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 made half a dozen plaster patches within my home remodeling, each about 30-40 sq ft. The plaster goes over brick, so not lath. It was a hell of a job but still simpler than framing walls and hanging drywall.

I used the old-fashioned plaster recipe: for the inner two coats (it needed that many coats to be flush with the old plaster bordering it because the old plaster is 3/4" thick) I used 2.5x masonry sand and 1x hydraulic lime (by a company called Virginia Lime Works). For the finish coat I used 1.5x really fine sand (by Quickrete) and 1x the same hydraulic lime.

In preparation for painting, I was told that before applying primer, the presence of lime in the plaster required neutralizing. I am not sure about this so I am asking to confirm. In addition, are there better solutions to neutralizing than vinegar?

share|improve this question

1 Answer 1

This thread at Contractor Talk regarding priming/painting new lime plaster has multiple good tips:

Wait 2-3 mos (until plaster is fully white), neutralize (vinegar in water was mentioned) and prime with an alkyd primer.

share|improve this answer

Your Answer

 
discard

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.