I used 3/8" rated sheathing from lowes instead T111. I thought I ordered T111, but 3/8" sheathing. I was over budget, so I used it on my exterior walls. I had planned to prime and paint it for weather protection. I was needing opinions from more knowledgeable carpenters. I was really proud of my job until my buddy piped up and said I screwed up. I would appreciate any opinions negative or positive. I had planned to vinyl side in the spring.