A groove or rectangular section for receiving the end of a board

A separation of piles or layers of wood through failure of the adhesive.

Porous crystalline substance used to absorb moisture and solvent vapors from the air space of insulating glass units.

The ability of a material to stay put or to resist changes in its dimensions due to temperature, moisture or physical stress variations; stability of a material.

A millwork assembly of stiles, rails, and panels that swings, slides, tilts up or folds in order to close an opening in a wall or cabinet. A modern door may be used on the exterior of interior, and may be either flush or panel type. Historically, there were two types of doors: ledge and brace (or batten) and paneled doors. An exterior door used before the 17^th century, the ledge and brace style was constructed from vertical panels that were held together with a Z-shaped brace nailed to the back. A Tudor-style door is similar to the ledge and brace except that it is held together by oak planks across the back instead of a Z-brace. In the 1600?s, the paneled door came into use as an interior door. The first examples were made with two or four panels, but then near the end of the 18^th century, a six-paneled version was made, called a Georgian door.

Same as casing; may be an interior or exterior door casing; exterior door casings are installed only on the outside of exterior door frames, especially on wood facing wood-frame exterior walls.

A group of wood parts machined and assembled to form an enclosure and support for a door; door frames are classified either as exterior or interior door frames.

The part of a door frame that surrounds and contacts the edges of the stiles and the top rail of a door. Jambs may be classified as "head"or ?side? jambs and as "plain"or "rabbeted."

Adjustable Door Jamb (Split Jamb)-
A two (sometimes three) piece split jamb consisting of a rabbeted and adjusting jamb section for walls of varying thickness; the rabbeted jamb contains a plow to receive the tongue of the adjustable member.

Flat Door Jamb-
A jamb surface four sides to which a separate wood stop may be applied. Also referred to as a one-piece jamb.

Head Jamb-
The horizontal member forming the top of the opening.

Hinge Jamb-
Side jamb in which the door hinges (butts) are applied.

Rabbeted Door Jamb-
A jamb with a rabbet on one or both edges. If both edges are rabbeted, "double-rabbeted door jamb." If one edge is rabbeted, "plain rabbeted door jamb."

Side Jamb-
The upright or vertical member forming the side of opening.

Strike Jamb-
The jamb opposite the hinge jamb on which the lock or strike plate is installed.

A sheet of thin lumber, plywood or composition material inserted into the frame formed by the stiles, rails and mullions of a door.

A face panel (usually two or more plies) of a flush door.

A space which protrudes from the roof of a house, usually including one or more windows.

Two panes of glass separated by an air space; double glazing may be accomplished by storm sash or insulating glass; this term sometimes refers to storm sash.

A removable glass panel that allows insulation and condensation control.

A joint formed by inserting a projecting wedge-shaped member into a correspondingly shaped cutout member.

Sealed insulating glass units made with a primary seal and an outer secondary seal.

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