Wall framing is the skeleton of your shed. Get it right and everything that follows — cladding, roofing, doors, windows — fits together cleanly. Get it wrong and you’ll fight racking walls, sticking doors, and out-of-plumb cladding joints for the life of the structure. The good news is that shed wall framing is one of the most beginner-friendly structural tasks in woodworking. The process is logical, the materials are inexpensive, and mistakes are usually fixable before the wall goes vertical. This guide walks you through every step using Australian standard framing practice.
Tools You’ll Need
- Circular saw or drop saw (compound mitre saw preferred for repetitive cuts)
- Framing hammer or nail gun (a 90mm framing nail gun makes the job significantly faster)
- Tape measure, pencil, speed square
- Long spirit level (1.8m minimum for plumbing walls)
- String line for alignment
- Clamps (4× minimum for holding plates while marking)
- Chalk line
- Drill/driver with structural screws as an alternative to nailing
Understanding the Parts of a Wall Frame
Bottom Plate
The bottom plate (also called the sole plate) is the horizontal member that sits on the floor frame or slab. It’s the base to which all the studs are fixed. Use 90×45mm MGP10 pine. On a concrete slab, use H2F or H3 treated timber for the bottom plate (it contacts the slab, which can wick moisture). Fix to slab with M12 chemical anchors or ramset fasteners at maximum 1200mm centres.
Top Plate
The top plate (or wall plate) sits on top of the studs and is doubled to distribute load and tie walls together at corners. The second (upper) plate overlaps the corners and butt joints of the first plate — this is what locks the wall frame together into a rigid unit. Nail top plates together with 90mm framing nails at 300mm centres.
Studs
Studs are the vertical members that carry vertical loads and provide fixing points for cladding. Use 90×45mm MGP10 pine. For a 2.4m finished wall height, your studs will be cut to 2340mm — this allows for a 90mm bottom plate plus two 45mm top plates (180mm total) to make up the full 2400mm + 90mm bottom plate height. Wait — the finished wall height calculation is: stud length + bottom plate + top plate(s). For 2400mm finished height: 2400mm − 90mm (bottom plate) − 90mm (doubled top plate = 2 × 45mm) = 2220mm stud. Adjust for your specific plan.
Corner Posts
Corners need extra width to give cladding a solid fixing edge on both intersecting walls. The standard approach is a three-stud corner: three 90×45mm studs nailed together as an L or U shape to create a corner that’s wide enough for cladding to land on both sides. Nail corner posts together through the face at 300mm centres before erecting the wall.
Window and Door Headers
Any opening in a load-bearing wall (which all exterior shed walls are) needs a header (lintel) above it to transfer loads around the opening to the jack studs and trimmer studs on either side. For shed openings up to 2.1m wide, a doubled 90×45mm or a single 190×45mm LVL header is standard. The header sits on two jack studs (trimmer studs) cut to the correct rough opening height, with king studs outside the jack studs running full height.
Stud Spacing Reference
| Stud Spacing | Wall Height | Max Span (no bracing) | Notes |
|---|---|---|---|
| 450mm centres | 2.4m | 2.4m | Australian standard; suits most cladding products |
| 450mm centres | 3.0m | 3.0m | Requires check under AS 1684 for wind region |
| 600mm centres | 2.4m | 2.4m | Only use with thicker cladding (e.g., 12mm Hardiflex) |
| 600mm centres | 3.0m | Not recommended | Increase to 450mm or use larger studs |
The 450mm stud spacing is the Australian residential standard under AS 1684. It differs from American construction (which uses 400mm or 600mm / 16″ or 24″ centres). Stick to 450mm for Australian shed construction — your Colorbond and Hardiflex cladding products are designed around this spacing.
Step-by-Step: Framing a Shed Wall
- Cut your plates. Cut the bottom plate and first top plate to the full wall length (the outside dimension of the wall). If the wall is 3.0m, both plates are 3.0m. Cut them together to ensure they’re identical — clamp them side by side and cut both at once with a circular saw.
