Large 10x12 lean to shed plans, free PDF download.

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

Large 10×12 lean to shed plans. Plans include a PDF download, material list, how-to drawings, and measurements.

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′
  • 5 – 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

Trim

  • 10 – 1×4 – 10′

Hardware

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′
  • 5 – 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

Trim

  • 10 – 1×4 – 10′ (cut to size)

Floor

Shed floor framing details.
  • 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.


Lean to shed floor deck.
  • 5 – 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

Back wall framing details.

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.


Front wall framing details.

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


Front and back wall frame ends close up view.

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


Lean to shed right and left wall framing details.

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.


Large 10x12 lean to shed plans, wall framing details.

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


Top front wall framing details.

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

2x4 lean to shed rafters.
  • 10 – 2×4 – 11′ 10 3/8″

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


Top rafter bird mouth cutting details.

Cut the top rafter end as shown on drawing above.


Bottom rafter bird mouth cutting details.

Cut the bottom rafter end as shown on drawing above.


Large 10x12 lean to shed plans, roof rafters 16 inches on center.

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


Large 10x12 lean to shed plans, 2x4 roof blocking and top side wall studs.
  • 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

Large 10x12 lean to shed plans, install t1-11 exterior siding and Z flashing.
  • 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

Large 10x12 lean to shed plans, 2x4 roof purlins.
  • 7 – 2×4 – 14′

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


Large 10x12 lean to shed plans, 2x4 blocking between purlins.
  • 3 – 2×4 – 8′ (cut to size)

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


Large 10x12 lean to shed plans, metal corrugated roofing panels.

Install the metal corrugated roofing panels.


Door

Large 10x12 lean to shed plans, shed door installation.

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


Trim

Large 10x12 lean to shed plans, 1x4 corner and window 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.



2 comments

  1. William Schmelzer

    Re ‘large 10×12 large shed plan’, Why do you list 7 2×4 16 feet long in the ‘shopping list’ for the roof, but 14 feet in the ‘cut’ list?

    My roofing metal is 38″ wide for 36″ coverage so I need to make adjustments. does the metal extend beyond the purlins, and if so, by how much? I will have 15′, 2″ width. I would rather not have to cut the metal.

    This is a woods cabin project for my sons and adult grandsons.

    Thanks.

    • I’d recommend watching a few YouTube videos for installing a metal roof. These plans don’t give enough details for you to know there should be an insulating/barrier strip underneath the perimeter of the metal, and doesn’t discuss drip edges or capping for metal roofing.

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