About Thorn Exterior Services
See the difference. Feel the difference.
A Placer County window cleaning company built on a simple idea: the water should do the work.
Our Story
Thorn Exterior Services LLC was founded in 2026 in the Placer County area of California. We started with a frustration we'd seen everywhere: window cleaners rushing through jobs with a squeegee, leaving streaks, spots, and edges — and homeowners paying full price for it.
So we built the company around a better method. Instead of fighting the water, we purify it. Our deionized-water system strips ordinary tap water of the dissolved minerals that cause spots and streaks. A soft nylon brush loosens the dirt, the pure water rinses it away, and the glass air-dries crystal clear. No squeegee. No streaks. No residue.
Our Method
- Brush. A soft nylon brush on a water-fed pole loosens dust, pollen, cobwebs, and grime — gentle on glass, screens, and frames.
- Rinse. Deionized pure water floods every surface, carrying everything away.
- Air-dry spot-free. Mineral-free water evaporates clean. That's the whole trick — and it works.
Where We Work
We're based in the Placer County area and serve Rocklin, Roseville, Lincoln, Loomis, Granite Bay, Folsom, and El Dorado Hills — across Placer, Sacramento, and El Dorado counties. See all service areas.
How Quotes Work
Simple: request a quote or call (916) 803-4778, tell us about your home, and we'll reply with a flat-rate price before any work is scheduled. No pressure, no obligation, no surprise charges. We work Monday through Friday, 9am to 6:30pm Pacific.