The Stovebolt Site Forums The Shop Area Paint and Body Shop paint or stain wood under the truck?

Please refer back to my post to you some time ago on the same topic. Just staining or coloring the underside of the boards doesn't seal them. The pores of the wood are still open to the elements and as said in another post, will get wet, swell, warp, and rot. You need to seal all exposed edges and ends of the boards with varnish over the stain, or, you can paint with a good oil-based paint.