Window Types
Awning Windows
Top-hinged units that shed water while open. Their horizontal bottom rail collects moisture and is often the first component to fail.
Common failure modes
- Bottom rail rot
- Compressed weatherstrip
- Seized operators
- Glazing bead separation
Restoration approach
Rail replacement with matched-grain stock, operator rebuild, new compression seal, and full re-glaze with warm-edge spacer units.
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.
Double Hung
Two vertically sliding sash. Restoration focuses on balance systems, parting stops, and the meeting rail seal that governs air infiltration.
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.