To rake joints hold the board perpendicular to the bricks and move it back and forth first along the vertical joints and then the horizontal joints.
Raked mortar joint depth.
Mortar is recessed approximately 1 2 inch from the face of stone.
In this case the mortar bed is raked out as described later and helical reinforcing bars are set into a grout bed in the joint.
To make your own raked joint tool drive a 6d box nail into a short 1x2 board so that it matches the depth of the existing joints.
This is the mortar rake.
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Let the mortar set for.
Step by step guide to repointing brickwork.
The dry laid appearance can have nice shadow lines one way to install natural stone is to dry fit the pieces together and show no grout between the pieces.
The repair is then repointed.
Mortar can be raked out or installed without pointing.
1 dry laid recessed or paper thin mortar joints.
The mortar is applied 2 to 5 mm deeper than the visible surface of the facade.
The raked profile can be left as roughened texture but it is better to compact the surface of the mortar to improve its resistance to rain penetration.
Recessed pointing recessed joints are raked out to a consistent depth.
Effect the emphasis is laid on the horizontal aspect of the facade especially in combination with full vertical head joints or even no vertical head joints at all.
Leave the same amount of the nail sticking out of the wood as the depth of the joint.
It is not water and weather resistant as it will allow water to collect on its bottom ledge.
The raked joint is another joint not recommended for exterior use because its ledge may allow water snow ice to sit on top of the brick.
A wheeled jointer is an effective tool for this.
Due to the fact that the mortar sits back from the face of the brick there is less cover between the face of the mortar joint and the top of the brick unit where the cores exist.
This is an extra raked joint.
This joint is formed in a similar fashion as the weathered joint except that the bottom edge instead of the top edge is recessed.
To repoint mortar joints the old mortar must first be removed generally to a depth of at least 15 mm but often much deeper more on this.