Materials for a 8×8 deck
20 deck boards (8 ft)
for 64 sq ft: 18 rows of 5½ in boards with a ⅛ in gap, on 7 joists, with 10% extra.
For a 8×8 foot deck, the boards run along the 8 ft side and the joists span the 8 ft side.
Materials for a 8×8 deck
| Deck area | 64 sq ft |
|---|---|
| Deck boards (5½ in × 8 ft) | 20 |
| Linear feet of decking | 144 ft (+10% = 158 ft) |
| Joists at 16 in on center | 7 × 8 ft |
| Joists at 12 in on center | 9 × 8 ft |
| Rim joists | 2 × 8 ft |
| Deck screws | about 252 |
Framing sizes (joist depth, beams, posts and footings) depend on spans and local code; check your building department’s deck guide before you build.
Change the numbers
Other deck sizes
- 8×10 deck
- 8×12 deck
- 8×14 deck
- 8×16 deck
- 8×18 deck
- 8×20 deck
- 8×24 deck
- 10×10 deck
- 10×12 deck
- 10×14 deck
- 12×12 deck
- 10×16 deck
Questions
- How many deck boards do I need for a 8×8 deck?
- 20 boards 8 ft long (5½ in wide), laid in 18 rows, including 10% extra.
- How many joists for a 8×8 deck?
- 7 joists 8 ft long at 16 in on center, or 9 at 12 in on center.
- How many screws for a 8×8 deck?
- About 252 deck screws: two per board at each joist. A 5 lb box holds roughly 350 to 450 screws.
- How much does a 8×8 deck cost?
- Decking boards alone run about $253 in pressure-treated pine or $634 in composite. A finished 64 sq ft deck built by a contractor typically costs $1,920 to $3,840.