How to Clean Windows in Winter

Cleaning windows in winter presents unique challenges — freezing temperatures, frost, and short daylight hours. But winter window cleaning is possible and sometimes necessary. Here's how to do it safely and effectively.

Challenges of Winter Window Cleaning

• Cleaning solution freezes on the glass before you can wipe it off
• Water-based solutions freeze in spray bottles and buckets
• Frost on exterior glass must be removed before cleaning
• Short daylight hours limit working time
• Cold temperatures make working outdoors uncomfortable

When Is It Too Cold to Clean Windows?

Standard water-based cleaning solutions freeze at 32 degrees F (0 degrees C). The practical minimum for exterior window cleaning is about 40 degrees F (4 degrees C). Below this, the solution freezes on the glass before you can wipe it off.

Winter-Safe Cleaning Solutions

• Rubbing alcohol solution: Mix 2 cups rubbing alcohol (70% isopropyl) with 1 cup water and 1 tablespoon dish soap. Alcohol lowers the freezing point and evaporates quickly.
• Windshield washer fluid: Rated for temperatures well below freezing; works on windows too.
• Vinegar solution: Works down to about 28 degrees F due to the acetic acid content.

Step 1: Remove Frost First

Never try to clean a frosted window. Remove frost first by letting the window warm up naturally, or use a hair dryer on the interior side to warm the glass. Never use hot water on frozen glass — the thermal shock can crack it.

Step 2: Clean Interior Windows First

In very cold weather, focus on interior surfaces. Interior windows can be cleaned comfortably in any temperature.

• Window Squeegee Cleaner with Extension Pole and Microfiber Scrubber — clean interior windows quickly and streak-free; the extension pole reaches high windows without a ladder

Step 3: Choose the Warmest Part of the Day

For exterior cleaning, work between 10am and 2pm when temperatures are highest. Avoid early morning when frost is most likely and late afternoon when temperatures drop quickly.

Step 4: Work Quickly

In cold weather, work one window at a time. Apply solution, scrub, and squeegee immediately before the solution can cool too much. Do not let solution sit on the glass.

Step 5: Dry Thoroughly

In freezing temperatures, any water left on the glass or frame will freeze. Dry all surfaces thoroughly with a clean microfiber cloth immediately after cleaning.

Winter Interior Window Maintenance

In winter, interior windows often develop condensation that leaves mineral deposits when it dries. Wipe these down regularly with a dry microfiber cloth to prevent buildup. If condensation is severe, run a dehumidifier or improve ventilation.

Safety Note

Never clean exterior windows from a ladder in icy or wet conditions. Use an extension pole from the ground instead.