air brick not fitting


Postby ctsoc1 » Sat May 03, 2008 5:48 pm

Have successfully made holes for plastic air vent bricks but as they do not match the depth of the brickwork, do I push them to fit flush with the outside wall, presumably this will make the job weather-proof, but also leaves the inner wall with a very recessed air brick.
I've just made it up as I went along and dont know why the plastic brick clips together in two pieces. Could this be the clue to my problem?
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Postby ALDA » Sun May 04, 2008 1:31 pm

THE BRICKWORK HAS TO BE REMOVED THROUGH BOTH OUTER AND INNER SKINS.
THE AIR BRICK NEEDS TO BE POSITIONED FLUSH WITH THE EXTERNAL WALL FACE AND THE LINER/DUCT NEEDS TO BE ATTATCHED TO THE BACK OF THE AIRBRICK AND PROTRUDE THROUGH CAVITY AND INTERNAL WALL TO VENTILATE THE SPACE BEHIND.
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