Grabbing a squeegee and a bottle of glass cleaner seems simple enough — until you're three windows in, streaking is worse than when you started, and the upstairs windows are still untouched.
What DIY Actually Costs You
Materials are cheap, but time isn't. A full home's exterior and interior windows typically takes a homeowner 3 to 5 hours to do properly — and that's before factoring in a ladder, safety risk, and the streaks that come from using tap water instead of purified water.
The Hard Water Problem
Most Front Range tap water is mineral-heavy. Cleaning with it, even with a good technique, tends to leave faint spotting once it dries — the opposite of the streak-free finish most people are after.
What Professionals Bring to the Job
- Purified water systems that dry spot-free without wiping
- Proper squeegee technique that avoids streaking on the first pass
- Safe equipment for second-story and hard-to-reach windows
- Speed — a full home typically takes under an hour for a trained crew
When DIY Makes Sense
For a single ground-floor window or a quick touch-up between professional visits, DIY is perfectly reasonable. It's whole-home jobs, second-story windows, and streak-free finishes where professional service pulls ahead.
The Safety Factor
Ladder-related injuries are one of the most common home-maintenance accidents. Insured, professional crews carry the right equipment and training to safely reach upper-story and hard-to-access windows — something worth factoring into any cost comparison.
The Bottom Line
For a single accessible window, DIY works fine. For a full home — especially anything above ground level — professional service saves time, avoids injury risk, and consistently delivers the streak-free finish DIY struggles to match.
Curious what professional service actually costs for your home? Get a free estimate in minutes.