rendering on old red bricks


Postby josh1 » Fri Jul 27, 2007 6:43 pm

hello
any one no wat i can do to stop render going of so quick put a scratch coat on these old red bricks they sucked all the water straight out i prepared the wall with loads of unibond but didnt really seem to help.dont want the same to happen on top coat.any ideas
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Postby martin497 » Wed Aug 01, 2007 4:05 pm

Hi M8,
The usual practice is to wet the wall before rendering.
On a cold winter day you need only to splash wall with water from a large brush, but on a hot summer day you really need to wet the wall well.
I have seen plasterers, and I have also myself used a hose to wet the wall on a real hot day.
Even though the weather has been pretty crappy lately it has still been quite warm, try giving the scratch a real good damping and you should be ok.
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Postby josh1 » Wed Aug 01, 2007 9:02 pm

cheers for the advice
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