What it covers
The side of the glass facing the weather. Here that means dust carried in on the wind, monsoon rain that dries where it lands, and spray from sprinklers or a hose.
The East Valley problem
Local water is hard. When it dries on glass, the calcium and magnesium stay behind as spots. Official numbers by town are in our hard water guide.
What moves the quote
Number of windows, number of stories and how easy the glass is to reach. Robert looks at all of that in person, and the quote is free.
Common questions
Will exterior cleaning remove hard water spots?
Point out the spots at your free quote and ask Robert what he can do for that glass.