8×12 Lean to Shed – Roof Plans

This step by step diy project is about diy 8×12 lean to shed roof plans. This is PART 2 of the lean to shed project, where I show you how to build the lean to roof for the 8×12 shed. Moreover, I have designed shed with many sizes so check them out, as well. Roof pitch is 3:12. Take a look over the rest of my woodworking plans, if you want to get more building inspiration.

Building an 8×12 lean-to shed offers some great benefits that make it worth your while. First, it provides valuable extra storage space for your tools, garden equipment, and seasonal items, keeping your main areas clutter-free. The lean-to design is space-efficient, making it perfect for smaller yards or fitting alongside existing structures. Plus, it’s a relatively simple build, giving you a rewarding DIY experience while enhancing your property value and functionality.

When buying the lumber, you should select the planks with great care, making sure they are straight and without any visible flaws (cracks, knots, twists, decay). Investing in cedar or other weather resistant lumber is a good idea, as it will pay off on the long run. Use a spirit level to plumb and align the components, before inserting the galvanized screws, otherwise the project won’t have a symmetrical look. If you have all the materials and tools required for the project, you could get the job done in about a day. See all my Premium Plans HERE.

Projects made from these plans

8×12 Lean to Shed Roof Plans

Building a 8×12 lean to shed

Cut List

• H – 4 pieces 5/8″ T1-11 siding – 48″x96″ long, 2 pieces – 48″x29 3/4″ long, 2 pieces – 48″x17 3/4″ long SIDING
• I – 10 pieces of 2×6 lumber – 120″ long RAFTERS
• I – 4 pieces of 2×6 lumber – 120″ long, 12 pieces – 8 1/4″ long OVERHANGS
• J – 2 pieces of 1/2″ plywood – 4’x8′ long, 2 pieces – 4’x4′ long, 2 pieces – 12″x96″ long, 2 pieces – 12″x24″ long, 1 piece – 24″x96″ long, 1 piece – 24″x48″ long ROOF
• K – 2 pieces of 1×8 lumber – 120″ long, 2 pieces – 108 3/4″ long, 2 pieces – 60 3/4″ long ROOF TRIMS
• L – 150 sq ft of tar paper, 150 sq ft of asphalt shingles ROOFING
• M – 2 pieces of 2×4 lumber – 80″ long, 1 piece – 79″ long JAMBS
• N – 2 pieces of 2×4 lumber – 73″ long, 2 pieces – 36″ long, 1 piece – 29″ long, 1 piece of T1-11 siding – 36″x80″ long 2xDOOR

Shopping List

• 7 pieces of T1-11 siding sheets – 4’x8′
• 15 pieces of 2×6 lumber – 10 ft
• 10 pieces of 2×4 lumber – 8 ft
• 5 pieces of 1/2″ plywood – 4’x8′
• 4 pieces of 1×8 lumber – 10 ft
• 2 pieces of 1×8 lumber – 8 ft
• 150 sq ft of tar paper, 150 sq ft of asphalt shingles
• 50 ft drip edges
• 700 pieces of 8d nails
• 20 pieces of rafter ties
• 1 box of 1 1/2″ “structural ties
• 200 pieces of 2” nails
• 1 shed hinge kit
• wood filler , wood glue, stain/paint

Tools

 Hammer, Tape measure, Framing square, Level, Pocket hole jig

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses

Time

One week

Related

• PART 1: 8×12 Lean to Shed Plans
• PART 2: 8×12 Lean to Shed Roof Plans

Building a 8×12 lean to roof

Rafters

Build the rafters from 2×6 lumber. Mark the cut lines on the slats and get the job done with a circular saw.

Fitting-the-rafters—8×12-lean-to-shed

Fit the rafters to the top of the lean to shed. Place the rafters every 16″ on center and lock them into place with rafter ties and 1 1/2″ structural screws.

8×12 Shed – side siding

Cut the panels for the lean to ends and secure them into place with 6-8d nails. Leave no gaps between the panels for a neat result.

Assemble the overhangs

Assemble the side overhangs from 2×6 lumber. Drill pilot holes through the sides and insert 3 1/2″ screws into the blockings.

Fitting the overhangs

Fit the blockings to the sides of the shed, align the edges flush and secure them into place with 3 1/2″ screws.

Fitting the roof sheets

Lay the 3/4″ plywood sheets to the top of the shed starting with the bottom of the roof. Use 1 5/8″ screws to secure the sheets into place, every 8″ along the rafters.

Side roof trims

Fit the 1×8 trims to the sides of the shed. Align the edges flush, leave no gaps between the boards and then lock them into place with 2″ nails.

Front and back roof trims

Fit the 1×8 trims to the front of the shed. Align the edges flush, leave no gaps between the boards and then lock them into place with 2″ nails.

Fitting the roofing sheets

Cover the roof of the shed with roofing felt, making sure the strips overlap at least 2″. Secure the tar paper to the plywood sheets with roofing staples. In addition, cut a 12″ piece for the top ridge. Fit the side drip edges over the roofing felt, while the bottom drip edges should be fit under.

Building the double shed doors

Fitting the door jambs

Use 2×4 lumber for the door jambs. Fit the door jambs around the door and then secure them into place with 3 1/2″ screws.

Building-the-door-frame-for-shed

Use 2×4 lumber for the door frame. Drill pocket holes at both ends of the vertical and middle components. Align the edges flush and insert 2 1/2″ screws to assemble the door frame.

Assembling the door

Use T1-11 siding sheets for the door panel. Align the edges flush and insert 1 5/8″ screws to secure the panel to the frame. Add glue to the joints.

Fitting the double shed doors

Fit the doors to the opening and then align the edges flush. Use hinges to secure the doors to the jambs. Also, set a latch so you can keep the doors locked.

8×12 Shed – Lean to shed MOP

Fill the holes with wood putty and let them dry out for a few hours. Smooth the surface with 100-220 grit sandpaper and remove the residues with a damp cloth.

How to build a 8×12 lean to shed

To equip and make the most of your 8×12 lean-to shed, start by installing sturdy shelving units and pegboards to organize your tools and equipment efficiently. Add a workbench for a dedicated workspace and consider using storage bins and hooks to keep smaller items neatly stored. Finally, ensure good lighting with some solar-powered lights or LED fixtures, making it easier to work in the shed at any time.

Top Tip: Apply a few coats of paint or stain to the components, to enhance the look of the project. Check PART 1 of the project to learn how to build the frame of the shed.

This woodworking project was about 8×12 lean to shed roof plans free. If you want to see more outdoor plans, check out the rest of our step by step projects and follow the instructions to obtain a professional result.

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