How to Frame Shed Walls

Framing a shed wall is the same job a house framer does, just shorter. Once you know what each piece is for, the layout reads like a map, and you can build a wall on the deck in an hour or two. This guide walks through the parts, the numbers for a standard 8x10 gable shed, and the order to build and raise the walls. For your own size, the shed designer draws every wall with the same conventions.

The parts of a wall

Wall height and precut studs

The stud length is always the wall height minus 4-1/2 inches for the three plates. Our designer's default gable wall is 88-3/4" with 84-1/4" studs, each cut from an 8 ft 2x4. That height is set by the siding: the panel covers the 7-1/4" floor band (a 2x6 floor frame, the 3/4 inch subfloor and a 1 inch allowance below it) plus the wall, and at 88-3/4" the total is exactly the 96 inches of a 4x8 panel. One panel then runs from below the floor frame to the top plate with no horizontal seam.

Lumber yards also sell 2x4 studs precut to 92-5/8 inches. With the three plates they make a 97-1/8 inch wall, the height one lumber dealer's product page gives for that stud, and our lean-to plans use it for the tall front wall. On a gable shed that taller wall puts the siding band past 96 inches, so the designer asks how to cover it: 4x8 panels with a horizontal joint on Z-flashing over 2x4 blocking, or 4x9 panels, which are usually special order. LP's panel siding instructions call for a 3/8 inch gap and Z-flashing at a horizontal seam, and the model code wants that joint lapped, shiplapped or Z-flashed over solid blocking.

Doors, windows and headers

The rough opening is the hole in the framing, a little bigger than the door or window unit. Measure the unit you plan to buy or build, then frame to the opening it asks for. On the 8x10 front wall the designer frames a 48" wide by 78" tall door opening:

• Header: two 2x6 plies, each 51" long (the opening plus 1-1/2 inches of bearing on each jack).
• Jack studs: 76-1/2" long, from the bottom plate to the underside of the header.
• Cripples: 2-1/4" long, from the top of the 5-1/2" deep header to the underside of the top plate.
• Bottom plate: left whole while you build and raise the wall, then cut out between the jacks.

The window on the side wall is framed the same way, plus a rough sill and cripples underneath. The designer lines the window header up with the door header at 78", so a 24" by 24" window has the underside of its rough sill 52-1/2" above the subfloor and 51" cripples below it.

How big a header needs to be depends on the load above it. On a gable shed the side walls carry the rafters, so the designer checks each side wall header for bending and for deflection under your snow load, using the span divided by 240 that the model code applies to most framing members. The gable end walls carry almost no roof load. The model code does not require a load-bearing header in a nonbearing wall at all (section R602.7.4 of the 2021 International Residential Code), but the designer still puts a doubled 2x6 over every door. The door leaf is a separate build: see the how to build shed doors guide.

Which walls run through

At each corner one wall runs the full length of the building and the other butts into it. On a gable shed the side walls, which carry the rafters, run through at the full 10' depth. The front and back walls fit between them, so they are 7 inches shorter than the building is wide: 89" for an 8 ft shed.

The through walls get an extra stud at each end, set in from the corner, so the inside corner has solid wood to nail siding and trim to. Then the cap plate reverses the pattern: on the butt walls it runs the full 96", and on the through walls it stops short to meet it. That overlap is what locks the four walls into one box, and it is what the model code asks for: a double top plate that overlaps at the corners, with any joints in the top plates at least 24 inches apart. Nail the laps at the corners with two 16d common nails, and the cap to the plate below with 16d common nails every 16 inches.

Build and raise a wall

1. Cut the plates in pairs. Cut the bottom plate and first top plate for each wall to the same length and clamp them together, edges flush.
2. Mark the stud layout. Hook the tape on the end that starts at the building corner and mark 15-1/4 inches, then every 16 inches, with an X on the side where each stud goes.
3. Mark the openings. Mark the rough opening, then a jack stud and a king stud on each side of it, and change the layout marks inside the opening to cripples.
4. Build the header. Cut two header plies to the opening width plus 3 inches and nail them together with 16d common nails every 16 inches along each edge.
5. Assemble the wall flat. Lay the plates on edge on the floor, set the studs, kings, jacks, header and cripples in place, and nail through the plates into each stud end with two 16d common nails or three 3 x 0.131 inch nails.
6. Square and sheath if you can. Measure the diagonals, square the wall, and nail on the panel siding while the wall is still flat on the deck.
7. Raise, plumb and brace. Tilt the wall up, nail the bottom plate to the floor frame, plumb the ends with a level and brace them to the deck.
8. Tie the corners with the cap plate. Nail the second top plate so it overlaps the corners and crosses the joint between walls, then remove the braces once the roof is on.

The layout starts from the building corner, not from the end of a butt wall. That way the 16 inch marks land on 4 ft centers all the way around, and the edges of 4x8 panels always fall on a stud. For a butt wall, subtract the 3-1/2 inch thickness of the through wall before you mark. The designer does this for you and shows the result on every elevation.

Gable end studs

On a gable shed the front and back walls have a triangle above the top plate. Once the rafters are up, fill it with short studs on the same 16 inch layout, each one cut at the roof angle to meet the end rafter. For the 8x10 at a 6/12 pitch the designer measures them to the long point at 6-5/8", 14-5/8", 21-7/8". Cut each one a hair long and trim to fit, because a real rafter is never exactly where the drawing says.

Then move on to the roof. How to build shed rafters covers the pattern rafter, the birdsmouth and the ridge. Or see all of this pulled together in the free 8x10 gable shed plan and the 10x12 gable shed plan.