How To Build A Lean-to Storage Shed Let’s begin with the materials list that you’ll need to build this shed : – Pressure treated skids (4×4) – Pressure treated floor joists (2×4) – Exterior grade plywood flooring 3/4” – Top plates, bottom plates, studs, header, trimmer studs, cripple studs, rafters, subfascia (2×4) – T1-11 exterior [...]