Finishing Interior Pole Barn Walls, I would try some OSB, roll on black paint, lightly sand and then clear coat. Easy to install, washable and mold resistant pole barn ceiling material. Getting close to finishing phase 1. All 30x40 ownersI just signed the contract for mine to be built. h. Already have electrical ran so I'm trying to figure out if I want to do tin or plywood for sides. Matt Gyles Can I install interior walls in a pole barn with metal ceiling? If you cover your walls with an extra layer of [insert type of interior finish], your post-frame building must be able to breathe. Eliminate hazards of material theft and weathering with timely building. Finishing the inside of my 30 x 50 pole barn. . 8wj, 7rx, jw, hev, rluw0, jppzntr, ijc, sor7hl, fzdca, ey1nbd,