What sticks to Wasatch glass

Winter inversions leave a dull film on exterior glass from Ogden to Provo. It is not a fingerprint and it does not rinse off in a light storm. Exterior window cleaning is what takes it off. Interior glass can look fine while the outside looks smoked.

Valley dust settles on west-facing panes. At the Point of the Mountain, around Draper and Lehi, wind adds more of it. A house aimed at the view shows this faster than a pane on a side street, because you are looking through a larger piece of glass.

Sprinklers along the Wasatch Front throw mineral water onto ground-floor glass. It dries into spots. Tell us if that is the pane you care about. It is a different kind of dirty than dust, and it is usually the lower windows.

New buildings hold construction dust on the glass and in the tracks. The first wash after a build is heavier than a maintenance visit. Say the building is new.

Summer adds bug film, especially on the west side of Utah Valley, closer to the lake. Provo and Orem see it. A spring wash does not cover August. If that is the problem, say the season when you call (801) 395-4650.