6x12 Gable Storage Shed Plan

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6×12 shed plans: the numbers for a site check

The ridge runs the 12 ft length, so the eaves sit over the front and back walls and the gable triangles are on the two 6 ft side walls. The walls are full height, so this shed stands taller than its 6 ft depth suggests: if an HOA or a neighbor’s view is a concern, check the peak height first. Mark the roof footprint and the gravel pad on your lot, not just the 12 by 6 ft walls. The door swings out and the ramp reaches out from it, so the plan asks you to keep 7′ 1″ clear and level in front of the wall.

How the 6×12 shed plans go together

The steps run in build order: layout and pad, skids, floor frame, decking, back, front, left and right walls, joining the walls, the door, the pattern rafter, ridge, rafters and gable ends, roof sheathing, gable siding, fascia and soffit, drip edge and felt, shingles, anchoring the shed, trim and windows and the ramp. A build checklist at the back has a “date done” and “checked by” column for each stage.

6×12 gable vs 8×12 gable vs 6×10 lean-to

All three have a front double door and a wheel-in ramp. They differ in door width, room depth and roof.

Pick the 6×12 gable for a long, shallow tool and garden shed with full head room and everything in reach from the door. Pick the 8×12 if a riding mower has to go in. Pick the 6×10 lean-to if you want a lower roof line with one slope.

Site layout and gravel pad

Stake the corners 12′ 0″ along the front and 6′ 0″ along the sides, then move one stake until both diagonals read 13′ 5″. Dig 4″ deep over a 14′ 11″ x 8′ 11″ area, the outside of the pad frame, and on out in front of the door for the ramp landing: 8′ 8″ wide, centered on the door, reaching 7′ 1″ from the front wall. Digging moves the stakes, so reset them and check the diagonals again.

The pad sits inside a frame of pressure-treated 4x6s laid flat, joined at each corner with two 10″ timber spikes, squared until both pad diagonals read 16′ 1 1/2″ and pinned with 24 rebar stakes. Spread 4″ of 3/4″ crushed stone, compact it in two layers with a hand tamper and check it with a long straight board and a level. The three 12 ft skids lie across the pad along the 12 ft side, 2′ 10 1/4″ on center, crown up, and are leveled along their length and to each other.

Floor frame and walls

The floor frame is two 12 ft rims and ten 5′ 9″ joists. It weighs about 180 lb once nailed and racks out of square if you lift it, so you build it in place on top of the skids and square it to the same 13′ 5″ diagonals before you fasten it. Three sheets of 3/4″ tongue and groove plywood cover the deck, and the decking map says which piece goes where.

Each wall is framed flat on the deck, checked by its diagonals and raised as a bare frame by two people. Siding goes on after all four stand.

• Walk the front wall. With the back wall standing there is not room to frame the front wall at its own edge, so the plan has you frame it facing the other way, tip it up and walk it across the deck, with a diagonal brace tacked on while you move it.
• Start from the ground. A wall laid flat hangs well past this small deck, so the lifters start on the ground, 9 3/4″ below the deck, and stop blocks on the rim keep the bottom plate from kicking out.
• Brace at once. Never leave a raised wall unbraced, even for a minute, and never raise one in gusty wind.
• Buy full 8 ft boards. The lumber yard order asks for three full 96″ 2x4s, not 92 5/8″ precut studs, where the plan calls for them.
• Siding last. Screw a straight 2×4 ledger to the floor frame at the siding’s bottom line, stand each sheet on it, and have a helper hold it plumb. A 4×8 sheet of T1-11 weighs about 60 lb.

Door, windows and ramp: sizes and positions

The door opening is 5′ 0″ wide and 6′ 4 1/2″ tall, from 3′ 6″ to 8′ 6″ measured from the left corner of the front wall, under a header of two 2x8s at 5′ 3″ with 1/2″ plywood between them. That leaves 3′ 6″ of solid wall on each side of the door for a shelf or a tool rack. Once the bottom plate is cut out of the opening it is 6′ 6″ framed, and 6′ 5 1/4″ clear under the head stop.

