Lap Joint

Lap Joint

Definition: A Lap Joint is a woodworking technique in which two pieces of wood overlap each other, creating a joint that is often glued, nailed, or screwed together for stability. In picture framing, lap joints are commonly used in basic, rustic, or utilitarian frames where decorative detailing is minimal, but strength and alignment are required.

Key Features

• Overlap: One piece of wood partially covers the other, increasing surface area for adhesive or fasteners.
• Simplicity: Easier to cut and assemble compared to complex joints like dovetails or mortise-and-tenon.
• Strength: Provides good mechanical stability, especially when reinforced with glue, nails, or screws.
• Visual Appearance: Typically leaves a visible overlapping section; often used in rustic or industrial-style frames where this is acceptable or desired.

Applications in Framing

• Used for constructing simple wooden frames without intricate joinery.
• Can be reinforced with Spline Joints, V Nails, or Biscuits for added durability and alignment.
• Often combined with adhesive to secure corners and maintain frame squareness.
• Suitable for larger frames where high-end decorative joints are unnecessary.

Related Terms

• Unjoined
• Spline Joint
• V Nails
• Biscuit