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A 12×16 shed material list for a gable shed on skids comes to 121 2×4 boards (45 of them wall studs), 13 pressure-treated 2×6 joists, 6 sheets of 3/4 in plywood, 9 of OSB, 18 of T1-11 and 10 bundles of shingles, assuming 94 1/2 in walls, a 6/12 roof and 16 in spacing.
Every number on this page comes from the 3DSHEDPLANS plan generator. It models each stud, rafter and sheet of a 12×16 shed, passes 59 audit checks (studs close each wall, headers fit their openings, rafters fit the span table), then counts what to buy. That is why the counts are by stock length (how many 2×4 x 8 ft, how many 2×4 x 14 ft) instead of a board-feet total.
What this list assumes
The generator ran a 12 ft deep by 16 ft wide gable shed with the ridge along the 16 ft side. These are its settings:
- Walls: 94 1/2 in tall including the bottom plate and double top plate, so studs are cut to 90 in (7′ 6″).
- Spacing: studs, floor joists and rafters all at 16 in on center.
- Roof: 6/12 pitch, 2×4 rafters, a 2×6 ridge board, 8 in eave overhang and 4 in rake overhang.
- Floor: four pressure-treated 4×4 skids on a 4 in compacted crushed stone pad, 2×6 joists, 3/4 in tongue and groove plywood.
- Loads: the 2×4 rafters pass a span table check at 30 psf ground snow (SPF #2 at 16 in). In heavier snow country the rafters need to be deeper, so check your local permit office for your snow load.
- Openings: a 60 in wide double door in the front wall and two 36 x 36 in windows, one in each side wall.
This is a reference build, not a copy of either paid plan. Our 12×16 gable plan with a double door and the 12×16 single-door version use their own door and window sizes, so their headers, trimmers, casing and window counts differ. Use this page to plan, and the plan’s own list to shop.
Shopping list by stage: the full 12×16 shed material list
Lumber sizes are nominal. A 2×4 measures about 1 1/2 x 3 1/2 in, as the American Wood Council explains. Check the grade stamp on plywood and OSB; the APA trademark guide shows how to read it.
Floor
| Item | Qty | Used for |
|---|---|---|
| Pressure-treated 4×4 x 16 ft | 4 | Skids |
| Pressure-treated 2×6 x 16 ft | 2 | Rim joists |
| Pressure-treated 2×6 x 12 ft | 13 | Floor joists |
| 3/4 in T&G plywood, 4×8 sheet | 6 | Floor decking |
| Crushed stone 3/4 in | 3.2 cu yd | Gravel pad |
| Deck screws 2 in (or 6d ring-shank nails) | 5 lb | Decking |
Walls and roof framing
| Item | Qty | Used for |
|---|---|---|
| 2×4 x 8 ft | 92 | Wall studs, cripples, sills, rafters, fly rafters, gable studs, frieze and lookout blocks |
| 2×4 x 12 ft | 5 | Side wall plates, gable end studs |
| 2×4 x 14 ft | 18 | Trimmers, side cap plates, rafter ties, collar ties |
| 2×4 x 16 ft | 6 | Front and back wall plates and cap plates |
| 2×6 x 8 ft | 2 | Window headers |
| 2×8 x 12 ft | 1 | Door header |
| 2×6 x 18 ft | 1 | Ridge board |
| Hurricane ties, H2.5A type or equal | 26 | Rafter to plate |
| Temporary braces 2×4 x 12 ft | 8 | Wall bracing, reused later |
The three header filler strips of 1/2 in plywood are ripped from the soffit plywood offcut, so they cost nothing extra. The roof works out to about 246 sq ft, which is what the OSB, felt and shingle counts below cover.
