What the inspector means
Fogging, haze, or condensation between panes usually means the insulated glass seal has failed. The window may still operate even though the glass has lost performance.
Common causes
- Age and seal deterioration
- Heat/UV cycling
- Frame movement
- Installation stress
What the repair usually looks like
Replace the insulated glass unit, the sash when available, or the full window if the frame is also damaged or obsolete.
Who should handle it
A glass company or window contractor is usually the best fit. Finish carpentry may be needed if trim or the opening is damaged.
Planning cost
$250-$800 for many glass or sash replacements; full window replacement is commonly higher.
Access, materials, hidden damage, minimum charges, permits, and existing conditions can change actual cost. Use this range for planning, not as a quote.
Common questions
Is this inspection finding urgent?
Usually moderate. Fogging, haze, or condensation between panes usually means the insulated glass seal has failed. The window may still operate even though the glass has lost performance.
What repair is usually done?
Replace the insulated glass unit, the sash when available, or the full window if the frame is also damaged or obsolete.
Who should handle the repair?
A glass company or window contractor is usually the best fit. Finish carpentry may be needed if trim or the opening is damaged.