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An open-sided lean-to shed built from 2x3 construction lumber and a single sheet of plywood roof — mirror-image side frames keep the roofline consistent.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Side spacers | 8 | 1 1/2" × 2 1/2" × 24" | 2x3 | ☐ |
| Long side sticks Cut edge at 22.5° angle. | 2 | 1 1/2" × 2 1/2" × 84" | 2x3 | ☐ |
| Short side sticks Cut edge at 22.5° angle. | 2 | 1 1/2" × 2 1/2" × 72" | 2x3 | ☐ |
| Face and stacking rails | 9 | 1 1/2" × 2 1/2" × 96" | 2x3 | ☐ |
| Roof ridge pieces Approximate — scribe and cut the angle to fit against the assembled side frames. | 2 | 1 1/2" × 2 1/2" × 30" | 2x3 | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| 2x3 board, 8 ft, construction grade (Pine/fir) | 16 each | ☐ |
| Roofing plywood, 1/2", 4x8 sheet | 1 each | ☐ |
| Cinder blocks or sturdy pavers | 4 each | ☐ |
| Exterior deck screws, 3" | 80 each | ☐ |
| Tar paper | 1 roll | ☐ |
| Shingles | 1 bundle | ☐ |
| Deck stain | 1 quart | ☐ |
Overall cost: $$$. Lumber varies by region, species, and season, so we give a band rather than a figure.