Name it, then deal with it
Nine things land on Front Range glass. Each needs something different.
Each Front Range season leaves a different film on the glass. Name what is on yours, and you know whether rain, a hose, a crew or your installer should deal with it.
When does each one peak?
The Front Range year, read off the glass.
| Months | What lands | What it usually needs |
|---|---|---|
| November to April | Snow and ice | Sun and time, never a rake |
| April to June | Pollen | A wash once the season ends |
| May to August | Hail | A look from the ground, then a storm check |
| May to October | Leaves, seeds and sap | Hand work on sap, a rinse after cottonwood |
| Spring and summer | Pigeons nesting | Photos, then the installer or a wildlife specialist |
| July to October | Dust and road grime | A late-summer wash |
| July to October | Wildfire smoke and ash | A rinse once the smoke clears |
| All year | Bird droppings | Soaked and lifted by hand |
| After hose or sprinkler | Hard water spots | Pure water and a soft brush |
Will rain do the job?
Sometimes. A hard storm rinses loose dust off steep glass. Light rain can make it worse: a 2025 Solar Energy study by Alzahrani and colleagues found rain under 1 mm a day increased dust buildup and adhesion on flat modules.
Is the film costing you?
Put your system size into the output check and see before you book anything.