Skylight

Related terms

• Flashing

  Thin water-resistant material installed at joints and transitions (roof-to-wall, around windows and penetrations) to direct water away an…

• Slab Door

  A door sold as just the panel, with no frame or hinges — used to replace a door in a sound existing jamb.

• Single-Hung Window

  A window with two sashes where only the bottom sash slides up to open; the top is fixed. The economical traditional double-hung alternative.

• Slider Window

  A window where one or both sashes slide horizontally. Simple, economical, and good for wide openings with limited projection space.

• Sill Pan

  A waterproof tray at the base of a window rough opening that catches and drains any water that gets past the window to the exterior.

• Sliding Patio Door

  A large glazed door where one panel slides past a fixed one. Space-efficient (no swing) with a big glass area; rollers and tracks need ma…

• Sill

  The horizontal bottom member of a window frame, sloped to shed water away from the building.

• Smart Lock

  An electronic deadbolt with keypad, app, or auto-unlock control. Adds convenience and access logging; needs battery maintenance.