Mortar joint


In masonry, mortar joints are the spaces between bricks, concrete blocks, or glass blocks, that are filled with mortar or grout. If the surface of the masonry remains unplastered, the joints contribute significantly to the appearance of the masonry. Mortar joints can be made in a series of different fashions, but the most common ones are raked, grapevine, extruded, concave, V, struck, flush, weathered and beaded.
In order to produce a mortar joint, the mason must use one of several types of jointers, rakes, or beaders. These tools are run through the grout in between the building material before the grout is solid and create the desired outcome the mason seeks.

Repointing

Although good-quality bricks may outlast civilizations, the mortar that bonds them can crack and crumble after a number of years. Water penetration is the greatest degrader of mortar, and different mortar joints allow for varying degrees of water-resistance. For maintenance, degraded mortar joints need to be renewed by removing the old mortar and applying new mortar, a process known as "repointing".

Types of joints

Mortar joints in brickwork take up a considerable large amount of a wall's surface area and have a significant influence on the wall's overall appearance. Some joint profiles accentuate their individual designs, while others merge the bricks and mortar to form a flush, homogeneous surface.
Mortar joints vary not only by their appearance, but also by their water-resistance properties.
The following are the most common types of mortar joints:
;Concave joint
;V-joint
;Weather joint
;Grapevine joint
;Extruded joint
;Beaded joint
;Struck joint
;Raked joint
;Flush joint
;Tuckpointing