Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I have a finished concert pillar in my living room that I need to be patched and pained. The pillar has final gypsum and paint on top of concrete. Since the concrete is chipped off I need to use a fast set repair mortar (such as QUIKRETE® FastSet™ Repair Mortar) to repair the concrete.

But I dont know if the gypsum material can be added on top of the repair mortar or not? is there a specific product that I can add on top to prepare the surface for paint ?

share|improve this question

2 Answers 2

I would not hesitate to skim over clean dry concrete with drywall mud. As long as the concrete NEVER has a chance to get wet.

share|improve this answer

I would use a setting joint compound (maybe durabond) rather than mud because it's more durable and moisture resistant. It's more time-consuming to sand, however. Either should stick to concrete and both should get a coat of primer before painting. If have old or really glossy concrete, you can prep the surface with a little Muriatic acid to etch the surface and get a better bond, but that shouldn't be necessary for fresh-cured mortar.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.