Question 1

What causes foggy windows or window seal failure?

Accepted Answer

Foggy windows are caused by failure of the airtight seal in double- or triple-pane insulated glass units. Once the seal breaks, humid air enters the space between the panes and condenses. In DFW, extreme temperature swings between summer and winter accelerate seal degradation over time.

Question 2

Can window seal failure be repaired or does the glass need replacing?

Accepted Answer

In most cases, the glass unit itself needs replacement rather than the full window frame. A glazier can replace just the insulated glass unit while keeping the existing frame, which is significantly cheaper than full window replacement. Full frame replacement is only needed if the frame is rotted, damaged, or you want to upgrade the style.

Question 3

What does window seal repair or replacement cost in DFW?

Accepted Answer

Insulated glass unit replacement in DFW costs $200–$500 per window including labor. Full window replacement (frame and glass) runs $400–$1,200 per window depending on size, style, and brand. A whole-home window replacement project averages $8,000–$20,000 for a typical DFW home.

Window Seal Failure Diagnosis