The first two pieces of lumber to affix is the ridge board studs.
Putting a roof on a dog house.
Cover the surface with tar paper and secure it into place with staples.
Building an off grid home in the canadian wilderness.
Run the paper up one side of the roof and down the other.
Apply only enough staples to hold the paper down until you are ready to add the shingles.
Building the roof of the dog house.
Use a construction grade staple gun to attach the roofing felt to the roof.
Assuming the dog house is rectangular and fully constructed except for a roof measure the halfway point on both short ends and mark it.
Step 2 ridge board stud.
Cut a piece of 3 4 plywood at the dimensions shown in the diagram and secure it to the rafters with 1 1 4 screws.
Make sure you center the plywood piece to the rafters before inserting the screws into place.