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Posted: Wed Mar 22, 2006 3:22 pm
by nix
I have recently converted a barn and the original yard of approx. 300m2 of concrete has seen better days. There are weeds coming through cracks, hollows which become puddles and where I have laid drainage there is a patchwork finish.
To make it look good to the eye I was thinking of a surface of bitmac to finish it off.
The problem: I have only 150mm to the DPC, thus the problem of layer thickness, also, would it be possible to lay bitmac directly onto existing concrete with a membrane to stop cracking..?
Is there better ideas regarding products/cost saving?
Any advice would be greatly appreciated...

Posted: Sun Apr 02, 2006 5:35 pm
by Tony McC
You need someone to take a look at the site - there are so many "variables" that need to be taken into account when determining how to re-surface an existing yard.

In theory, you could use a 20mm overlay of bitmac, which would reduce height to DPC to just 130mm, but you'd probably get away with that. Using a cementitious scratch coat with a resin bonded surface would also be worth considering.