your cheapest solution is to use T1-11 siding board.

来源: 于 2025-06-10 12:36:07 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

which is considered proper exterior material by building code. 

For longevity use a piece of 1x6 at the bottom that can be easily replaced.