The purlins should be up on edge for stiffness not laid flat and bolted to the studs with inch carriage bolts not nailed.
Framing a chicken coop roof.
Check to see that there is an overhang at both the front and back of the coop.
Place the roof on top of the coop.
With your materials gathered it s time to cut the frame.
This will eventually become your coop s rafters.
All of my other chicken coops were built with eaves that extend 1 2 feet.
To make a simple roof join two 40 inch 101 6 cm by 84 inch 213 4 cm pieces of plywood with some inexpensive hinges.
From the 2 x 2 inch x 8 foot board cut three lengths each 32 3 4 inches long.
You can see these eaves on one of my coops pictured below.
Cut the lumber to the following lengths.
Should your chicken coop roof have extended eaves.
From the 2 x 4 inch x 12 foot boards cut three 31 inch lengths to form the floor frame.
Eaves are the part of the roof that extends beyond the coop building.