How To Build A 12×8 Shed Plans Ideas (Free Plan Included)


Are you looking for how to build 12×8 shed plans? I have here a free detailed 12×8 shed plan ideas that will help you to build the shed quickly.

The Importance of Having 12X8 Shed Plans

One of the best types of shed plans are going to be your 12×8 shed plans.

What do you need to do? There is not much involved with building your own shed, but there are some things that you are going to want to take the time to learn before you even begin.

If you do this, you will save a ton of time and money and learn something that you may not have thought about before.

You will need to first decide where you want your shed. Do you want it in the backyard? Is it going on your land?

Where would you like it to be? Now you need to figure out what size she'd do you want? This depends on a few things such as how many things you have and where you plan to put it.

After you have figured this out, you can then go ahead and start looking for a set of plans. You can find them all over, and there are several places that offer them.

But, there is a better alternative. The alternative is to go online and look for free plans. Sure you may be able to find some there, but how much do you really know about them?

I would caution you to not take any of these plans lightly. Even if they are free, they could be the wrong ones.

Remember, you are investing time and money into something that you are going to need to make work. And if you find a set of plans that you like and they were free, you are going to need to take time to learn how to build it correctly.

The best way to learn how to do this is to simply step by step through each step. What do I mean by step through?

This means that you simply follow the instructions and figure out how each step fits into the next one. So, if you have a picture in your plans that you want to fill out, just step over it and fill in that area.

You need to be sure that the plans that 12×8 shed plans you pick are complete and easy to read. If you have any questions, ask as many questions as you need to until you are completely satisfied that you have found the right set of plans for you.

Again, you will save a lot of time and money if you can find the right plans. But first, you need to be sure that you picked the right one for you.

The best way to figure this out is to just start reading. You will soon find that you will be overwhelmed with information.

But, to keep it simple, just start with the steps that are going to take you from beginning to end. This is the best way to compare plans and find one that you can feel good about.

Another thing to keep in mind when looking for a plan is to look for the diagrams. Even if you can't see the actual shed, just looking at diagrams will help you understand exactly what you are looking for.

If you can't figure out how to build it, then you aren't going to get very far. Take the time to learn how to build the best sheds that you possibly can. After all, this will ensure that you will always have a 12×8 shed that you can be proud of.

A good set of plans will have a step by step process to building your shed. This way, you can be sure that you don't skip any steps or do anything without reading through it carefully.

If you skip a step, you may end up wasting materials or even getting hurt. You don't want this to happen when you're building something as important as a shed.

Some plans will also include the materials that you will need for construction. Make sure that you have them listed and ready to grab.

This will save you a lot of time when it comes down to actually building your shed. Also, make sure that you have the right tools, so that you don't waste time or money buying tools that won't work properly for the type of building project you have planned.

All in all, the most important part of building a shed is making sure that you have all the right plans in order to do it correctly.

Take the time to look over them before you buy. Pay attention to the step-by-step process and read the materials list thoroughly. Take your time and don't rush through anything. Good luck!

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How To Build A 12x8 Shed

This 8 × 12-ft. shed features a simple gable roof, double doors, and side and rear windows for natural lighting. With full-height walls and doors, there's ample room for storing large items or creating a comfortable workspace.

An optional wood ramp helps in moving lawnmowers and other heavy equipment. The shed's simple construction makes it especially adaptable for different uses.

For example, you can easily frame in additional windows—to use the shed as a workshop or potting shed—or omit all of the windows and devote the space entirely to secure storage.

The finish materials for the basic shed also are true to its name: asphalt roof shingles, plywood siding, and simple trim details are appropriately practical for this classic outbuilding design. You can purchase prehung doors or build your own using the project plans.

How To Build A 12x8 Shed



If you want 12,000 more shed plans with details, drawings, elevations, and step-by-step instructions like this, Click Here Now and get started on your next shed!

How To Build A 12x8 Shed


How To Build A 12x8 Shed


How To Build A 12x8 Shed



How To Build A 12x8 Shed


How To Build A 12x8 Shed


How To Build A 12x8 Shed


How To Build A 12x8 Shed





















How To Build A 12x8 Shed




















How To Build A 12x8 Shed












How To Build A 12x8 Shed












How To Build A 12x8 Shed













How To Build A 12x8 Shed






















How To Build A 12x8 Shed


























How To Build A 12x8 Shed












If you want 12,000 more shed plans with details, drawings, elevations, and step-by-step instructions like this, Click Here Now and get started on your next shed!



1. Excavate the building site and add a 4″ layer of compactible gravel. If desired, add an extension to the base for the optional wood ramp. Tamp the gravel thoroughly, making sure it is flat and level.

2. Cut three 4 × 4 treated timber skids at 144″. Arrange and level the skids on the gravel bed, following the FLOOR FRAMING PLAN.

