Short Answer
Complete Explanation
In construction and carpentry, brickmold refers to the exterior trim that wraps around the perimeter of a door frame. It is designed to bridge the gap between the door jamb and the exterior siding or masonry of a house, providing a finished look while protecting the structure from the elements.
- Functional Purpose: Brickmold acts as a weather barrier. By sealing the joint between the door frame and the wall, it prevents rainwater and wind from penetrating the interior of the wall cavity.
- Aesthetic Purpose: It covers the rough opening and the expansion gap required for the door to be installed squarely, hiding unsightly gaps or insulation foam.
- Material Composition: While historically made of wood, modern brickmold is frequently manufactured from composite materials, PVC, or aluminum to increase resistance to rot and moisture.
History / Background
The term “brickmold” originates from the era when brick was the primary exterior cladding for many permanent structures. In these builds, the door frame was set into the brickwork, leaving a gap that needed to be filled and finished. Carpenters used a specific molding profile to transition the flat surface of the door jamb to the textured surface of the brick. Over time, as siding materials evolved to include vinyl, aluminum, and wood shingles, the term remained a standard industry descriptor for exterior door casing, regardless of whether the home was actually built with bricks.
Importance and Impact
The primary impact of brickmold is the preservation of the building’s envelope. Without a properly installed and caulked brickmold, moisture can seep into the subfloor and wall studs, leading to wood rot, mold growth, and structural degradation. From an architectural standpoint, brickmold allows for a level of customization, as different profiles and widths can be used to match the overall style of the home’s exterior trim.
Why It Matters
For homeowners and builders, understanding brickmold is essential for proper maintenance and replacement. Because it is exposed to the harshest environmental conditions, brickmold is often the first part of a door assembly to show wear. Identifying when brickmold is rotting or peeling allows a homeowner to perform necessary repairs before water damage reaches the interior of the home. Furthermore, knowing the difference between brickmold and interior casing ensures that the correct materials are purchased during renovations.
Common Misconceptions
Brickmold is the same as interior door casing.
While both are trim, interior casing is designed for aesthetics and indoor climate, whereas brickmold is specifically engineered for exterior weather resistance and a different profile to fit against outer walls.
Brickmold is only necessary for brick houses.
Brickmold is used on almost all exterior door types, including those installed in vinyl, wood, or stucco siding, to seal the gap between the frame and the wall.
FAQ
Can I replace wood brickmold with PVC?
Yes, PVC brickmold is a common upgrade because it does not rot and requires less maintenance than natural wood.
How do I know if my brickmold is rotting?
Look for soft spots, peeling paint, discoloration, or visible gaps where the trim meets the house siding.
Does brickmold go on the inside of the door?
No, brickmold is specifically the exterior trim. The interior trim is referred to as interior casing or trim.
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