New rendering

[Dudley]

We have just had an external brick wall rendered to prevent damp coming through when it rains heavily. Can we just paint it or should we seal it with a specialist solution? We have looked at stabilisers but the can always says 'Do not used on new rendering'.

[raysparx]

Hi Dudley,

You cam paint it,but it is best to leave it for a while,so that it can weather a bit,you don't need to apply a stabilising solution to new render,leave it untill about sept or oct,it should be ok then, Ray

[Dudley]

Thanks Ray. Very helpful.

[Tatty Rollox]

Did whoever advised you to hope that cement and sand rendering will waterproof a damp wall know what they were talking about? It is a very, very tricky subject both in specification and application and prone to much disappointment

[Dudley]

I didn't put the question quite correctly Tatty. The wall isn't damp at present, it is a preventative measure. It is the external wall of an extension we had built about 15 years ago and at the time it was built there was a partly brick built conservatory next door directly adjacent to the boundary of our house. The outside wall could not therefore be finished off or pointed correctly being built from our side. The conservatory has now been demolished by the new owners and I was advised that it would be better to render the wall rather than have it properly pointed. Thanks for your advice.