What Should You NOT Use to Clean Windows?

Amazing Finish Windows • May 30, 2025

TL;DR;

Avoid using harsh chemicals like ammonia and bleach, abrasive tools such as steel wool, and outdated materials like paper towels to clean windows. These can damage glass, leave streaks, or deteriorate window seals. Instead, use pH-neutral solutions, microfiber cloths, and proven techniques for a clear, damage-free shine.

Why the Wrong Products Can Damage Your Windows

Using the wrong cleaning products can lead to long-term damage that isn’t always visible at first. From glass scratches to chemical corrosion, improper window cleaning can lower energy efficiency, compromise aesthetics, and even void manufacturer warranties.

At Amazing Finish Windows, we’ve seen firsthand how avoidable mistakes cost homeowners and businesses more than they realize. Let’s explore the science behind the damage.

Chemical Damage to Window Glass and Seals

Some cleaning agents contain chemicals that react negatively with window glass or seals:

Ammonia and acid-based cleaners can cause chemical etching.
pH imbalance in harsh cleaners may degrade rubber seals and glazing.
Oxidation from strong chemicals can leave lasting haze or cloudiness.

Double-glazed windows are particularly vulnerable. Their airtight seals can weaken, allowing moisture to seep in—leading to foggy panes and expensive repairs.

Physical Abrasion from Inappropriate Tools

Scratches on glass may not always be obvious—but over time, they scatter light and make windows look dull. Here’s what causes it:

Steel wool and scrubbing pads can leave micro-scratches.
Abrasive sponges damage the glass surface, even on “tough” jobs.

If you've ever wondered what happens if you use steel wool on glass, the answer is permanent scarring and reduced clarity.

The Top 7 Products and Tools You Should Never Use

Knowing what not to clean windows with can save you time, money, and effort. Below are the most common offenders we see at Amazing Finish Windows.

Ammonia-Based Glass Cleaners

They may seem effective, but ammonia damages tinted windows and can break down window films.
In enclosed spaces, ammonia fumes are hazardous to your health.
Double-pane windows are especially sensitive, as ammonia can react with seals and coatings.

Vinegar (in the Wrong Contexts)

Vinegar is acidic, and while it works in diluted forms, undiluted vinegar:
Can etch stone sills and leave marks on treated frames.
Degrades window tints if sprayed directly on the film.
Is often mislabeled as a “natural solution” but needs careful handling.

Bleach and Strong Chemicals

Bleach corrodes metal parts, such as window latches and hinges.
It releases harmful fumes in enclosed areas.
It’s unsafe for colored or coated window trims and can degrade protective layers.

Abrasive Scrubbers and Steel Wool

Causes visible and invisible scratches.
Even light pressure can scrape off protective coatings.
Reduces transparency and increases future grime buildup.

Paper Towels and Newspapers

Lint residue clings to freshly cleaned windows.
Ink from newspapers can smear and stain white frames.
Both are highly absorbent, which leads to streaks when moisture evaporates unevenly.

Hard Water and Mineral-Rich Tap Water

Water with high calcium and magnesium leaves mineral deposits.
Leads to water spots, cloudy films, and long-term staining.
Especially problematic if you let water air dry in sunlight.

Cleaning in Direct Sunlight

The heat causes solutions to evaporate too fast, leaving streaks.
Glass may expand slightly in the sun, distorting pressure points during cleaning.
Cleaning midday or during heatwaves amplifies these issues.

Better Alternatives: What You SHOULD Use Instead

At Amazing Finish Windows, we’ve developed methods that are safe, effective, and easy for homeowners and pros alike. Here's what works.

Best Window Cleaning Solutions (DIY and Store-Bought)

Use products that are pH-neutral and designed for glass surfaces. Some reliable options include trusted Homemade Window Cleaning Solutions that are eco-friendly and cost-effective, as well as commercial window cleaners labeled as streak-free and tint-safe.

Commercial window cleaners labeled as streak-free and tint-safe.
DIY mix: 1 part white vinegar (diluted) + 2 parts distilled water + a few drops of dish soap.
Avoid sudsy or foaming agents—more soap doesn’t mean better cleaning.

Proper Tools: What Professionals Use

Cleaning like a pro doesn’t require expensive gadgets—just the right tools:

Microfiber cloths for wiping and polishing without lint.
Rubber squeegees to prevent streaks and remove moisture evenly.
Soft sponges that lift dirt without scratching.
Telescoping extension poles for high or hard-to-reach windows.

Safe Practices for Optimal Results

Use the two-cloth method: one wet to clean, one dry to polish.
Clean in a circular motion to avoid visible streaks.
Always dust the frame first to prevent dirt from dripping onto the glass.
Replace cloths or rinse them often to avoid cross-contamination.

How to Clean Windows Based on Type

Different windows require different care. A one-size-fits-all approach can lead to damage, especially for specialized installations.

How to Clean Tinted Windows Safely

Use ammonia-free cleaners to preserve the film.
Clean with gentle microfiber only—never paper towels or rags.
Avoid vinegar unless diluted and applied sparingly.

Cleaning Double-Glazed and Insulated Glass

Never spray liquids near edges or seals—moisture intrusion can lead to fogging.
Use minimal solution and focus on surface-level grime only.
Inspect seals regularly to ensure longevity.

Tips for Historic or Antique Windows

Clean gently using natural sponges and distilled water.
Use mild soap solutions and avoid modern chemicals that may react with aged materials.
Be careful around leaded glass and wooden frames, which are more fragile.