It looks like your trim piece is on top of the siding. If this is the case you need to cut the siding so there is an area to place a new piece of trim. Before you put the new trim piece back on, put a piece of Z flashing ( you will need someone with a Break to custom make this piece) under the siding and over the trim. NO CAULK NEEDED!
Last edited by chb70; 01-28-2009 at 10:59 PM.