This report presents a 3D window installation sequence with detailed step-by-step instructions on how to effectively install a window using building paper as the drainage plane. These details were published in Water Management Guide; Building Science Press, 2006.
Step 1: OSB on wood frame wall
Step 2: Install wood backdam
Step 3: Mechanically attach strip of building paper at sill; attach at top only, leave sides and bottom loose
Step 4: Apply first piece of adhesive-backed sill flashing; apply second piece of adhesive-backed sill flashing
Step 5: Install corner flashing patches at sill
Step 6: Install building paper at jambs
Step 7: Apply sealant at jambs and head; alternatively, sealant can be placed on the back side of the nailing flange (back-caulked)
Step 8: Install window; install jamb flashing then head flashing
Step 9: Install first course of building paper under sill flashing
Step 10: Install second course of building paper at jambs
Step 11: Install third course of building paper at jambs
Step 12: Install fourth course of building paper at head
