post hangs from these nails. The balance of the nailing should be in the center of the slot, 8" to 12" apart, again leaving 1/32" between the nail head and the corner post. This allows for the expansion and contraction to occur at the bottom. If more than one length of corner post is required, overlap the upper piece over the lower piece by cutting away 1" of the nailing flange on the top piece. Overlap 3/4", allowing 1/4" for expansion. This method will produce a visible joint between the two posts, but will allow water to flow over the joint, reducing the chance of water infiltration. Windows, Doors and Roof Lines Flashing The following instructions should be followed when applying window flashing to an existing window: Installation Steps Apply a continuous bead of sealant adjacent to the sill of the existing window. For windows with nailing flanges, the sealant should be applied to the nailing flange in a manner that covers the nails and nail slots (figure A). Apply a minimum of 9" wide horizontal sill flashing level with the bottom edge of the existing window by pressing the flashing into the sealant bead at its top edge. Cut the sill flashing long enough to extend a minimum of 9" beyond each jamb. Fasten the sill flashing at the bottom and side edges (figure B). Apply a continuous bead of sealant adjacent to the side jambs of the window. For windows with nailing flanges, the sealant should be applied