Ventilation
Ventilation usually only applies to a building that has a floor that is of timber construction.
Buildings on a concrete slab dont suffer from the same dampness problems that buildings on footings do.
Buildings on a concrete slab dont suffer from the same dampness problems that buildings on footings do.
Ventilation of the subfloor is achieved by setting vents into the exterior brickwork.
The vent must go through the whole thickness of the brickwork.
Ventilation to a sub floor is vitally important to eliminate dampness and smells.
This is archived by laying vents in the brickwork at or near ground level, but above any paving.
You may find some of the older buildings are set so low to the ground that putting in vents is almost impossible.
There are electric fans on the market that are made for this job.
When the vents are inadequate or non existent the building will smell musty or mouldy.
If the building has inadequate subfloor vents in the brickwork, then vents must be put in.
This is achieved by taking out some bricks and replacing them with vents.
See replacing a brick as to the method used, just put in a vent rather than a brick.
Vents can be made of.
Cast Iron, Older buildings.
Clay, in the form of 1 brick or 2 in either height or length. Older buildings.
Pressed galvanised metal. Modern buildings.
Perps clear of mortar, 1970 to 1980'ish
Vents are sometimes put into walls higher up if there is a dampness problem in the wall itself, the increased air flow created by the vents usually removes the moisture.
The old clay 2 brick high air vent wouldnt have done much for ventilation, as most of it is clay.
The vent must go through the whole thickness of the brickwork.
Ventilation to a sub floor is vitally important to eliminate dampness and smells.
This is archived by laying vents in the brickwork at or near ground level, but above any paving.
You may find some of the older buildings are set so low to the ground that putting in vents is almost impossible.
There are electric fans on the market that are made for this job.
When the vents are inadequate or non existent the building will smell musty or mouldy.
If the building has inadequate subfloor vents in the brickwork, then vents must be put in.
This is achieved by taking out some bricks and replacing them with vents.
See replacing a brick as to the method used, just put in a vent rather than a brick.
Vents can be made of.
Cast Iron, Older buildings.
Clay, in the form of 1 brick or 2 in either height or length. Older buildings.
Pressed galvanised metal. Modern buildings.
Perps clear of mortar, 1970 to 1980'ish
Vents are sometimes put into walls higher up if there is a dampness problem in the wall itself, the increased air flow created by the vents usually removes the moisture.
The old clay 2 brick high air vent wouldnt have done much for ventilation, as most of it is clay.
Brickwork.net.au
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I worked on a few houses back in the 70's and 80's, that just used perp joints that were clear of mortar as the vents.
I cant say Im a big fan of this practice, there just isnt enough clear space in the cleaned out perps to allow for proper ventilation.
It was done to save the builder a few dollars by not buying vents.
I found this recent "Perp Vent" on a job next to where I am working.
I cant say Im a big fan of this practice, there just isnt enough clear space in the cleaned out perps to allow for proper ventilation.
It was done to save the builder a few dollars by not buying vents.
I found this recent "Perp Vent" on a job next to where I am working.
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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