3. Cut two 2 × 6 rim joists at 144″ and ten joists at 93″. Mark the joist layout onto the rim joists, following the plan. Assemble frame with 16d galv. common nails; be sure to check each joist for crowning and install it with the crowned edge up.

4. Set the floor frame on top of the skids and measure the diagonals to make sure it's square. Install metal clip angles at each joist along the two outer skids, using 1 1/2″ joist hanger nails and 16d galv. common nails, and toenail each joist to the center skid with 16d galv. nails.

5. Install the tongue-and-groove floor sheathing, starting with a full sheet at one corner of the frame. Use 8d galv. nails driven every 6″ along the edges and every 12″ in the field. 17

How Much To Build A 12x8 Shed












Secure the joists to the outer skids with angles. Drive hanger nails into the joists and 16d nails into the skids. Frame and raise the walls, then fasten adjacent walls together at the corner studs.

1. Snap chalk lines on the floor for the wall plates.

2. Cut the 2 × 4 wall plates: four at 144″ for the sidewalls and four at 89″ for the front and back walls.

3. Mark the stud layouts onto the plates following the FLOOR PLAN.

4. Cut twenty-seven studs at 92 5/8″, and cut six at 81 1/2″ to serve as jack studs.

5. Build three headers with 2 × 6s and 1/2″ plywood: one at 65″ for the door opening, one at 67″ for the right side window, and one at 35″ for the rear window.

6. Assemble, raise, and brace the walls one at a time, then add the double top plates.
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1. Cut two pattern rafters, following the RAFTER TEMPLATE. Test-fit the rafters using a 2 × 8 spacer block, then cut the remaining twelve common rafters. Cut eight rafters for the gable end overhangs—these do not have bird's mouth cuts.

2. Cut the 2 × 8 ridge board at 156″. Draw the rafter layout onto the top plates and ridge board, using 16″ on-center spacing. The outsides of the outer common rafters should be 6″ from the ends of the ridge board.

3. Install the rafters. Reinforce the rafter-wall connection with metal anchors—install them on all but the outer common rafters.

4. Cut three 2 × 4 rafter ties at 96″, and clip the top outer corners so they won't project above the rafters. Position each tie next to a pair of rafters as shown in the FRAMING ELEVATIONS.

Face nail each tie end to the rafter with three 10d nails, then toenail each tie end to the top wall plate with two 8d nails.

5. Cut the gable-wall plates to reach from the ridge to the wall plates. Install the plates with their outside edges flush with the outer common rafters. Cut and install the gable studs, following the FRAMING ELEVATIONS.

How To Build A 12x8 Shed












Fasten the bottom ends of the common rafters to the wall plates with metal anchors.
Attach lookouts to four of the overhang rafters, then nail the overhang rafters to the outer common rafters.

How To Build A 12x8 Shed












Attach lookouts to four of the overhang rafters, then nail the overhang rafters to the outer common rafters

1. Cut twelve 2 × 6 lookouts at 3″. Endnail the lookouts to each of the inner overhang rafters, using 16″ on-center spacing (see the GABLE OVERHANG DETAIL).

2. Facenail the inner overhang rafters to the outer common rafters with 10d nails.

3. Fasten the outer overhang rafters to the ridge and lookouts, using 16d nails.

1. Cut and install the 2 × 6 sub fascia along the eaves (see the EAVE DETAIL). Keep the ends flush with the outsides of the overhang rafters, and the bottom edges flush with the bottom rafter edges; use 16d nails.

2. Install the 1 × 8 fascia along with the gable overhangs, then along the eaves, holding it 1/2″ above the rafters so it will be flush with the sheathing; use 6d galv. finish nails.

3. Install the 1/2″ plywood sheathing, starting at a lower corner of the roof; use 8d box nails driven every 6″ along the edges and every 12″ in the field of the sheets.

4. Attach metal drip edge along the eaves, then apply 15# building paper over the sheathing. Add drip edge along the gable ends, over the paper.

5. Install the asphalt shingles, starting at the eave edge. If desired, install roof vents.

How To Build A 12x8 Shed












Install the plywood roof sheathing after installing the fascia. Nail every 6″ at the edges and every 12″ in the field.

How To Build A 12x8 Shed












Rip the soffit panels to fit between the wall plates and fascia. Fasten the panels to the nailers, rafters, and subfascia.

1. Cut twelve 2 × 2 nailers to fit between the rafters, as shown in the EAVE DETAIL. Fasten the nailers between the rafters with 10d face nails or 8d toenails.

2. Rip the 3/8″ plywood soffit panels to fit between the wall framing and the fascia. Fasten the soffits to the rafters with 3d galv. box nails.

3. Cut holes for four soffit vents: locate one vent in each of the two outer rafter bays, along the eave, on both sides of the building. Install the soffit vents.

