Ridgeback825
Songster
I would just seal any treated lumber on all side as the are treated with bad chemicals to prevent wood destroying microbes and bugs.Luckily my soil is firm and no sagging or too much rain since I’m in Southern California. I will look into the wood destroying insects. And I have a shed that’s built on a cement slab and I’ve learned so far that cement is not the way to go. I like that idea sturdy beams. I’ll use a “nice sized treated” beam to start out.