Brickwork faults
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The picture above is of brickwork that has been effected by salt attack, this has been caused by the damp course failing and letting salt laden moisture travel out of the ground and up into the brickwork.
The salt can be seen as the white powder at the base of the brickwork.
To remedy the problem a new damp course has to be put in, either a physical barrier type or a chemical one.
The physical barrier requires the removal of some bricks in a sequence, say 5 at a time, a damp course is put in then the bricks replaced.
See the picture for more info.
Remove the bricks that are highlighted.
Once the replaced bricks have set, another
sequence is done next to the last lot.
Multiple sequences can be done at one time say 5 bricks,
leave 5 bricks then another sequence of 5 bricks etc. etc.
A chemical damp course is inserted via holes drilled into the bricks, this method is much easier to do
as all you need is a hammer drill, some masonary bits, and the chemicals.
The chemicals come as a kit with full instructions.
The cost for both methods is roughly the same.
The physical barrier method is very labour intensive, but the material prices are low.
The chemical method saves time in labour costs but the chemicals are expensive.
I prefer the chemical method myself, I have used this product in the past with good results.
Once the dampcourse has been fixed, the wall in the picture is in need of repointing and a few need bricks replacing.
Also see, Dampcourse.
The salt can be seen as the white powder at the base of the brickwork.
To remedy the problem a new damp course has to be put in, either a physical barrier type or a chemical one.
The physical barrier requires the removal of some bricks in a sequence, say 5 at a time, a damp course is put in then the bricks replaced.
See the picture for more info.
Remove the bricks that are highlighted.
Once the replaced bricks have set, another
sequence is done next to the last lot.
Multiple sequences can be done at one time say 5 bricks,
leave 5 bricks then another sequence of 5 bricks etc. etc.
A chemical damp course is inserted via holes drilled into the bricks, this method is much easier to do
as all you need is a hammer drill, some masonary bits, and the chemicals.
The chemicals come as a kit with full instructions.
The cost for both methods is roughly the same.
The physical barrier method is very labour intensive, but the material prices are low.
The chemical method saves time in labour costs but the chemicals are expensive.
I prefer the chemical method myself, I have used this product in the past with good results.
Once the dampcourse has been fixed, the wall in the picture is in need of repointing and a few need bricks replacing.
Also see, Dampcourse.
Failed dampcourse
Brickwork.net.au
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The water damaged brick work was the result of a leaky down spout that was left unfixed, the brick from yesteryear were far softer that todays bricks.
The brick underneath the eroded ones have been rendered.
The bad cement wash repair was someones attempt at repairing soft or eroded brickwork, the good thing is that the cement wash has preserved the brickwork so proper restoration can be done at a later date.
The brick underneath the eroded ones have been rendered.
The bad cement wash repair was someones attempt at repairing soft or eroded brickwork, the good thing is that the cement wash has preserved the brickwork so proper restoration can be done at a later date.
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Stack Bond is when you have two bricks laid on top of each other with no bonding, its is bad practice to lay stack bond, a brick or two laid stack bond would be fine if it isnt going to be seen. (the arch is to be rendered).
The exception is when building piers that are single skin, single brick.
The exception is when building piers that are single skin, single brick.
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Failed Arch.
The arch seem to have failed due to the pipe the comes out of the wall just above it, there must have been a damp problem because a newer vent has been inserted into the wall probably to get rid of the dampness.
Someone has attempted to fix the arch, but they bogged up the top rather than inserting wedges from the bottom of the arch.
There are no water stains on the wall which is a bit odd.
The arch seem to have failed due to the pipe the comes out of the wall just above it, there must have been a damp problem because a newer vent has been inserted into the wall probably to get rid of the dampness.
Someone has attempted to fix the arch, but they bogged up the top rather than inserting wedges from the bottom of the arch.
There are no water stains on the wall which is a bit odd.
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Acid washing
Apprentices
Arch Building
Basic Tool Kit.
Bits and Pieces
Bricks
Brickwork Bonds
Brickwork Cracks
Brickwork Faults
Brick Piers
Buttering
Cavity Flashing
Chimneys
Concrete
Contractors
Cutting Bricks
Dampcourse
Fancy Brickwork
Finishing
Footings
Glossary
Health
Laying
Mortar
Older Methods
Pictures
Pizza Oven
Plans
Plumb-level
References
Replacing a brick
Repointing
Retaining Wall
Safety
Setting out
Spreading the bed
Stone Work
Tables
Trowel of Mortar
Wall Ties
Ventilation
GuestBook
Forum