The length of the overhang. Depth of bird mouth. That is usually 1 1/2 inches so the rafter can rest at exactly the depth of the top plate. With this information determined and the rafter ends cut to the proper pitch, layout of the bird's mouth is fairly easy. Start by measuring ...
The bird’s mouth is the “cut out” piece of the rafter that sits on the top plate, as shown in the diagram below. The side elevation plan This is the side elevation plan, which gives a perspective of the frame viewed from the side. This plan gives the length and height of the ...
Step 7 - Install Second Length of Roof Cap Once the first section is secure you can install the next section. Slide the second section under the first by one to two inches. Install the foam insulation piece in the same way and secure the cap with self-sealing screws. Continue to install...