- Lay plates flat and mark stud positions. Lay the bottom plate and top plate parallel to each other, inside faces up, about 2.2m apart (your stud length). Using a tape measure and pencil, mark stud positions at 450mm centres across both plates simultaneously. Mark with an X on the side the stud lands on. Also mark door and window opening positions.
- Mark door and window openings. Mark the king stud, jack stud, and cripple stud positions on both plates. The rough opening width for a door is the door width plus 50mm each side for the frame. Mark the header position clearly on the king studs.
- Cut your studs. Using a drop saw, cut all common studs to the same length. Set a stop block on your saw table to cut multiple studs identically. Cut jack studs (trimmers) to rough opening height minus plate thickness. Cut cripple studs to fill the space above the header to the top plate.
- Assemble the frame flat. Lay the bottom plate on your floor platform with studs standing vertically. Fix studs with two 90mm framing nails through the plate into each stud end — nail at a slight angle (skew nailing) for best holding power, or use a nail gun for face-nailing through the plate. Install corner posts, jack studs, header, and cripple studs. Nail the first top plate across all stud tops.
- Check for square before raising. Measure the two diagonals of the assembled wall frame. If they’re equal, the frame is square. If not, push the long-diagonal corner in until both measurements match. Tack a temporary diagonal brace across the frame to hold it square during the raise.
- Raise the wall. For a 10×12 shed wall, two people can raise most walls safely. Stand the wall up, push it to position, and brace it immediately with temporary diagonal props fixed to the floor platform. Do not release the wall until at least two braces are in place.
- Plumb the wall. Hold a long spirit level against the face of the wall. Adjust the temporary braces (lengthen or shorten) until the wall reads plumb on both the face and the end. Fix the braces firmly. The wall should stand plumb on its own.
- Fix the bottom plate. On a timber floor frame: fix the bottom plate through the floor decking into the floor joists below with 90mm nails or 100mm structural screws at 600mm centres. On a concrete slab: drill through the plate and into the slab, insert chemical anchors or dynabolts, and tighten.
- Install the second top plate. The second (upper) top plate overlaps the corner junctions and any wall butt joints by at least one stud bay. Nail it to the first top plate with 90mm nails at 300mm centres. This is what locks the walls together — don’t skip it.
How to Plumb and Brace Correctly
A wall that looks plumb by eye is rarely plumb enough. Always use a spirit level. Check plumb in two directions: face plumb (the wall leans neither into nor out of the building) and end plumb (the wall doesn’t twist). Temporary braces should run from mid-wall height diagonally to the floor platform at approximately 45°. Fix the brace to a block nailed into the floor — don’t rely on nailing into the platform surface edge-on.
Leave temporary braces in place until all four walls are up, the top plates are doubled, and ceiling joists or rafters are installed. The bracing can only be removed once the structure is triangulated by the roof.
Fixing to Different Foundations
Timber skid foundation: Fix bottom plate to floor joists below with 90mm framing nails or 100mm structural screws through the decking. Space fixings every 600mm and at each joist crossing.
Concrete slab: Install M12 anchor bolts cast into the slab during the pour, or use M12 chemical anchors drilled post-cure. Bottom plates must be H2F or H3 treated pine. Use a foam or rubber sill sealer strip between the plate and the slab to prevent moisture wicking.
Build from Plans — Not Guesswork
The steps above will get you through wall framing for a standard shed. But knowing stud spacing and plate sizes is only part of it — you also need the correct header sizes for your specific spans, the right bracing layout for your wind region, and accurate cut lists so you buy the right amount of timber.
Ted’s Woodworking provides complete shed plans with wall framing details, stud layouts, header schedules, and step-by-step instructions for every common shed size. It’s the resource that makes the difference between a shed that’s built in a weekend and one that’s puzzled over for months.
Get complete shed framing plans at Ted’s Woodworking →
