After all of the walls are up, prior to setting your top plate, check and plumb the alignment of each wall, getting as close to square and plumb as possible. If electrical chases are being utilized, mark the vertical chases onto your dimensional lumber top plate. Cut the top plate so that the ends of the top plate have a minimum 2’ overlap with the wall panel seams. Apply a 3/8” diameter bead of Premier Mastic down the center and along each edge of the wall panel recess. Set the top plate and nail it off according to the engineering specs, (usually 8d nails 6” o.c.) finish by drilling the electrical chase access with a minimum 1 1/2” auger bit.
Headers
Depending on the engineering requirements of your windows and doors, Premier’s
Determine trimmer height: depth of the header
+the top plate + bottom plate - height of panel = height of trimmer (11 1/4” + 1 1/2”
+1 1/2” - 96” = 81 3/4”). Cut your trimmer and cripple, apply Premier Mastic and nail them together. Slide the pieces into the panel recess. Next, install the panel that sits below the window. Put your trimmer and cripple into
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