Cavity Ventilation All manner of questions and solutions to problems and issues surrounding the subject of brickwork, blockwork and stonework

[Jim A]

I've had a problem with my gable end wall - the render had blown in quite a few places, so I'm having it all stripped off and re-rendered. I have been told that the problem may well have been caused by the application of too many coats of masonry paint over the years, which effectively sealed the wall, and prevented any internal moisture from evaporating.
Would it be worthwhile installing one or more ventilation bricks at high level to help disperse any moisture that may collect in the cavity?.

[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!