The Best Time of Year to Get Your Windows Cleaned in the GTA

Quick answer: Late spring (May–June) and early fall (September–October) are the best times to get your windows cleaned in the GTA. Spring clears away winter grime, and fall preps your home before the grey season sets in. Cleaning twice a year on that schedule gives most homes the best results for the money.

GTA weather is hard on windows. Between road salt spray in winter, pollen in spring, and summer humidity, glass collects a surprising amount of buildup over a few months. Knowing when to clean makes a real difference in how long the results last.

Why Timing Actually Matters

Window cleaning is not just about appearances. The timing of your clean affects how quickly dirt comes back and whether the results hold up.

• Cleaning too early in spring (before the last cold snap) means a late frost or sleet can coat fresh glass immediately
• Cleaning in the peak of summer heat can cause cleaning solution to dry too fast, leaving streaks
• Waiting until late fall means you spend most of the year looking through grimy glass
• Cleaning right before a heavy pollen week in May just means you clean twice

A little planning goes a long way.

The Two Best Windows (No Pun Intended)

Late Spring: May to Mid-June

This is the single most popular time for window cleaning across Toronto, Mississauga, Oakville, and Burlington. Here is why it works so well:

• Winter salt, mud splash, and road film have fully settled by May
• Temperatures are mild, which is ideal for water-fed pole systems and purified de-ionized water (the method that leaves glass spot-free with no squeegee marks)
• Pollen season is winding down by mid-June, so results stay cleaner longer
• You get to enjoy clear glass through the best months of the year

If you only clean once a year, late spring is your best bet.

Early Fall: September to Mid-October

Fall is the second-best window for a clean, and many homeowners in Vaughan, Markham, and Etobicoke book this slot specifically to prep for winter.

• Summer humidity and hard water spots have built up by September and are worth clearing
• Temperatures are still warm enough for efficient cleaning
• You avoid the leaf tannin stains that can streak glass if cleaning is left until November
• Clean windows let in more of the lower autumn light, which makes a noticeable difference inside

What About Summer and Winter Cleans?

Is summer window cleaning a bad idea?

Not at all. Summer cleans work fine, especially early morning when temps are cooler. The main downside is that peak summer bookings fill up fast, so scheduling further ahead is usually necessary.

Can windows be cleaned in winter?

Mild winter days above freezing are workable, and some commercial clients in the GTA do schedule winter cleans. For most residential homes, though, it is easier to wait for spring. Water-fed pole systems using purified de-ionized water perform best when there is no freeze risk.

How Often Should You Clean?

Most homes benefit from cleaning twice a year, once in late spring and once in early fall. A few situations call for more frequent service:

• Homes near busy roads (road grime builds fast)
• Properties with large trees close to the glass
• Homes with hard water from sprinkler systems hitting the windows
• Commercial storefronts where curb appeal is a constant priority

Looking for a Window Cleaning Quote in the GTA?

Blondie's Window Services serves homeowners and businesses across Southern Ontario, from Toronto and Etobicoke to Oakville, Burlington, and beyond. Spring and fall slots fill up quickly, so it is worth booking ahead. Reach out to Blondie's Window Services to get a quote and lock in your preferred date!