The symptom
Dust inside a double-pane unit means the seal has failed and room air is moving between the panes. It will not wipe off, and it tends to get worse. The owner noticed it in the upper windows and called us.
The visit
The review credits Dimitri and Dennis for being on time, polite and doing quality work, and credits the office for sending updates and arrival times throughout. The photo shows one of the windows: divided lights, a roller shade at the top and a quiet street beyond, with a white pickup at the curb.
The advice
The closing line is advice for other homeowners: if you have a bad window, don’t just replace it until you check with Window Gurus. That is the point of this case, because failed glass does not always mean a new window.