The two leaves come from two new T1-11 sheets, since the cut-out piece is too short. Each is 2′ 5 5/8″ wide and 6′ 5 1/4″ tall, with a glued and screwed 1×4 frame (two stiles and three rails) and two Z braces. Three T-strap hinges hang each leaf, held by carriage bolts with the nuts inside, and the leaves swing out. The left leaf, seen from outside, carries the latch; the right one is fixed with two barrel bolts and a 1×2 astragal. Brush sweeps close the gap under the leaves, an aluminum threshold cap crosses the opening, and a 10″ hook and eye on each leaf holds it open in wind. Our guide on how to build shed doors covers the same method.

Both windows are prefabricated units for 18″ x 27″ rough openings under doubled 2×6 headers, one in each 6 ft wall, with their sills 4′ 0″ above the bottom plate. The right-wall window sits from 8″ to 2′ 2″ from the front end of its plate, and the left-wall window from 3′ 2 3/4″ to 4′ 8 3/4″ from the back end of its plate. Each opening is wrapped with flashing tape before the unit goes in, and a drip cap goes over every head casing. The back wall has no opening, so its full 12 ft stays free for shelves.

The ramp is detachable pressure-treated lumber, 5′ 9″ wide and 3′ 6″ out at a 1:6 slope. Wheels roll on at a beveled toe and meet a 13/16″ lip at the door, grit tape runs along each board, and two hook-and-eye latches hold it to its ledger. Unhook it to lift it away when you level or move the shed. Our guide on how to build a shed ramp explains the idea.

What is on the 6×12 shed material list

The shopping list is split by stage, so you can buy the floor first and the roof later. Lumber is listed in the stock length that wastes the least for each part.

The list also counts the temporary pieces: 12 wall braces, 4 braces for the center gable studs, stakes and deck cleats, all reused later. Add 2 or 3 spare studs for bad boards. The longest pieces are four 16 ft treated 4x6s for the pad frame and two 16 ft 1x4s for the corner trim, then the 14 ft boards: 14 2x4s, the 2×6 ridge, 2 1x6s and 4 1x4s. Check that your trailer or the yard’s delivery can carry them.

What you can fit in a 6×12 shed

The plan’s “What fits inside” drawing is to scale and shows the room as 11′ 5″ wide and 5′ 5″ deep inside, with 7′ 7 1/2″ of clear height to the underside of the top plates. This is a tool and garden shed:

• A push mower and a wheelbarrow. With the handle folded and nose in, the mower is 1′ 10″ x 3′ 2″ and the wheelbarrow is 2′ 2″ x 5′ 0″. The double door is about 4′ 11 1/2″ wide with both leaves open, so they go in side by side. The plan has you angle the wheelbarrow in wheel first toward the back left corner, then swing the handles left.
• Shelves on the long back wall. The drawing puts 12″ deep shelves along the back wall, with a 7′ 3″ wide aisle from the door to them. Shelves are yours to add and are not on the shopping list.
• What does not fit. A 42 in deck rider is 5′ 10″ long and the room is 5′ 5″ deep, so it does not fit, and neither does a bike parked front to back.

Measure your own machine against the door width before you count on it. The ramp is already part of the plan for the 9 3/4″ step.

How the 6×12 gable roof is framed

Twenty 2×4 rafters in 10 pairs and 4 fly rafters meet a 2×6 ridge board 12′ 8″ long, cut in one piece from a 14 ft board, so there is no splice. The rafters rise 1′ 8 5/16″ from the top of the walls to the top of the ridge. The rafter board is 4′ 6 9/16″ long, and three come out of each 14 ft 2×4 if you flip the pattern end for end.

