I have a bottom plate leaking water underneath it after a rain and need some
advice. For reasons I won't bother to go into one wall of a barn sits
directly across the middle of a concrete slab patio. The exterior is hardie
panel that comes down to 1/2 inch from the slab. A piece of aluminum L
flashing (4"x6") is sandwiched between the bottom plate 2"x4" and the
concrete. Before bolting the bottom plate down, several beads of calk were
laid down between the flashing and slab but the joint leaked water after a
rain. I then caulked the outside edge with a bead of black flashing caulk --
the 50 year kind and it still leaks. Any suggestions how I can make this
water proof? Thanks.