Q i am working on a residence that has raked mortar joints.
Raked mortar joints.
Many voids in the head joints were exposed when the mortar in this area was ground out so that the wall could be tuckpointed with a raked joint to match the rest of the house.
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.
Double the gap between adjacent brick courses.
Instead the front portion of the mortar joint is scraped out.
Controlling dust throughout this process protects the operator other persons and assets in the vicinity and.
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.
Raked joints are similar to flush joints but rather than aligning perfectly with the brick they sit back about 2mm.
Think of the shape of this joint as being a flush joint that is raked back below the level of the surrounding masonry.
It is also important to retain a constant raked depth.
Raking the mortar out can open up voids in the head and bed joints that increase water penetration.
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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.
Mortar is recessed approximately 1 2 inch from the face of stone.
Because of a change in the design the first area was built with concave joints.
This is an extra raked joint.
Mortar can be raked out or installed without pointing.
Modern masonry joints often bring the mortar flush with the.
Older brick and mortar walls commonly had raked joints which are flat mortar joints slightly recessed from the front edge of the brick.
In raked joints the mortar is not compact against the surfaces of the joint.
For repointing purposes mortar joints should be raked out to a minimum depth equal to twice the height of the joint i e.
Struck weathered joints.
It has lower resistance to weathering than the other common joints so it is used when historical accuracy is important.
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.
The raked mortar joint is also a joint used mostly in historical restorations.