12×16 Barn Shed Plans | DIY Build Projects

12×16 barn shed plans, this DIY project includes a PDF download (link at bottom of post).

Plans include drawings, measurements, cutting list, and shopping list.

Overview

Floor View

Front View

Side View

Cutting List

(material for door/window not included)

Part#	Qty.	Disc.	Size
floor	8	4×4 (pressure treated)	8 ft.
floor	2	2×6 (pressure treated)	16 ft.
floor	13	2×6 (pressure treated)	11 ft. 9 in.
floor	6	tongue and groove plywood	3/4 in. x 4 ft. x 8 ft.
walls	4	2×4	16 ft.
walls	2	2×4	15 ft. 5 in.
walls	54	2×4	7 ft. 6 in.
walls	4	2×4	11 ft. 5 in.
walls	2	2×4	12 ft.
rafters/truss	60	2×6	59 5/8 in. (22.5-degree angle cuts on both ends)
rafters/truss	1	plywood	1/2 in. x 4 ft. x 8 ft. (cut to size)
rafters/truss	14	2×4	8 ft, (cut to size)
siding	20	t1-11 exterior siding	4 ft. x 8 ft.
roof	16	2×4	21 3/4 in.
roof	4	2×4	8 ft. (cut to size)
roof	11	plywood	1/2 in. x 4 ft. 8 ft.
door		see shed door/window
trim	6	1×4	8 ft. (cut to size)
trim	4	1×4	10 ft. (cut to size)

FLOOR

• 8 – 4×4 (pressure treated) – 8 ft.
• 2 – 2×6 (pressure treated) – 16 ft.
• 13 – 2×6 (pressure treated) 11 ft. 9in.

Assemble as shown on drawing, use 3 1/2 in. nails to assemble.

Nail through the band and into the joist.

Joist are spaced out 16 in. on center.

Toenail through frame and into the skids.

---

• 6 – tongue and groove plywood – 3/4 in. x 4 ft. x 8 ft.

Measure and cut the plywood to size as shown on drawing.

Install to floor frame using 2 in. deck screws.

WALLS

Wall Frame – Sides

• 4 – 2×4 – 16 ft.
• 2 – 2×4 – 15 ft. 5 in.
• 34 – 2×4 – 7 ft. 6 in.

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

Wall studs are 16 in. on center.

---

If you are installing a door and window to the side walls see door/window for framing details.

---

Side wall frame close up view of the ends.

---

Wall Frame – Front and Back

• 4 – 2×4 – 11 ft. 5 in.
• 2 – 2×4 – 12 ft.
• 20 – 2×4 – 7 ft. 6 in.

Assemble the front and back wall frames as shown on drawing using 3 1/2 in. nails.

Wall studs are 16 in. on center.

---

If you are installing a door and window to the front or back walls see door/window for framing details.

---

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

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

RAFTERS/TRUSS

• 60 – 2×6 – 59 5/8 in. (22.5-degree angle cuts on both ends)

Cut the 2×6 rafters to size as shown on drawing.

---

Using a framing square, measure and cut the birds mouth as shown on drawing on 26 of the rafters.

---

• 1 – plywood – 1/2 in. x 4 ft. x 8 ft.

Use 1/2 in. plywood to make gussets.

Cut gussets as shown on drawing.

---

Assemble the roof truss as shown on drawing using 2 in. deck screws.

Screw through the gusset and into the rafters.

---

Install roof truss as shown on drawing.

Roof truss is spaced out 16 in. on center.

Install using 3 1/2 in. nails.

---

• 14 – 2×4 – 8 ft.

Measure and cut 2×4’s to size and install to the front and back top wall frame.

Notch the top end of the 2×4’s around rafters.

SIDING

• 20 – t1 11 exterior siding – 4 ft. x 8 ft.

Install siding using 2 in. finishing nails.

Notch siding around rafters.

---

Install top siding using 2 in. finishing nails.

Use Z-flashing between the top and bottom siding.

Cut siding along rafters.

ROOF

• 16 – 2×4 – 21 3/4 in.

The front and back of the shed will have about an 8 in. roof overhang.

To make the overhang bigger or smaller adjust the length of the outriggers.

Notch the front and back rafters and siding to fit around outriggers.

Install using 3 1/2 in. nails.

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

---

• 4 – 2×4 – 8 ft.

Measure and cut 2×4’s and siding to size to fill in the gaps between the walls and roof as shown on drawing.

---

• 11 – plywood – 1/2 in. x 4 ft. 8 ft.

Measure and cut 1/2 in. plywood to size for the roof deck.

Install the roof deck using 2 in. nails.

---

Install roofing felt, drip edge, and shingles.

---