Roof / Tubular Skylight

Related terms

• Skylight

  A roof-mounted window for daylight and sometimes ventilation. Flashing and curb detailing are critical to prevent leaks.

• Sash

  The framed, often movable panel that holds the glass within a window. Double-hung windows have an upper and lower sash.

• Rail

  The horizontal members of a sash; the check/meeting rail is where two sashes overlap in a double-hung window.

• SHGC (Solar Heat Gain Coefficient)

  The fraction of solar heat a window admits (0–1); lower reduces cooling load. Climate determines whether high or low SHGC is desirable.

• Prehung Door

  A door already mounted on hinges in a complete frame, ready to set into a rough opening. Faster and more reliable than hanging a slab in…

• Shim

  Thin tapered material used to plumb, level, and square a window or door in its opening before fastening. Improper shimming causes operati…

• Pocket Door

  A door that slides into a cavity inside the wall, saving the floor space a swing would consume. Requires a special framed pocket during r…

• Sidelite

  A fixed narrow glazed panel beside an entry door that adds light and a wider, grander look.