ARCHITRAVE. Decorative moulding framing a door or window, often referring to the complete trim assembly including casing and header detail.
ASTRAGAL. A small, rounded moulding profile used as an accent detail or between double doors.
BACK BAND. Rabbeted moulding surrounding the outside edge of casing.
BACKER. Flat stock or build-up material installed behind mouldings to increase projection or create a larger composite profile.
BASE. Moulding applied where floor and walls meet, forming a visual foundation.
BASE CAP. Decorative moulding installed flush against the wall and top of an S4S baseboard.
CASED OPENING. An interior opening without a door that is finished with jambs and trim.
CASING. Moulded or surfaced-four-sided pieces of various widths and thicknesses for trimming out door and window openings.
CORNER BLOCKS. Square blocks used in place of mitering the sides and head casing.
COVE. Moulding with a concave profile used at corners, particularly as a ceiling cornice.
CHAIR RAIL. Wooden moulding placed along the lower part of the wall to prevent damage.
CROWN. Highest part of built-in or wall, often above eye level, usually the upper trim on interior walls.
DENTIL BLOCK. A smaller rectangle block which can be spaced closely together in a series or in sequence with moulding and projecting like teeth as used in cornice, front entrances and mantels, and crossheads.
DOOR STOP. Moulding nailed to faces of the door frame to prevent the door from swinging through
DROP. The vertical distance a moulding extends downward from its highest point, commonly referenced with crown moulding to determine how far it travels down the wall.
ENTABLATURE. The superstructure of moldings and bands which lie horizontally above columns, resting on their capitals.
FILLET. A small, flat surface or narrow band separating decorative moulding elements. Often used between curves in a profile, and in stair systems as the strip installed between balusters in a plowed handrail or shoe rail.
HAND RAIL. Hand support in a stairwell
JAMB. Top and two sides of a door or window frame
MOULDINGS. Ornamental strips used to decorate a surface, often used to accent or emphasize the ornamentation of a structure and to conceal surface or angle joints.
NOSING. Rounded edge of a stair step
PANEL MOLD. a decorative pattern, originally used to trim out raised panel wall construction. Most useful fabricated as a frame, surrounding attractive wall coverings for a paneled effect on walls.
PROJECTION. The horizontal distance a moulding extends outward from the wall or surface it is applied to. Often used with crown moulding to describe how far it projects across the ceiling.
RABBET. A recess or groove cut into the back or edge of a moulding to allow it to overlap another piece.
ROSETTE / PLINTH BLOCK. Rosette is a decorative block in the upper corner of windows and doors. Plinth is the base block which is placed on both sides of the door resting on the floor.
SHOE RAIL. Primarily used for closed stairs with a curb wall. The shoe rail sits on top of the curb wall and the balusters fit inside the shoe rail. The fillet is cut and pieced between the balusters.
SHOE MOLD. Quarter round trim applied at the bottom of baseboard where it meets the floor.
SPRING ANGLE. The angle at which crown moulding sits between the wall and ceiling. Common spring angles are 38° and 45°, which determine how the moulding is cut and installed.
TONGUE & GROOVE. Lumber machined to have a groove on one side and a protruding tongue on the other side, so that pieces fit snugly together with the tongue of one fitting into the groove of the other.
WAINSCOTING. Lower interior wall surface (usually 3 to 4 feet above the floor) that contrasts with the wall surface above it.
WINDOW SILL. Interior trim member serving as a window frame sill cap