Windows by style
The same opening can take a casement, a tilt-turn sash or a lift-and-slide door, and each brings its own air leakage, egress and installation trade-offs. Each style below lists every line made in it, across all frame materials.
- Casement windowsCasement windows are side-hinged and crank outward. They seal tightly on all four sides, so they usually post the best air leakage and U-factor numbers of any operable style, and they meet egress at smaller sizes than hung windows.1 line
- Tilt-turn windowsTilt-turn windows are European-style sashes that tilt in for ventilation or swing in fully. They are the standard in Passive House work and give multi-point locking and very low air leakage.3 lines
- Picture windowsPicture windows are fixed windows that do not open. With no sash to seal, they give the most glass and the best thermal numbers for a given frame, and they are where large and shaped openings happen.2 lines
- Lift and slide doorsLift and slide doors are large sliding doors whose panels lift onto rollers to move and drop onto the sill to seal. They carry heavier glass and seal tighter than ordinary sliding patio doors.2 lines
- European windowsEuropean windows are windows and doors built to European norms: inward-opening tilt-turn sashes, lift-and-slide doors, multipoint locking and thick, metric frame profiles, usually installed as block frames.5 lines