• Ridge support. A 1′ 2 13/16″ center gable stud on each end wall, braced plumb, holds the ridge while you set the end pairs, so you need no temporary posts.
• Ties. Eight 2×4 rafter ties, 6′ 0″ long, sit beside the interior pairs to stop the walls spreading, and 4 collar ties hold the pairs together at the ridge in wind. The rafter ties are not a storage loft, so keep anything you set on them light.
• Gable plate ties. Four flat 2x4s sit under the first 2 rafter ties of each gable wall, 2′ 0″ and 4′ 0″ from the front corner (2′ 9 3/4″ long on the left gable, 2′ 6 3/4″ on the right), and are fixed with framing angles to stiffen the top of those walls against wind.
• Hurricane ties. Sixteen hurricane ties hold the rafters to the plates, and 4 framing angles hold the end rafters at the corners.
• Shingles. Each side takes 11 courses at 5″ exposure, and 32 cap pieces cut from 11 shingles cover the ridge: about 126 shingles, 5 bundles.

Ventilation: soffit vents and a screened gap

This gable is too low for a louvered vent, so the plan does not have one. Air comes in at the soffit through one 16 x 8 in screened vent per eave, plus a 1/4″ gap at the siding, and passes the screened slots over the frieze blocks. It leaves through a 1″ screened gap under the end rafters on all 4 rakes.

The plan prints the sum: about 57 sq in high at the rake gaps and 65.0 sq in low over both eaves, 122.0 sq in in all. A common attic rule of thumb, not a shed requirement, asks for the floor area divided by 150, which is about 69 sq in for 72 sq ft, about 35 sq in low and 35 high, so the total, low and high are all met.

Free preview vs the full 6×12 plan

Use the free PDF to judge the drawings. It walks through the five stages (site and foundation, floor, walls, roof, trim) with views of the same shed and framing previews. It has no material list, no cut list and no dimensioned framing drawings.

The full 70-page plan adds all 28 sections, each wall drawn stud by stud with a position table, the door leaf with its frame and brace cuts, the pattern rafter, the gable stud table, the floor, roof and siding sheet maps, the ramp’s cut sizes, the shopping list, the lumber yard order, the cut list and the cutting plan. Before it went on sale every measurement was cross-checked with 106 checks on the walls and openings, the floor, the roof framing, the sheets and shingles, the board lengths and the lists, and all of them pass. Checkout emails it to you, and a 30-day money-back guarantee covers it.

Before you build a 6×12 shed

• Permits. Size, height and setback rules for sheds vary by town and HOA. This one is 72 sq ft and 10′ 5 5/16″ tall. Call 811 before you dig, and check your local permit office before you buy lumber.
• Foundation. Skids on gravel suit a small shed; shed foundation options covers the alternatives. Use ground-contact rated pressure-treated lumber (UC4A or higher) for the skids, pad frame and ramp.
• Anchors. The plan works out that the empty shed on loose skids can slide in gusts near 55 mph, so it adds 6 screw-in ground anchors with steel straps, 3 along each outside skid. Check your local permit office for what your area asks.
• Snow and wind. The plan uses common small-shed framing. In heavy snow or high-wind areas, ask about rafter size, spacing and anchors before you build.
• Ladders. The eave is about 8′ 8″ above the ground. Set an extension ladder 1 ft out at the foot for every 4 ft of height, and keep ladders and sheets at least 10 ft from any overhead power line.
• Wood and sheets. Keep lumber dry and off the ground until you build, because wood that stays wet decays faster (USDA Forest Products Laboratory Wood Handbook). The APA stamp on each OSB sheet shows its span rating (APA: OSB).

Related plans

• The same 6 ft gable wall on an 8 ft front: the 6×8 gable shed plan.
• The same 12 ft front, 2 ft deeper, with room for a riding mower: the 8×12 gable shed plan.
• Small with a single-slope roof: the 6×8 lean-to shed plan or the 6×10 lean-to shed plan.
• Every size on the gable shed plans page.