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February 28 - March 6, 2011

Do you need to wait for the mortar to cure before repainting a brick surface after repointing and power-tool cleaning to remove loosely adhered coating material from a previous paint job? If so, how long, and is there a way to judge when it is safe?

Selected Answers

From Ron Cros of A Classic Painting on March 7, 2011:
When you are pointing up brick mortar seams the thickness is usually 1/4" to 1/2", at least that is my experience. A couple of nice warm days with no moisture or rain should be enough to dry the mortar seams and allow for primer and paint. The thicker the patch compound the longer the drytime.

From Robert Cox of Cox & Associates on March 4, 2011:
Assuming pointing is Portland Cement product based, then 28 days for curing and chemical reaction of limes, water, etc., should have occured. This all depends on weather and temps. Robert Cox

From tim hady of tjhady painting on February 28, 2011:
Depends on the primer used. Depends on the material used. Some primers and paints have been designed to be used on green concrete.

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