Roof covering
| Item | Qty | Used for |
|---|---|---|
| 7/16 in OSB, 4×8 sheet | 9 | Roof sheathing |
| 15 lb felt, 400 sq ft roll | 1 | Underlayment |
| 3-tab shingles, 26 per bundle | 10 bundles | Roof, starter course and ridge cap |
| Drip edge, 10 ft | 7 | Eaves and rakes |
| Roofing nails 1 1/4 in galvanized | 8 lb | Shingles |
| Roofing cap nails 1 in | 2 lb | Felt |
| Roofing cement, 10 oz tube | 2 | Ridge and edges |
| Louvered gable vent 8 x 12 in | 2 | Gable ventilation |
| Insect screen, 2 ft x 25 ft | 1 roll | Vent holes and gaps |
Siding and trim
| Item | Qty | Used for |
|---|---|---|
| 5/8 in T1-11, 4×8 sheet | 14 | Walls |
| 5/8 in T1-11, 4×8 sheet | 2 | Gable triangles |
| 5/8 in T1-11, 4×8 sheet | 2 | Door leaves (one per leaf) |
| 1/2 in plywood, 4×8 sheet | 2 | Eave soffit, ripped |
| Z-flashing, 10 ft | 3 | Wall siding to gable siding joint |
| Drip cap, 10 ft | 1 | Over the door and window head casings |
| 1×6 x 18 ft | 2 | Eave fascia |
| 1×6 x 8 ft | 4 | Rake fascia |
| 1×4 x 16 ft | 2 | Corner trim on the eave walls |
| 1×4 x 14 ft | 4 | Door casing sides, door stiles, Z braces |
| 1×4 x 12 ft | 1 | Door rails |
| 1×4 x 8 ft | 9 | Gable-wall corner trim, door head casing, window casing |
| 1×2 x 8 ft | 2 | Door stop and astragal |
| Exterior primer and paint | 3 gal | Two coats |
| Exterior caulk | 3 tubes | Trim joints |
Hardware and windows
| Item | Qty |
|---|---|
| Framing nails 3 1/2 in (16d), hot-dip galvanized | 24 lb |
| Siding nails 2 1/2 in (8d), hot-dip galvanized | 16 lb |
| Sheathing nails 2 1/2 in (8d) for OSB | 8 lb |
| Connector nails 1 1/2 in for the ties | 2 lb |
| Construction adhesive, 10 oz tube | 5 |
| T-strap door hinges | 6 |
| Door handle and latch set | 1 |
| Barrel bolts for the fixed leaf | 2 |
| Exterior screws 1 1/4 in (door frame to T1-11) | 1 lb |
| Exterior screws 2 1/2 in (hinge straps into framing) | 1 box |
| Prefabricated window, 36 x 36 in rough opening | 2 |
| Flashing tape 4 in | 1 roll |
| Wood shims | 1 bundle |
Cut list highlights
Most of the cut list is simple: 45 wall studs at 7′ 6″, 13 floor joists at 11′ 9″ and four skids at a full 16′ 0″. The parts below have angles, overhangs or stacked sizes, and each one is cut several times, so one layout error repeats. Treat the lengths as the model’s numbers and check them against your own layout before cutting in bulk.
| Part | Lumber | Cut length | Qty |
|---|---|---|---|
| Rafter (long point to long point) | 2×4 | 7′ 6 3/8″ | 26 |
| Fly rafter (rake) | 2×4 | 7′ 6 3/8″ | 4 |
| Ridge board | 2×6 | 16′ 8″ | 1 |
| Rafter tie (at the plates) | 2×4 | 12′ 0″ | 11 |
| Collar tie | 2×4 | 4′ 4 1/2″ | 6 |
| Door header (2×8 doubled + 1/2 ply) | 2×8 | 5′ 3″ | 2 |
| Door trimmer | 2×4 | 6′ 4 1/2″ | 2 |
| Window header (2×6 doubled + 1/2 ply) | 2×6 | 3′ 3″ | 4 |
| Window trimmer | 2×4 | 6′ 1″ | 4 |
| Center gable stud (under the ridge) | 2×4 | 2′ 8 3/4″ | 2 |
| Gable end studs | 2×4 | 7 1/8″, 1′ 3 1/8″, 1′ 11 1/8″, 2′ 7 1/8″ | 4 each |
Rafters. The 7′ 6 3/8″ length runs long point to long point on the top edge, from the ridge face plumb cut to the tail, and includes the 8 in eave overhang. Plumb cuts are at 26.6 degrees (6/12). The birdsmouth seat is 2 1/2 in, which keeps the notch to about 1 1/8 in deep, under a third of the 2×4’s depth. Cut one pattern rafter, test it on both walls, then trace the rest.
Ridge. The ridge runs 16′ 8″ because it carries past both walls to the fly rafters that form the 4 in rake overhang.
Headers. The 60 in door opening gets a doubled 2×8 header with a 1/2 in plywood filler, sitting on trimmers cut to 6′ 4 1/2″. The windows get doubled 2×6 headers on 6′ 1″ trimmers. A 6 1/4″ cripple fills the gap above the door header and an 11 1/2″ cripple fills it above each window.
Gable studs. They step up 8 in at a time on a 6/12 roof with 16 in spacing, from 7 1/8″ at the corner to 2′ 7 1/8″ beside the center stud. Measure each one off your actual end rafter before cutting, since a small difference in the ridge height shows up here first.
Gable vs lean-to: what changes
We ran the same 12×16 footprint as a lean-to (single-slope) roof at 3/12, with an 80 in low back wall. The floor comes out identical; the walls and roof change a lot.
