How long should you wait before painting on external sand\cement render?

20 Feb.,2024

 

Hi, we've just rendered the front of our house with sand and cement, its Janurary so quite cold and the render was applied about a week ago.

A painter told us its ready for painting now as long as we paint on stabliser or solvent based primer first (which is useful as we can make use of the scaffold to paint)

However other folks have told me that external render takes anywhere between 6weeks and 3 months to dry.

I'm now unsure what to do. How long should you wait before painting on the new external render? And how do you tell if its dry all the way through? (Bear in mind its the cold months - Jan 2015). Thanks very much!

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