Window Types
Double Hung Windows
Two vertically sliding sash. Restoration focuses on balance systems, parting stops, and the meeting rail seal that governs air infiltration.
Common failure modes
- Broken balances
- Painted-shut sash
- Meeting rail air leakage
- Sill and stool decay
Restoration approach
Both sash are pulled, stripped, and rebuilt; balances replaced; jamb liners renewed; meeting rail interlock restored to factory tolerance.
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.
Fixed
Non-operating units in direct-set or sash-in-frame configurations. Failures are almost always glazing- or frame-related rather than mechanical.
Picture
Large-format fixed glazing, frequently the visual centerpiece of a room. Weight and span demand careful spacer and setting-block engineering.