What to "paint" 1/2" OSB with for exterior use?

   / What to "paint" 1/2" OSB with for exterior use? #11  
Once that paint cracks or you get a chip of OSB coming off it's all over with.

For cheap paint I would just use what ever you can find on marketplace. And or ask friends for there old paint. Every new or old home owner has the previous people paint left behind.
 
   / What to "paint" 1/2" OSB with for exterior use? #12  
Nothing to say on the paint, but make sure the tops of the boxes overhang the sides. That way the rain will not off unto the sides as easily, just like the overhang on a house. Jon
 
   / What to "paint" 1/2" OSB with for exterior use? #13  
OSB is not made to be left outdoors exposed to weather. Weather its painted or not.
OSB isn’t made to be exposed to weather but I used unpainted OSB on some barn windows about 10 years ago and other than changing color it has been holding up very well.
 
   / What to "paint" 1/2" OSB with for exterior use? #14  
I have used several different 'untreated' woods outside, including OSB. The trick is to use oil based and thin it down no more than 50/50 and put a couple of good coats on so it soaks in, like a stain. Then do the normal top coats. You can prime with a good latex primer after the thinned coats and top coat with latex, if you want, or just use a good oil top coat.
 

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