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Just had an exterior wall rendered with 4-1-1 scratchcoat with waterproofer and 5-1-1 topcoat one day on and i`ve noticed some small hairline cracks and some other very slight spider webb type cracking. Any suggestions on the possible cause and remedy please.:-0

:RpS_scared:I have started to render an exterior wall and used a normal unibond to prime the wall before applying the the scratcoat 4-1 with an addmixture of waterproofer, I have been told that because the unibond is not a waterproof type that it could lead to problems with integrity of the...

planning on rendering exterior wall with sand/cement/ hydrated lime 4-1-1 scratchcoat and 5-1-1 top coat, wondering if it is usual practice to include a waterproofer additive in one or both coats. appreciate any advise. :confused:

Does anyone have any advise on the use of snowcrete,I plan to use snowcrete white cement with lime as a top coat with ordinary portland cement as the scratch coat to get a lighter natural shade(cream or similar) scratchcoat 4-1-1 and top coat 5-1-1 with waterproofer in both coats. the only sand...

Hi there, I am new to the forum and would like some advise on the best prodedure for rendering a an external wall whick has mostly dense bricks.I have keyed up the bricks with a grinder to form criss cross all over as I was told they might be too smooth a surface. when getting estimates for the...