How do I remove this discoloration?
by
Cindy Rubin
+6
First time using chalk paint. I followed all directions carefully refurbishing this 40+ year old end table with chalk paint. Following the directions and timing guidelines I then applied Valspar Sealing Wax For Chalky Finish Projects. Now a few weeks later I am starting to see a yellowish staining appear... but only in corners and edges. The flat surfaces look fine.
Why? What is it? AND oh my goodness, please don't tell me the only 'FIX' is to start over 
.
Do you have a picture of the tables painted? If you painted them white, some sealing wax does yellow. What chalk paint did you use?
Not sure but the picture is confusing me. The picture looks like a table that was stained and not one done with chalk paint.
Did you prime the piece using a stain blocking primer like Zinseer Bullseye, cause stain has a way of bleeding through.
The only way to cover that up would be to lightly sand and stain with a darker stain then varnish
Cindy: I agree with Sharon -- prime with a stain blocker!
I use olive oil to get rid of stain or discoloration of the furniture.
Looks like the old stain or tannins in the wood are bleeding thru. It even looks like the paint is alligatoring/cracking. You may need to lightly sand the finish. Prime with Kilz primer then paint.
I would re-sand it and touch up with paint a bit
I agree with William, it's likely the old stain, old sealer, or something in the wood that's seeping through. Chalk paint is not a miracle in a can. You'll likely need to sand it off and start over.