Apprentice Training, structural & framing

Gable Roof Dormer Valley Rafter & Trimmer Framing

Double 2x10 trimmer rafters, 2x8 valley rafter, 2x6 dormer common rafters, dormer sidewalls

Time: 4 h
People: Two
Level

Before you start

Clear 3 × 3.5 m of floor and lay out the parts.
36 parts and 136 fasteners in 5 steps.
You'll want a screwdrivers and a claw hammer and a tape measure and a drill and a marker and a spirit level.
Ensure dormer corner studs bear directly over doubled trimmer rafters, not intermediate unsupported sheathing.
Double-check valley rafter line deductions for ridge board and trimmer thicknesses prior to making cuts.

Apprentice Training & Risk NoticeEducational training demonstration only. Risk: Real-world structural lumber sizing, spans, and fastener schedules carry legal liability and must comply with local building codes (IRC/IBC/OSHA) and certified engineering.

Apprentice Training, structural & framing

Gable Roof Dormer Valley Rafter & Trimmer Framing

Double 2x10 trimmer rafters, 2x8 valley rafter, 2x6 dormer common rafters, dormer sidewalls

Time: 4 h
People: Two
Level

Before you start

Clear 3 × 3.5 m of floor and lay out the parts.
36 parts and 136 fasteners in 5 steps.
You'll want a screwdrivers and a claw hammer and a tape measure and a drill and a marker and a spirit level.
Ensure dormer corner studs bear directly over doubled trimmer rafters, not intermediate unsupported sheathing.
Double-check valley rafter line deductions for ridge board and trimmer thicknesses prior to making cuts.