Sonlight has cleaned windows along Colorado's Front Range since 1978. We publish a page for 28 Colorado cities, from Fort Collins in the north to Colorado Springs in the south. This page is the part that applies to all of them: what the Front Range does to glass, and why the answer changes depending on which end of the corridor you live on.
37,000+
Colorado jobs completed
28
Colorado cities with a published local page
1999
Earliest Colorado job still on record
Job counts are pulled from our own scheduling system, not estimated. The company was founded in 1978; 1999 is simply where the current record system begins.
Six mechanisms account for nearly everything we are called out for in Colorado. If you can work out which one you are looking at, you already know whether you need a cleaning, a restoration, or nothing at all.
Not sure which one you have? Work through the diagnostic pages and match the symptom.
Each city page carries its own water source, elevation, local conditions and price band. Where we have completed work in a city, the number below is the real count from our scheduling system.
Fort Collins, Loveland, Windsor, Greeley
Boulder and the east valley
5,328 ft · soft water
11,568 jobs completed since 2010
5,335 ft · moderate water
297 jobs completed since 2011
5,237 ft · moderate water
296 jobs completed since 2011
5,423 ft · moderate water
95 jobs completed since 2011
5,026 ft · hard groundwater
233 jobs completed since 2011
4,980 ft · soft water
1,154 jobs completed since 2011
The city and its inner suburbs
5,280 ft · moderate water
14,166 jobs completed since 1999
5,471 ft · harder surface water
436 jobs completed since 2010
5,518 ft · moderate water
1,138 jobs completed since 2010
5,344 ft · moderate water
640 jobs completed since 2010
5,384 ft · moderate water
464 jobs completed since 2011
5,351 ft · moderate water
168 jobs completed since 2012
5,384 ft · moderate water
429 jobs completed since 2010
5,675 ft · moderate water
540 jobs completed since 2010
5,420 ft · moderate water
461 jobs completed since 2011
5,164 ft · moderate water
116 jobs completed since 2012
The Tech Center and the southern suburbs
Between Denver and Colorado Springs
Colorado Springs
We also routinely work in surrounding communities including Evergreen, Morrison, Niwot, Greenwood Village, Lone Tree, Brighton, Northglenn, Henderson, Nederland, Lyons and Palmer Lake, which do not yet have their own pages. If your address is on the Front Range, the instant quote confirms coverage in about thirty seconds.
Every service below is available across the Front Range. Each links to the full guide; each city page then covers how that service differs in that particular town.
Residential window cleaning means a full clean of every visible window, inside and out, including screens, sills, and frames.
Professional gutter cleaning removes all debris from your gutters and downspouts so spring snowmelt and summer storms drain properly.
Pressure washing uses high-pressure water (~3,000 PSI) to remove dirt, mildew, and stains from durable hard surfaces.
Solar panel cleaning restores lost output by removing dust, pollen, bird droppings, and mineral deposits without damaging the panel surface.
Soft wash kills mildew, algae, and bacteria on exterior surfaces using low pressure (~500 PSI) and a biocidal cleaning solution.
Most window screen problems can be repaired on-site: torn mesh, bent splines, missing handles, at $25-$45 per window.
Hard water stains can be removed if treated within ~6 months. Older stains may have etched the glass and require professional cerium oxide polishing.
Post-construction window cleaning is a deeper clean for new builds, it removes silica dust, paint specks, stickers, and construction film that standard cleaning won't touch.
Broadly, the cities drawing on Denver Basin groundwater: Highlands Ranch, Parker, Castle Rock, Centennial, Monument and Erie among them. Aurora is moderate to hard, drawing on blended surface supplies including reused water. Boulder, Fort Collins and Colorado Springs run on mountain snowmelt and are soft. This matters because hard-water deposits do not wash off; removing them is a restoration job, and on soft-water supplies you usually do not need one.
Twice a year is the honest baseline for most Front Range homes: once after the spring cottonwood and pollen finish, once in autumn. Move toward three or four times a year if you are above about 6,000 feet, if you have west-facing glass taking full afternoon sun, or if sprinklers hit the windows. Below that, more frequent cleaning is not buying you much.
Yes, above roughly 35 degrees Fahrenheit, and winter is often the best season for it. The air is dry, there is no pollen or cottonwood in it, and the low sun angle shows streaks that summer light hides. We watch the forecast and reschedule rather than working in a freeze.
Our published city pages cover the Front Range corridor from Fort Collins to Colorado Springs. We do regularly work in the nearer foothill communities including Evergreen, Morrison and Nederland. If you are not sure whether your address is in range, put it into the instant quote and it will tell you in about thirty seconds rather than making you wait for a callback.
The work is the same and so are the standards. The conditions are not. Colorado glass is shaped by altitude, hail, cottonwood and freeze-thaw. New Mexico glass is shaped by evaporative cooler mineral bleed, monsoon splash from bare caliche, and juniper pollen in mid-winter. We have been working in Colorado since 1978 and opened New Mexico in 2026, and we say so on every New Mexico page rather than implying decades of history there.
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