Framing Walls & Roof: The Skeleton of Your Tiny Home

Framing transforms your flat subfloor into a three-dimensional structure. This is where your tiny home starts to feel real.

Wall Framing Basics

Lumber Selection

For tiny homes, standard framing lumber works well:

• Wall studs: 2x4 for interior walls, 2x4 or 2x6 for exterior walls (2x6 allows more insulation)
• Top and bottom plates: Same dimension as studs
• Headers: Doubled 2x6 or 2x8 over windows and doors
• Grade: #2 or better SPF (Spruce-Pine-Fir) or Douglas Fir

Building a Wall Section

Build walls flat on the subfloor, then tilt them up:

1. Cut plates — Mark stud layout at 16" on center
2. Cut studs — Standard height minus the combined thickness of top and bottom plates
3. Frame openings — Install king studs, jack studs, headers, and cripple studs for windows and doors
4. Assemble — Nail through plates into stud ends with 16d framing nails (2 per connection)
5. Add sheathing — 1/2" OSB or plywood, nailed at 6" on edges, 12" in the field
6. Tilt up — With a helper, raise the wall and secure the bottom plate to the subfloor

Critical Measurements

In a tiny home, every inch matters more than in conventional construction:

• Ceiling height: 6'8" minimum for livable space, 3'6" minimum for sleeping lofts
• Highway limits: If on a trailer, total height including trailer must stay under 13'6"
• Door openings: Frame at 82.5" height for standard doors

Roof Framing

Choosing Your Roof Style

Style	Pros	Cons
Shed (single slope)	Simplest to build, great for solar panels	Less headroom on low side
Gable (A-frame)	Maximum loft space, classic look	More complex to build
Gambrel (barn)	Most interior volume	Heaviest, most complex

Building a Shed Roof

The simplest option for beginners:

1. Frame one wall taller than the opposite wall (2" per foot of run for adequate slope)
2. Cut rafters with a bird's mouth notch to sit on the top plates
3. Space rafters at 16" or 24" on center
4. Install a ridge board if needed for spans over 12 feet
5. Sheathe with 1/2" or 5/8" OSB

Building a Gable Roof

For maximum loft space:

1. Build triangular trusses from 2x4 lumber with gusset plates
2. Space trusses at 24" on center
3. Brace the first truss plumb, then work outward
4. Install purlins between trusses for sheathing support
5. Sheathe and install drip edge

Structural Connections

Tiny homes, especially those on trailers, experience forces that conventional homes don't — road vibration, wind loads during transport, and dynamic loading. Use:

• Simpson Strong-Tie connectors at all critical joints
• Structural screws instead of nails for trailer connections
• Hurricane ties at every rafter-to-wall connection
• Hold-downs anchoring walls to the trailer frame

Squaring and Bracing

Before closing up walls:

1. Check each wall for plumb with a 4-foot level
2. Measure wall diagonals — adjust until they match
3. Install permanent diagonal bracing or let-in bracing
4. Temporarily brace walls until sheathing is complete

Your frame is up — next comes the roof covering, then you can work rain-or-shine on the interior.