Fastening brick mold, a type of exterior trim commonly used around doors and windows, involves securing it firmly to the door/window frame and the surrounding wall structure using nails, often combined with adhesive on mitered joints for a tight fit.
Key Steps for Fastening Brick Mold
Installing brick mold effectively requires careful preparation and precise fastening techniques. The process typically involves preparing the trim pieces, applying adhesive where necessary, and nailing the mold into place following specific guidelines.
Preparing the Mitered Ends
For corners where two pieces of brick mold meet, such as at the top corners of a door or window frame, you will typically use mitered cuts (usually 45 degrees) to form a 90-degree angle.
- Apply Adhesive: Spread a small amount of glue on the mitered end of one brick mold piece. This adhesive helps create a stronger joint and prevents separation over time, especially on exterior applications.
- Align Corners: Carefully line up the glued, mitered end with the miter cut on the adjacent piece (e.g., lining up the side piece miter with the miter on the head piece). Ensure the joint is tight and the faces are flush.
Nailing Strategy and Spacing
Once the pieces are aligned, the primary method of fastening is nailing. Consistent spacing ensures the trim is securely attached along its entire length.
- Spacing: Nail the brick mold approximately every 16 inches along its length. This spacing provides adequate support and prevents the trim from bowing or coming loose.
Nail Types and Placement
Choosing the correct nail size and driving it into the appropriate structural element is crucial for a secure installation.
- Nailing into the Frame (Jamb): Use smaller finish nails, such as #3 or #4 finish nails, to nail through the brick mold and into the door or window frame (the jamb). These nails help hold the trim tightly against the frame.
- Nailing into the Wall Framing: Use slightly larger finish nails, such as a #6 finish nail, to nail through the brick mold and siding (if applicable) into the wall framing (studs or cripples) surrounding the opening. These nails anchor the trim to the main structure.
| Nail Type | Placement Location | Purpose |
|---|---|---|
| #3 or #4 Finish | Into Door/Window Frame | Secures mold tightly to the opening frame |
| #6 Finish | Into Wall Framing/Studs | Anchors mold to the building structure |
Ensuring Proper Alignment (Reveal)
As you fasten the brick mold, pay close attention to its positioning relative to the door or window frame.
- Maintain Uniform Reveal: Be careful to keep the "reveal" uniform. The reveal is the small, consistent overlap or spacing between the edge of the brick mold and the edge of the door or window frame itself. A consistent reveal creates a professional, clean look.
Additional Considerations for Exterior Trim
When installing brick mold on the exterior of a building, consider these extra steps:
- Pre-drilling: For harder wood trim or in cold weather, pre-drilling pilot holes slightly smaller than the nail diameter can prevent the wood from splitting.
- Sealant: After installation and before painting, apply a quality exterior caulk to seal any gaps between the brick mold and the wall, as well as at the mitered joints. This prevents water intrusion.
- Finishing: Paint or stain the brick mold with exterior-grade products to protect it from the elements.
By following these steps and utilizing the recommended nail types and spacing, you can securely fasten brick mold around your doors and windows, providing protection and enhancing curb appeal.
