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*The Angi rating for Window Cleaning companies in Montreal, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Cleaning needs.

*The HomeAdvisor rating for Window Cleaning companies in Montreal, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Cleaning needs.

Last update on June 22, 2026

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Window Cleaning questions, answered by experts

Yes, you can use glass cleaner on outside windows, but only after you’ve rinsed away as much debris as possible. Using glass cleaner on top of a layer of dirt will only make it harder to clean. 

Professionals use HEPA vacuums, industrial-strength cleaners, and microfiber cloths for effective cleaning without damaging surfaces.

The most likely cause of smearing or streaking after cleaning your windows is residue left on the glass from the cleaner you’re using. Consider diluting the solution and cleaning them again, or use old newspaper to dry the windows after cleaning, as this will soak up any residual material. Additionally, aim to clean your windows on a cool, cloudy day, as cleaners will dry more quickly on the glass if it’s hot and sunny, promoting streaking.

Yes, but professionals use specialized equipment and cleaning solutions to safely achieve streak-free, long-lasting results.

You should avoid using abrasive materials and harsh chemicals when cleaning windows. Abrasive tools like scrubbing pads, rough cloths, or steel wool can permanently scratch and damage the glass. Harsh chemical cleaners containing alcohol or ammonia can damage window treatments, frame materials, and special features like tinting. It is also best to use distilled or filtered water instead of hard water, which can leave spots or streaks. For best results, use a clean microfiber cloth to wash the glass and old black and white newspapers to dry it without leaving streaks.

The Montreal, WI homeowners’ guide to window cleaning services

From average costs to expert advice, get all the answers you need to get your job done.

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