10x12 Barn Shed Plans - Construct101 (2024)

A shopping list is included. Since lumber can be purchased in different sizes the shopping list will vary. Study the cut list to see what will work best for you.

(material for door/window not included)

Floor

• 2 – 2×6 – pressure treated – 12′
• 10 – 2×6 – pressure treated – 10′
• 3 – 4×4 – pressure treated – 12′
• 4 – 3/4″ tongue and groove plywood – 4’x8′ sheet

Walls

• 6 – 2×4 – 12′
• 6 – 2×4 – 10′
• 46 – 2×4 – 8′

Truss/Rafters

• 24 – 2×6 – 10′
• 2 – 1/2″ plywood – 4’x8′ sheet

Siding

• 15 – t1-11 exterior siding – 4’x8′ sheet
• 6 – 2×4 – 8′

Roof

• 7 – 2×4 – 8′
• 8 – 1/2″ plywood – 4’x8′ sheet

Trim

• 13 – 1×4 – 8′

Hardware

• 3 1/2″ galvanized nails
• 2″ galvanized nails
• 2″ deck screws
• 2″ galvanized finishing nails
• shingles
• roofing felt
• drip edge
• roof tacks
• roofing staples

(material for door/window not included)

Floor

• 2 – 2×6 –pressure treated – 12′
• 10 – 2×6 – pressure treated – 9′ 9″
• 3 – 4×4 – pressure treated – 12′
• 4 – 3/4″ tongue and groove plywood – 4’x8′ sheet (cut to size)

Walls

• 4 – 2×4 – 12′
• 2 – 2×4 – 11′ 5″
• 46– 2×4 – 7′ 6″
• 4 – 2×4 – 9′ 5″
• 2 – 2×4 – 10′

Truss/Rafters

• 48 – 2×6 – 4′ 2 1/2″ (22.5-degree angle cuts both ends in opposite directions)
• 54 – 1/2″ plywood – 1′ 4″ x 9 5/16″

Siding

• 15– t1-11 exterior siding – 4’x8′ sheet – (cut to size)
• 6– 2×4 – 8′ (cut to size)

Roof

• 16 – 2×4 – 1′ 9 3/4″
• 3 – 2×4 – 8′ (cut to size)
• 8 – 1/2″ plywood – 4’x8′ sheet (cut to size)

Trim

• 13– 1×4 – 8′ (cut to size)

Floor

Cut two 2×6’s to 12′ long for the floor band. Cut ten 2×6’s to 9′ 9″ long for the floor joist. Cut three 4×4’s to 12′ long for the skids.

Use 3 1/2″ nails to assemble, nail through the band and into the joist. Joist are spaced out 16″ O.C.

Square the floor frame by measuring diagonally until both sides measure the same.

3/4″ tongue and groove plywood is used for the floor deck.

Measure and cut to size the plywood and install to floor frame using 2″ deck screws.

Walls

2×4 lumber is used for wall framing. Wall studs are spaced 16″ O.C.

Side Wall Frame:

Cut four 2×4’s to 12′ long for the top and bottom plate. Cut two 2×4’s to 11′ 5″ long for the top double plate.Cut twenty eight 2×4’s to 7′ 6″ long for the wall studs.

Assemble both side wall frames as shown on drawing above using 3 1/2″ nails.

If you are installing a door and window see details below

Shed Door

Shed Window

Side wall frame ends close up view.

Front/Back Wall Frame:

Cut four 2×4’s to 9′ 5″ for the top and bottom plate. Cut two 2×4’s to 10′ long for the top double plate. Cuteighteen 2×4’s to 7′ 6″ for the wall studs.

Assemble with 3 1/2″ nails as shown on illustration above.

For framing and building the shed door click on link below:

Shed Door

Nail wall frames into the floor and adjacent wall frames using 3 1/2″ nails.

Do not nail on bottom plate door opening, plate on door opening will be cut and removed.

Truss/Rafters

2×6 lumber is used to build the roof truss. Roof truss is spaced out 16″ O.C.

Install windows and t1-11 exterior siding.

Measure and cut siding to size and install using 2″ finishing nails.

Install top siding using2″ finishingnails, cut siding along rafters.

The front and back of the shed will have about an 8″ roof overhang. To make the overhang bigger or smaller adjust the length of the outriggers.

Cut sixteen 2×4’s to1′ 9 3/4″long for the outriggers. Notch the rafters and siding to fit around outriggers. Install using 3 1/2″ nails.

Use the remaining rafters for the front and back roof trim.

Cut 2×4’s and siding to size to fill in the gap between the walls and roof.

Cut 1/2″ plywood to size for the roof deck. Install the roof deck using 2″ nails.

Install roofing felt, drip edge, and shingles.

Door

Install door, for details on building the shed door click here.

Trim

Measure and cut 1×4 lumber to size for the window and corner trim. Use 2″ finishing nails to install 1×4 trim.