air brick not fitting All manner of questions and solutions to problems and issues surrounding the subject of brickwork, blockwork and stonework

[ctsoc1]

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?

[ALDA]

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.

[TheDoctor5]

Last year 64% of the questions asked in our forum were answered within our DIY project pages at www.diydoctor.org.uk/projects.htm The project pages are now separated alphabetically and your answers are accompanied by diagrams and the ability to see, and buy, the tools and/or required to complete your project. Use our search box to look for your answer and save a great deal of time and money!