How to fix blushing in polyurethane?

[Chris Atzinger]

Hi,

I have a set of tree stump slabs that I am trying to finish, and I ended up with blushing in the polyurethane. You can see the dull patches near the center. Is there anyway to fix this without resanding?

I this pic shows about 6 coats of minwax wipe on poly.

Thanks!
Chris

[John TenEyck]

I don't see a picture. Were the slabs really dry? I'll bet not. If that's the case, the blushing isn't going to be resolved until they are dry to less than maybe 12% moisture

John

[Rob Young]

Also no pics.

Fix the blush in poly, probably not without sanding back and letting the slabs dry fully.

If it was lacquer or shellac, easy fix.

[Wayne Lomman]

Yes it's caused by humidity, either in the timber or else very high air humidity. If it's the timber, sand it off and let it dry properly or else use a non film finish. If it was bad weather, sand it back and do it when the humidity is around 60%. Cheers