Apprentice Training, structural & framing

Chimney Roof Cricket (Saddle) Valley Framing

2x4 ridge board, dual 2x4 valley sleeper plates, bevel-cut 2x4 cricket jack rafters, 1/2 in OSB decking

Time: 1 h 15 min
People: One
Level

Before you start

Clear 2.5 × 2 m of floor and lay out the parts.
32 parts and 108 fasteners in 7 steps.
You'll want a screwdrivers and a claw hammer and a tape measure and a drill and a marker and a spirit level and a trimming knife.
Code mandates a roof cricket for any chimney or curb projection wider than thirty inches perpendicular to roof slope.
Maintain non-combustible clearance requirements between wood cricket framing members and masonry chimneys.

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

Chimney Roof Cricket (Saddle) Valley Framing

2x4 ridge board, dual 2x4 valley sleeper plates, bevel-cut 2x4 cricket jack rafters, 1/2 in OSB decking

Time: 1 h 15 min
People: One
Level

Before you start

Clear 2.5 × 2 m of floor and lay out the parts.
32 parts and 108 fasteners in 7 steps.
You'll want a screwdrivers and a claw hammer and a tape measure and a drill and a marker and a spirit level and a trimming knife.
Code mandates a roof cricket for any chimney or curb projection wider than thirty inches perpendicular to roof slope.
Maintain non-combustible clearance requirements between wood cricket framing members and masonry chimneys.