Deck Replacement: Step-by-Step DIY Guide

Materials & Tools

• Deck boards (match existing species, dimension, profile)
• Joists (if replacing; same size/grade)
• Fasteners: Deck screws (coated) or ring-shank nails
• Tools: Pry bar, drill/driver, circular saw, tape measure, level, carpenter's pencil, safety gear
• Sealant/stain (penetrating oil-based or water-based)

Procedure

1. Remove Old Decking: Pry up boards carefully to preserve joists. Remove all fasteners.
2. Inspect Joists: Check for rot, insect damage, cracking. Probe with awl. Replace any compromised joists (sister or full replace).
3. Install New Joists (if needed): Same spacing (typically 16" OC). Attach to beams/posts with structural screws.
4. Lay New Decking: Start at one end. Maintain ⅛" gap for drainage. Use spacer. Fasten each board to every joist (2 screws/nails per joist). Stagger butt joints.
5. Trim Ends: Cut to fit walls, posts, stairs. Use chalk line for straight edge.
6. Seal/Stain: Clean surface; apply per manufacturer instructions. Recoat every 1–3 years.

Pro Tips

• Match original board type/size for uniform appearance.
• Ensure joists are level before decking.
• Use corrosion-resistant fasteners (ACQ-compatible for treated lumber).
• Seal end grain to reduce splitting.