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Framed, sheathed, roofed. The biggest build in the catalog and the one most likely to need a permit.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Skids | 3 | 3 1/2" × 3 1/2" × 120" | PT Lumber | ☐ |
| Floor joists 16" on center inside the rim joists. | 8 | 1 1/2" × 5 1/2" × 93" | PT Lumber | ☐ |
| Floor rim joists | 2 | 1 1/2" × 5 1/2" × 120" | PT Lumber | ☐ |
| Wall studs 16" on center. 89" gives an 8-ft wall with plates. | 32 | 1 1/2" × 3 1/2" × 89" | SPF | ☐ |
| Wall plates Double top plate, single bottom plate, lapped at the corners. | 10 | 1 1/2" × 3 1/2" × 120" | SPF | ☐ |
| Rafters Gable roof, ~6/12 pitch. Birdsmouth cut where they land on the top plate. | 12 | 1 1/2" × 5 1/2" × 66" | SPF | ☐ |
| Ridge board | 1 | 1 1/2" × 7 1/4" × 120" | SPF | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| Pressure-treated 4x4, 8 ft (skids) PT is correct here — it's in contact with the ground and nobody is eating off it. | 3 each | ☐ |
| Pressure-treated 2x6, 10 ft (floor joists) | 8 each | ☐ |
| Plywood, 3/4" T&G, 4x8 (floor) | 3 sheet | ☐ |
| SPF 2x4, 8 ft (wall framing) Studs 16" on center. Buy 10% extra — you will find crooked ones. | 45 each | ☐ |
| SPF 2x6, 10 ft (rafters) | 12 each | ☐ |
| Plywood/OSB, 1/2", 4x8 (wall + roof sheathing) | 11 sheet | ☐ |
| Roofing felt + asphalt shingles About 120 sq ft of roof plus waste and starter course. | 4 each | ☐ |
| Drip edge, flashing, ridge cap Skip the flashing and you will find out where the water goes. | 1 each | ☐ |
| Exterior siding (T1-11 or lap) | 7 sheet | ☐ |
| Framing screws / nails, exterior rated | 800 each | ☐ |
| Door hardware (hinges, hasp, handle) | 1 each | ☐ |
| Gravel for the pad ~2 cubic yards of crushed stone. A dead-flat, well-drained base is the whole foundation. | 2 each | ☐ |
Overall cost: $$$$$. Lumber varies by region, species, and season, so we give a band rather than a figure.
Call your local building department. Ask: do I need a permit for an 80 sq ft accessory structure, and what are the setbacks from my property line?
This phone call takes ten minutes. Skipping it can cost you the entire shed. It is the single highest-leverage step in this plan.
Tools: Post Hole Digger, Tape Measure. Materials: Pressure-treated 4x4, 8 ft (skids), Gravel for the pad
Excavate ~4", lay landscape fabric, fill with 3–4" of crushed gravel, and compact and level it obsessively.
Set the three PT 4x4 skids on the gravel, running the 10-ft direction. Level them to each other in both directions.
Everything above is only as square and level as this. There is no fixing it later.
Tools: Circular Saw, Combination Square, Drill / Driver, Impact Driver. Materials: Pressure-treated 2x6, 10 ft (floor joists), Plywood, 3/4" T&G, 4x8 (floor), Framing screws / nails, exterior rated
Build the floor frame on the skids: rim joists with joists 16" on center. Check the diagonals — get it square now.
Sheathe with 3/4" T&G plywood, glued and screwed. The floor is now your work platform for everything else.
Tools: Circular Saw, Impact Driver, Miter Saw.
Build each wall lying flat on the floor deck — bottom plate, studs 16" o.c., top plate. Frame the door and window openings with proper headers.
Stand the walls, brace them, nail them together at the corners, then add the second top plate lapping the corners to tie the walls into one box.
Plumb and brace before you trust anything.
Tools: Circular Saw, Combination Square, Jigsaw, Miter Saw. Materials: SPF 2x6, 10 ft (rafters), Framing screws / nails, exterior rated
Make one rafter, with its birdsmouth and plumb cut, and test-fit it on both ends of the building. Only when it's perfect do you use it as a template for the other eleven.
Set the ridge board, hang the rafters in opposing pairs. This is the two-person part — don't try it alone.
Tools: Circular Saw, Impact Driver. Materials: Plywood/OSB, 1/2", 4x8 (wall + roof sheathing), Roofing felt + asphalt shingles, Drip edge, flashing, ridge cap
Sheathe the roof with 1/2" ply. Then, in order: drip edge, roofing felt, starter course, shingles working up from the eave, ridge cap last.
Order matters. Each layer overlaps the one below so water always runs onto the outside of the next layer down. Get the order wrong and you've built a funnel into your shed.
Tools: Circular Saw, Drill / Driver, Jigsaw. Materials: Exterior siding (T1-11 or lap), Door hardware (hinges, hasp, handle)
Sheathe and side the walls. Cut the door opening, build a simple frame-and-panel door from leftover framing and siding, hang it on exterior hinges.
Trim the corners and around the door — trim is what makes the difference between 'a shed' and 'a nice shed', and it's also what keeps water out of the seams.
Caulk every seam water could sit in. Prime and paint, or stain.
Then walk around it in the next hard rain and look for drips. Fix them immediately — a shed leak found in year one is caulk; found in year five it's rot.