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Postby charlotte » Thu Jan 22, 2009 5:14 pm

I am looking to buy a terraced house at an auction but the exterior side wall
has a light industrial unit attached to the property and it appears that the damp which is very mouldy and black running down the walls and affecting the first & second floors is being caused by the flashing on their roof which may have lifted. If they won't fix it can we tank the wall & will it have already damaged the brick structure in any way?
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Postby TheDoctor4 » Thu Jan 22, 2009 6:08 pm

Last year 64% of the questions asked in our forum were answered within our DIY project pages at 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!
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Postby Inform Timber and Damp » Sun Jan 25, 2009 1:46 pm

Black mould is usually related to condensation , whereas a flashing defect would normally be a leak . Any building defect should be resolved, tanking is ony a remdy where you cant get to the other side- ie a basement wall or perhaps as a temporary or belt and braces approach . i woulsd not rec it as an alternative to external maintenance,
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