Mortar

Mortar joint finishes fall into two classes: tooled and troweled joints. In the tooled joint a special tool is used to compress and shape the mortar in the joint. In the troweled joint excess mortar is cut off (struck) with the trowel with no further finishing.

Of the mortar joints illustrated below only the concave, v-shapes, grapevine, and weathered are recommended for exterior applications.

Concave

Severe weather
resistance
(Tooled joint)

V-Shape

Severe weather
resistance
(Tooled joint)

Grapevine

Severe weather
resistance
(Tooled joint)

Weathered

Severe weather
resistance
(Troweled joint)

Beaded

Moderate weather
resistance
(Troweled joint)

Struck

Moderate weather
resistance
(Troweled joint)

Flush

Poor weather
resistance
(troweled joint)

Raked

Poor weather
resistance
(troweled joint)

Extruded

Poor weather
resistance