1.Foundation: Block or poured concrete foundation on concrete footings

2.Floor: Poured concrete slab in basement, otherwise wood framed assembly (min. 2x6") covered with plywood panels or tongue & groove wood boards (older homes)

3.Walls: Wood framed assembly (min. 2x4") covered with wood sheathing

Roof: Wood framed or truss assembly covered with wood boards or sheathing