> I just got a good deal on some OSB (oriented strand board) and was > wondering if anyone has any experience in using it for hive > applications. Well, it comes in thicknesses up to an inch and you don't say which you have. I have seen 3/8 inch used successfully under tin for lids, and have tried it myself, however I don't care for it and it will not stand up if it has water set on it - say when lids blow off or are left out. It flakes off over time and is not too good if you will have to scrape it. My recommendation: sell it or trade it for proven materials, or build a shed with it. In vertical sides, well painted, or for roof under shingles, it is in its intended application and will last well.