Substructure and Subfloor Preparation
At 0:00 in
This was such an epic build!!
What happens here
The video commences with a pre-existing, large plywood subfloor already in place, resting upon a robust substructure (which typically includes concrete footings, structural posts, support beams, and floor joists). For a DIY project, this initial and most critical phase would involve extensive site preparation, acquiring permits, digging and pouring concrete footings, installing pressure-treated lumber for posts, beams, and joists according to local building codes, ensuring everything is level and square, and finally attaching exterior-grade plywood sheathing securely to create a solid, stable, and level base for the decking material. This foundational work is crucial for the safety and longevity of the entire deck structure.
Goal: Create a stable and level structural base for the decking.
Tools and materials
- Circular Saw — Cutting lumber and plywood to size for the substructure
- Concrete N/A — Forming footings for structural support of the deck
- Cordless Drill/Driver — Driving various fasteners for assembling the substructure
- Fasteners — Securing all structural components together
- Level — Ensuring all structural components are plumb and level
- Plywood Sheathing N/A — Creating a solid, continuous surface over the joists for the decking to rest upon
- Pressure-Treated Lumber — Constructing the primary structural framework of the deck
- Tape Measure — Accurate measurement of all materials