I was wrestling with how to best finish my garage for a few years and finally got inspired to do it this fall. I didnt want to tape and text the walls for lack of durability and was also trying to do it on a budget. So I found that quite a few people have used corrugated galvanized metal panels to cover the walls to a chair rail or sorts. I decided to take that a step further. Heres what i did.. Taped and textured the ceiling flat joints only, no inside or outside corners. Bought 800 sqft of 2.5 corrugated 29 ga panels and a bunch of 1x3 and 1x2 cedar strips. I put the 1x3 cedar on the bottom and butted the panels into the strip. I ran the panels to the ceiling within a half inch then covered that with the 1x2 cedar strip. The panels were installed over insulated and sheetrocked walls. So I had to mark out the studs when installing the bottom trim then i had a target for my screws. It turned out ok. Im thinking of burying a red or other colored rope light in the trim for evening parties and extra light effect.