Large 10×12 Lean To Shed Plans |Free DIY Projects

Large 10×12 Lean To Shed Plans – Overview

Material List

Shopping List

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

• 7 – 2×4 – 12′
• 6 – 2×4 – 10′
• 48 – 2×4 – 8′

Rafters

• 10 – 2×4 – 12′
• 6 – 2×4 – 8′

Siding

• 13 – t1-11 exterior siding – 4’x8′ sheet

Roof

• 7 – 2×4 – 16′
• 3 – 2×4 – 8′

Door/Window

• See “Shed Door” for details
• See “Shed Window” for details

Trim

• 10 – 1×4 – 10′

Hardware

• 3 1/2″ galvanized nails
• 2″ deck screws
• 1 1/2″ galvanized finishing nails
• corrugated roofing panels
• roofing panel screws
• Z flashing

Cutting List

(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

• 5 – 2×4 – 12′
• 2 – 2×4 – 11′ 5″
• 4 – 2×4 – 9′ 5″
• 46 – 2×4 – 7′ 6″
• 2 – 2×4 – 10′
• 10 – 2×4 – 18 1/2″

Rafters

• 10 – 2×4 – 11′ 10 3/8″
• 6 – 2×4 – 8′ (cut to size)

Siding

• 13 – t1-11 exterior siding – 4’x8′ sheet (cut to size)

Roof

• 7 – 2×4 – 14′
• 3 – 2×4 – 8′ (cut to size)

Door/Window

• See “Shed Door” for details
• See “Shed Window” for details

Trim

• 10 – 1×4 – 10′ (cut to size)

Floor

• 2 – 2×6 (pressure treated) – 12′
• 10 – 2×6 (pressure Treated) – 9′ 9″
• 3 – 4×4 (pressure treated) – 12′

Floor joist are 16″ on center. Use 3 1/2″ nails to assemble. Square the floor frame by measuring diagonally until both sides measure the same.

• 4 – 3/4″ tongue and groove plywood – 4’x8′ sheet (cut to size)

Measure and cut the 3/4″ tongue and groove plywood for the floor deck. Screw 2″ deck screws through the floor deck and into the floor frame.

Walls

Front/Back Wall Frame:

• 4 – 2×4 – 12′
• 28 – 2×4 – 7′ 6″
• 2 – 2×4 – 11′ 5″

Wall studs are 16″ on center, assemble the wall frame using 3 1/2″ nails.

Frame the door and window, click links below for details:

• Door Framing
• Window Framing

Here is a close up look at the front and back wall frame ends.

Right/Left Wall Frame:

• 4 – 2×4 – 9′ 5″
• 18 – 2×4 – 7′ 6″
• 2 – 2×4 – 10′

Frame the right and left wall frame as shown on drawing above. Use 3 1/2″ nails to assemble.

Raise and secure wall frames using 3 1/2″ nails.

Front Top Wall Frame:

• 1 – 2×4 – 12′
• 10 – 2×4 – 18 1/2″

Frame the top wall frame as shown on drawing above. Use 3 1/2″ nails to assemble.

Rafters

• 10 – 2×4 – 11′ 10 3/8″

Cut the top and bottom rafter ends as shown on drawing below.

Cut the top rafter end as shown on drawing above.

Cut the bottom rafter end as shown on drawing above.

Rafters are 16″ on center. Install rafters using 3 1/2″ nails.

• 6 – 2×4 – 8′ (cut to size)

Measure and cut the top wall studs for the right and left walls to size, notch around rafters and install using 3 1/2″ nails.

Cut 2×4 blocking to size and install between rafters using 3 1/2″ nails.

Siding

• 13 – t1-11 exterior siding – 4’x8′ sheet (cut to size)

Measure and cut the t1-11 exterior siding to size. Install Z flashing as shown on drawing above. Notch front and back top siding around rafters. Install siding using 1 1/2″ finishing nails.

Roof

• 7 – 2×4 – 14′

Install the 2×4 purlins as shown on drawing above using 3 1/2″
nails.

• 3 – 2×4 – 8′ (cut to size)

Measure and cut 2×4 blocking and install between the purlins using 3 1/2″ nails.

Install the metal corrugated roofing panels.

Door

Install door, use the link below for door construction details.

• Shed Door

Trim

• 10 – 1×4 – 10′ (cut to size)

Measure and cut 1×4’s to size for the shed corners and window trim. Install the 1×4 trim using 1 1/2″ finishing nails.

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