Teglfuger

Teglfuger are the mortar joints between bricks in brick masonry. They bond bricks together, seal against water intrusion, and accommodate minor movement in the structure. The term teglfuger is used in Norwegian and Swedish to refer to these joints, with similar terms in other Scandinavian languages.

Materials and workmanship: Most teglfuger are formed with a cement-lime-sand mortar, though historical or vernacular constructions may use lime putty or other mixes. Mortar choice influences durability, color, and compatibility with bricks. Joints are formed during laying with a trowel and jointing tools to create a uniform depth and finish, and to help shed water.

Joint profiles: Common teglfuger profiles include concave, flush, struck, weathered, and V-shaped joints. Concave joints are popular for their robustness and watertight feel, while weathered or struck joints can help shed water on exterior walls. The choice of profile affects both drainage performance and the wall’s appearance.

Maintenance and durability: Teglfuger require periodic inspection and maintenance. Frost cycles, moisture, and rising salts can cause cracking, spalling, or loss of adhesion. Repointing replaces damaged mortar with compatible material, restoring strength and preventing water ingress. Preservation practices emphasize using a mortar with similar softness and elasticity to the bricks to avoid inducing damage to the surrounding masonry. Proper maintenance extends wall life and preserves appearance.