I currently have stained knotty spruce t&g halfway up the walls in my den. I want to paint this wood. (I’ll be using Sher will oil primer and paint.) IS THERE A GUARENTEED METHOD THAT WILL PREVENT THE KNOTS FROM BLEEDING THROUGH? Thank you for your time.
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That should do it. If yer worried give it two coats of oil primer.
Creation arises, is sustained for awhile, and then things change. That’s the dance.
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prime with thinned wood working glue...
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I've been using BIN by Zinsser: http://www.zinsser.com/product_detail.asp?ProductID=10. It works really well, but is not easy to apply to large areas because it's very thin. For knots, it's perfect. I apply it with those disposable foam brushes.
The standard approach is to spot prime the knots and defects with two applications of pigmented shellac. Bin, Parks etc. There is also a product called Kilz, works the same way. After spot priming, prime the entire surface with a high hiding primer. I just did this yesterday. I used Zinsser BIN stain killer to spot prime and Zinsser Cover Stain oil based primer. After 48 hours I'll top coat with two coats of acrylic. The necessary instructions are on the can. You can use either latex or oils. I like oil for interior, acrylic for exterior. If you are using dark colors, you may want to tint the primer.
There is no absolute guarantee. Some knots will bleed sap for years. Spruce isn't too bad but some pine is terrible. You just repeat the process the next time.
Beat it to fit / Paint it to match
Thanks Hamme!!