-clean.
- Leaf staining (fall): Wet leaves sitting on fabric for more than a week create tannin stains (brown marks). Worse on white/beige awnings. Brush off leaves weekly in October-November.
- UV fading: Toronto's summer UV fades fabric awnings, especially on south-facing sides. Solution-dyed acrylic (Sunbrella) resists fading best. Polyester fades fastest. No cleaning fix — fading is permanent.
- Winter storage: Remove fabric awnings in October if possible. If fixed, brush off snow immediately (weight damages frames and stretches fabric). Never ice-scrape fabric — let it melt naturally.
The "awning + window" combo: Dirty awnings above clean windows look worse than dirty everything. When you book window cleaning, add awning cleaning — the cleaner is already there with ladders and soft-wash equipment. MANTLE cleans awnings as an add-on to any window or exterior package. Clean awnings frame your clean windows perfectly.
Replace vs clean decision: If your fabric awning has: (1) Holes, tears, or fraying edges → replace. (2) Mould that returns within weeks of cleaning → the fabric is saturated → replace. (3) Fading making it look grey → cosmetic, but cleaning won't restore colour → consider replacement. (4) Surface dirt, pollen, bird droppings → clean. Fabric awning replacement: $200-$800 per awning. Cleaning: $50-$200. If cleaning restores 80%+ appearance, it's worth it. If the awning looks tired even after cleaning, replacement gives a better ROI.
Add Awning Cleaning to Your Exterior Package
Soft brush + gentle rinse. Never pressure on fabric. Add-on to any booking.
Get Free Estimate →Or call (416) 206-3274
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