4. Install the plywood siding, using 8d galv. finish nails. Butt the top edges of the siding against the soffits. Don't nail the siding to the rear-window and door headers in this step.

At the gable ends, install Z-flashing along the top edge of the siding, then continue the siding up to the soffits.

Note: Along the sidewalls, 8-ft. siding will cover the floor plywood by about 1/2″ (this is necessary); if you want the siding to cover the floor framing, use 4 × 9-ft. sheets.

1. Cut out the bottom plate from the door opening.

2. Cut the door frame pieces from 3/4″ × 4 1/2″ (actual dimension) cedar: cut the head jamb at 61 1/4″ and the side jambs at 81 7/8″. Assemble the frame by screwing through the head jamb and into the side jambs with 2 1/2″ deck screws.

3. Cut 1 × 2 stops and install them inside the jambs with 1 1/4″
deck screws or 3d galv. finish nails. If the doors will swing out, install the stops 2 1/4″ from the outside edges of the frame; if they'll swing in, install the stops 2 1/4″ from the inside edges.

4. Install the door frame in the rough opening, using shims and 10d galv. casing nails. Make sure the frame is square and plumb.

5. Cut twelve pieces of 1 ×, 6 tongue-&-groove boards, at 81 3/4″. For each door, fit together six boards with their ends flush, then mark the two end boards for trimming so that the total width is 30″. Trim the end boards.

6. Cut the Z-brace boards following the DOOR ELEVATIONS. Lay the doors on a flat surface and attach the brace boards using construction adhesive and l 1/4″ wood screws.

7. Install the hinges and hang the door, using shims to set the gaps at the bottom and top of each door.
8. Install flashing above the door, nail-off the siding, then install the 1 × 4 door trim, using 8d galv. finish nails.
How To Build A 12x8 Shed











Use pairs of tapered shims to plumb and level the dopamine in the rough opening.

How To Build A 12x8 Shed Plan












Assemble the window frames with screws. Add a 2 × 4 mullion in the center of the side window frame.

If you want 12,000 more shed plans with details, drawings, elevations, and step-by-step instructions like this, Click Here Now and get started on your next shed!

Note: If you've bought prehung windows for the shed, install them following the manufacturer's directions. To build homemade windows, use the following directions.

1.For each window cut the 3/4″ × 4 1/4″ frame stock to form a rectangular frame with outer dimensions that are 1/2″ shorter and narrower than the rough opening.

Assemble the frame with 2 1/2″ deck screws. Cut and install a 2 × 4 mullion in the center of the frame for the side-wall window.

2. Install each window frame in its rough opening, using shims and a level to make sure the frame is plumb and level and the jambs are straight. Fasten the frame with 10d galv. casing nails.

3. Cut the 1 × 2 stops. Bevel the outer sill stops as shown in the WINDOW JAMB DETAIL. Attach the inner stops with 6d galv. finish nails. Order the glass to fit.

4. Install the glass and outer stops, applying glazing tape to the stops on both sides of the glass. Install the 1 × 4 window trim.

5. Install the horizontal 1 × 4 trim as shown in the ELEVATIONS. Fasten the trim with 8d galv. finish nails.

6. Install the 1 × 4 corner trim so that it butts against the horizontal trim and extends to the bottom edges of the siding.

7. Caulk along all trim joints, where trim meets siding, and around the door and window trim.

Determining the width and length (and thus the slope) of the ramp is up to you, but here is the basic construction procedure:

1. Determine the best slope for the ramp using boards or plywood set on the ground and the shed floor. Mark the ground to represent the end of the ramp.

2. Cut two 2 × 8 pads to the full width of the ramp.

3. Measure the distance from the ground to the shed floor; subtract 2″ from that dimension to get the height of the tapered stringers.

4. Use the ground marking to determine the length of the stringers—be sure to account for the 1 1/2″ thickness of the decking. Cut the tapered stringers from 2 × 8 lumber: cut one for each end and one for every 16″ to 24″ in between.

Attach the pads to the stringers with 16d galv. nails driven through the bottom faces of the pads and into the stringers

5. Cut 2 × 4s for the ramp decking—the number needed depends on the length of the sloping sides of the stringers. Allow for a 1/8″ gap between decking boards when calculating the number needed.

6. Attach the decking boards to the supports with 16d galv. nails or 3″ deck screws, maintaining a 1/8″ gap between boards.

7. Set the ramp in place against the shed and fasten it by toenailing through the end stringers and top decking board with 3 1/2″ deck screws.
How To Build A 12x8 Shed Plan











Build the ramp with pressure-treated 2 × 8s and 2 × 4s, following the plan's size or building it to a custom size.



If so, visit Ryan's Shed Plans and download 12,000 more plans covering all types of sheds from large gazebos to small garden sheds Even better, many of our plans are MUCH more detailed than this! All our other plans also come in BOTH metric and imperial units.


How To Build A 12x8 Shed Plan

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