Window Types
Fixed Windows
Non-operating units in direct-set or sash-in-frame configurations. Failures are almost always glazing- or frame-related rather than mechanical.
Common failure modes
- Seal failure and fogging
- Glazing bead rot
- Sealant shrinkage
- Frame checking
Restoration approach
In-place glass replacement where the frame is sound, otherwise sash removal, bead replacement, and a re-bedded insulated unit.
See the full process →Related configurations
Casement
Side-hinged sash operated by a crank. Excellent seal when adjusted correctly, but hardware wear and sill exposure make them the most common restoration candidate.
Awning
Top-hinged units that shed water while open. Their horizontal bottom rail collects moisture and is often the first component to fail.
Double Hung
Two vertically sliding sash. Restoration focuses on balance systems, parting stops, and the meeting rail seal that governs air infiltration.
Picture
Large-format fixed glazing, frequently the visual centerpiece of a room. Weight and span demand careful spacer and setting-block engineering.