Fog or moisture between panes
Moisture between panes commonly indicates that the insulated sealed glass unit has failed. The sash and frame still need to be assessed.
COMMON GLASS PROBLEMS
What the visible symptoms may indicate
Cracked or broken glass
Photos help identify the opening, approximate size, pane count and whether special glass may be involved.
Condensation on the room-side surface
Interior condensation can involve indoor humidity, airflow and surface temperature. It is not automatically proof of failed sealed glass.
Damage around the glass
Damage to glazing stops, sash, frame or exterior components can change whether glass-only replacement is practical.
ASSESSMENT
What we need to review
Clear photos
Include one photo of the complete window, one close view of the problem and any visible labels or spacer markings.
Location and access
Tell us which room or elevation is affected and whether the opening has unusual access conditions.
Problem description
Describe when the issue appeared, whether it changes with weather and whether the window still opens, closes and locks.
GLASS OR COMPLETE WINDOW
The surrounding components guide the decision
Glass-only replacement
May be appropriate when the frame and sash remain serviceable and the failed glass unit can be matched and installed.
Complete replacement
May be considered when the window has multiple failures, significant deterioration, unavailable components or a planned change in style or performance.
Explore window replacement →No diagnosis from one symptom
A photo review helps us prepare, but final measurements and site conditions may still need to be confirmed in person.
BEFORE WE MEASURE
Send photos that show the whole problem
Start with a photograph of the complete window from inside, then add a close view of the damaged or fogged area. If safely visible, include any labels, etching or spacer markings and tell us whether the sash still opens, closes and locks.
“Foggy glass” can mean moisture trapped between panes or condensation on the room-side surface. Those conditions do not automatically have the same cause or solution. Exact pane count, thickness, coatings, safety requirements and measurements may still need to be confirmed before a replacement unit can be ordered.
Do not handle unstable broken glass. Keep people and pets away from the affected area and tell us if the opening needs urgent temporary protection.