| Item | Gable (6/12) | Lean-to (3/12) |
|---|---|---|
| Rafters | 26 2×4 at 7′ 6 3/8″ + 4 fly | 13 2×6 at 13′ 10 1/4″ + 2 fly |
| Ridge board | 2×6, cut 16′ 8″ | None |
| Wall studs | 7′ 6″ on all four walls | 9′ 2 5/8″ front, 6′ 3 1/2″ back, stepped on the sides |
| 2×4 boards bought | 121 | 55 |
| 2×6 boards bought (not treated) | 3 | 19 |
| T1-11 sheets | 18, all 4×8 | 16: six 4×10, two 4×9, eight 4×8 |
| Roof OSB sheets | 9 | 9 |
| Shingle bundles | 10 | 9 |
| Felt rolls | 1 | 2 (double layer below 4/12) |
| Studs by stock length | 2×4 x 8 ft | 2×4 x 8, 10 and 14 ft, 18 ft cap plates |
| Fascia | 1×6 | 1×8 |
| Extra hardware | 2 gable vents | 4 twist straps at the wall corners |
| Windows | 2 | 1 |
| Floor (skids, joists, decking) | 4, 13, 6 sheets | 4, 13, 6 sheets |
The lean-to roof is simpler to frame: no ridge, no gable triangles, 13 rafters instead of 26. In exchange it needs 14 ft 2×6 stock, a front wall about 9 1/2 ft tall with 4×10 siding, and less headroom at the back.
At 3/12, read the minimum slope on the shingle wrapper before you buy. The 2×6 lean-to rafters are also close to their span limit at 30 psf ground snow, so in heavier snow they need to go deeper; check your local permit office for your snow load. See our 12×18 lean-to plan or the lean-to shed plans page for single-slope layouts.
Where the waste goes
Buying by stock length means every cut leaves an offcut. The generator picks the stock length that wastes least for each part, so you know in advance where the scraps come from.
- Studs: 90 in from a 96 in board leaves about 6 in each.
- Rafters: 7′ 6 3/8″ from an 8 ft 2×4 leaves about 5 5/8 in each. The 20 lookout blocks at 2 1/2″ come from these.
- Floor joists: 11′ 9″ from a 12 ft board leaves 3 in for squaring the ends.
- Rafter ties and side cap plates: these 12′ 0″ pieces come from 14 ft boards, leaving just under 2 ft each. Cut the eight brace stakes from these offcuts; a stake an inch short of 24 in works fine.
- Wall plates: the front and back plates use the full 16 ft, so pick straight boards with square factory ends.
- Soffit plywood: the offcut gives you the three header filler strips.
The 18 ft ridge and eave fascia boards are the only lengths over 16 ft. If your yard does not stock 18 ft, splice the ridge over a rafter pair and join the fascia over a rafter tail.
Common mistakes
- Counting sheets by area. The roof is about 246 sq ft, which looks like 8 sheets of OSB. The layout needs 9, because each slope is cut from full sheets that do not divide evenly into it and every end joint has to land on a rafter center.
- Forgetting the door sheets. The piece cut out of the front wall is 76 1/2 in tall, shorter than a 77 1/4 in door leaf, so each leaf needs its own new T1-11 sheet.
- Skipping rafter ties. A ridge board is not a beam. The 11 rafter ties at the plates stop the walls from spreading, and the 6 collar ties sit in the upper third.
- Deep birdsmouths. A seat cut for full 3 1/2 in bearing notches too deep into a 2×4 rafter. Keep the seat at 2 1/2 in.
- Treated lumber in the wrong spots. Skids, rims and joists are pressure treated. Use ground-contact rated wood for the skids, and hot-dip galvanized nails with treated lumber. The USDA Wood Handbook covers why wet, untreated wood decays.
Tie-downs, setbacks and whether you need a permit for a 192 sq ft shed vary by town, so check your local permit office before you order. For how to read any list like this one, see our shed material list guide, and for the base under the skids, shed foundation options.
Get the full plan
The 12×16 gable shed plan with a double door has a 78 in wide double door for mowers and carts, and one window. The 12×16 gable plan with a single door has a 36 in single door for tools and storage. Both 3DSHEDPLANS PDFs include 3D drawings, cut details and their own printable material list.
Want to see the format first? Download the free preview PDF for the double-door 12×16 or the single-door 12×16. Need more or less room? Compare the 12×12 gable plan, the 12×20 gable plan and all gable shed plans, or browse every size on the shed plans page.
Frequently asked questions
How much material do I need for a 12×16 shed?
For a 12×16 gable shed on skids with 94 1/2 in walls and a 6/12 roof, our generator lists 121 2×4 framing boards, 13 pressure-treated 2×6 joists, 6 sheets of 3/4 in plywood, 9 sheets of OSB, 18 sheets of T1-11 and 10 bundles of shingles.
How many sheets of T1-11 does a 12×16 shed need?
18 sheets of 4×8 T1-11 for the gable version: 14 for the four walls, 2 for the two gable triangles and 2 for the door leaves, because the piece cut out of the wall is too short to make a leaf.
How many bundles of shingles for a 12×16 shed roof?
10 bundles of 3-tab shingles for a 12×16 gable roof at 6/12 with 8 in eave and 4 in rake overhangs. That covers about 246 sq ft of roof plus waste, and includes the starter course and ridge cap.
Are there free 12×16 shed plans with a material list?
Yes. 3DSHEDPLANS offers a free preview PDF for both 12×16 gable plans, and this page lists the full generator shopping list and key cut lengths. Each paid plan adds step-by-step drawings and its own material list.