Window Washing Guide
§ THE BLOG12 POSTS · UPDATED WEEKLY

The weekly column.

Seasonal pieces, product tests, contrarian takes, and the hacks we keep seeing on the internet that we keep having to unwind. Lighter than the encyclopedia. Still the same chemistry.

LATEST
13
MAY 2026
INDUSTRY·3 min read

Vitro promotes Shawn Winn to lead Western regional sales

Vitro Architectural Glass moves a four-year Central Plains commercial account manager up to run the Western desk. A small piece of trade news that quietly matters.

BY WINDOW WASHING GUIDE NEWS DESK
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INDUSTRYMAY 12, 2026

Two presumptive hantavirus cases revive the question of who actually cleans

Two presumptive hantavirus cases were reported this week, on the heels of a cruise-ship outbreak this spring. The cleaning trade keeps being the invisible variable in the public-health story. We have a problem with that.

WINDOW WASHING GUIDE NEWS DESK · 4 min read
INDUSTRYMAY 11, 2026

Asthma Awareness Month is a reminder that windows are an allergen reservoir

May is Asthma Awareness Month, and CMM's coverage this week loops back to a problem we already write a lot about: pollen, mold, and the role of exterior glass in carrying allergens indoors. Here's the through-line, and the tools we built around it.

WINDOW WASHING GUIDE NEWS DESK · 4 min read
SEASONALMAY 10, 2026

May is the worst month to wash your windows. Three things to do anyway.

Every spring my phone lights up with people who want sparkling windows for Mother's Day. Every spring I tell most of them to wait. Here's why — and what to do if you can't.

JAN DAVENPORT · 7 min read
PRODUCTMAY 8, 2026

We tested five 'streak-free' formulas. Two are good. One is dangerous.

Five bottles, four panes, one chemistry-forward editor with a [pH](/glossary#ph) meter and a grudge. The results were not what the marketing copy suggests.

MARA WHITFIELD · 8 min read
OPINIONMAY 6, 2026

The 'Rain-X your house windows' trick is back on TikTok. It is still bad advice.

Every spring, the same hack resurfaces — spray Rain-X on your house windows and never wash them again. Every spring, I get a message from a homeowner asking me how to undo it. The chemistry is not on your side.

EASTON GIORDANO · 6 min read
HOW-TOMAY 4, 2026

The fan stroke is a finishing move, not a beginner's technique. Here's when to actually use it.

Every YouTube tutorial teaches the [fan stroke](/glossary#fan-stroke) on the first day. That is the wrong day to learn it. Here is when to actually reach for it, and what to do until you can.

ABBY GIORDANO · 9 min read
INDUSTRYMAY 4, 2026

The federal apprenticeship for cleaning is here. What it means for window-cleaning operators.

ISSA's new Department of Labor-approved Cleaning Technician Registered Apprenticeship is the first national framework that treats cleaning as a skilled trade. Window cleaning sits inside that umbrella — uncomfortably, and usefully. Here's our read.

WINDOW WASHING GUIDE NEWS DESK · 5 min read
INDUSTRYMAY 4, 2026

Skyline's Color + Water decorative glass is another reason to identify substrate first

A new printed-and-tempered decorative line from a Chicago studio: watercolor-derived art, scaled large, on glass intended for partitions and feature walls. Another piece of stock the trade will be asked to clean without knowing what's on the surface.

WINDOW WASHING GUIDE NEWS DESK · 4 min read
INDUSTRYMAY 2, 2026

The window cleaner of Bisbee, Arizona, has 142 customers. He has had most of them for twenty years.

I drove down from Phoenix on a Tuesday to ride along with the only window cleaner in a 4,800-person town. What he taught me about the trade had nothing to do with technique.

DREW GIORDANO · 8 min read
HOW-TOAPR 30, 2026

Window screens: the part of the job nobody includes in the estimate.

Half the call-backs I get on residential jobs are about screens, not glass. The screens are filthy, the screens have a dent, the screens are leaning against the siding because somebody forgot how they came out. Here's the simple system.

JAN DAVENPORT · 7 min read
INDUSTRYAPR 30, 2026

Vitro's EcoArmor topcoat: a factory coating that survives tempering, headed for the field

Vitro launched a protective full-surface topcoat on its Solarban 90 low-e glass that stays on the lite through tempering and reportedly cuts cycle times. The pipe between this and what a route-cleaning operator sees on a finished facade is short.

WINDOW WASHING GUIDE NEWS DESK · 4 min read