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

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originalwaggy
Labourer
Labourer
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Joined: Wed Aug 29, 2007 6:46 pm

crumbling exterior brickwork

by originalwaggy » Wed Aug 29, 2007 6:52 pm

I have a single skin brick porch and the brickwork is crubling below the damp proof membrane. It looks like the previous owner has tried, badly, to render this with a poor cement mix. I too would like to render this, but properly. What is the correct mix and what is the best way to stabilise the brickwork before applying it? :?

canny
Tradesman
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Joined: Sat Nov 03, 2007 10:09 pm

by canny » Sat Nov 03, 2007 10:31 pm

Apply a water proofer onto the brickwork,like bitumin, give it 3 0r 4 coats then on the last coat throw sand onto it to give a hold for the render.
Mix 1 part cement , 1 part lime, and 5 parts sharp sand,apply first scatch coat then leave over night , then apply same mix of render as a top coat and float up .
If you use lime add a waterproofer to the mix, if you use a plasticiser DO NOT mix with a water proofer

TheDoctor5
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by TheDoctor5 » Thu Jan 22, 2009 10:26 am

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