Ok, so, you sanded, cleaned, and primed your boards. Now you’re ready to apply your paint or stain. The best,..               

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way to go about this is to get a paint roller, and liberally apply the paint to your boards. Don’t use too much at a time though! You don’t want to waste the paint you paid for by spilling it all between your boards. Use a painting tray to remove excess paint from your roller. Once you go over the boards with a roller, grab a paint brush and get in the nooks and crannies, and paint in between the boards to spread the paint all over. Again, if possible, paint on all sides of the boards. It will extend the life of your paint job. Once you do two coats, you should now have a brand new deck!