Timber Framing Joinery Techniques

The mortise and tenon joint is the backbone of traditional timber framing and remains a staple in modern heavy timber construction.

The Mortise and Tenon

• This joint interlocks two pieces of wood, creating a mechanical bond that is stronger than the wood itself.
• Using a wooden peg or pin allows the structure to move slightly during settling without losing its shape.
• Dovetailing the ends of the tenon adds a layer of security that prevents the joint from pulling apart under tension.

Modern Adhesives

• Structural epoxy can be used to fill gaps in mortise and tenon joints for a tighter seal and increased strength.
• While traditional joinery relies on friction, modern adhesives provide a waterproof bond that prevents rot.
• Engineered glulam beams allow for larger spans while maintaining the traditional aesthetic of exposed joinery.

Mastering these joints requires patience and the right set of hand tools for precise measurements.