Colonial casing is the traditional stepped-and-curved trim profile used to finish the perimeter of door and window openings, covering the joint between the jamb and the wall finish. The #18 profile is a wide colonial pattern with a stepped back edge and a gently contoured face that throws a soft shadow line along the opening.

This casing comes factory primed, so the face and profiled edges are already sealed and ready for filling, caulking and a finish coat of paint. Priming also reduces the moisture movement that causes miters to open, and it gives nail-hole filler and caulk a uniform surface to bond to.

Casing is typically installed with a reveal of 1/8 to 1/4 in. off the jamb face, mitered at the head corners and fastened through the flat back with finish nails into the jamb and framing.

Key Features

• Colonial profile #18 with a stepped, contoured face for traditional interior trim work
• Factory primed on the face and profiled edges, ready for paint
• Flat, relieved back that sits tight against slightly irregular wall surfaces
• Takes finish nails cleanly and accepts standard nail-hole filler and paintable caulk
• Mills and miters readily for head-and-leg door and window casing assemblies
• Sold by the piece in a single 16 ft. length for long runs with fewer joints

Applications

• Casing interior door openings
• Casing window openings and stools
• Trimming out cased openings and pass-throughs
• Backband and built-up trim assemblies
• Renovation and repair matching of existing colonial trim
• Painted trim packages in residential interiors

Product Details

• Product Type: Colonial casing
• Profile: #18
• Finish: Primed
• Length: 16 ft.
• Sold As: Each
• Application: Interior door and window trim

Specifications

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