I've been having problems with water seepage underneath both sills on
a basement and exterior garage doors when it rains. How do I know if
the sill was part of the original door jamb when it was installed. If
it wasn't how do I remove it with minimal damage to the door jamb?
Also, when i install the new sill what type of caulk should I use(
acrylic+silicone, liquid nails, waterproof paneling adhesive,
polyurethane, concrete+mortar, etc...) and where do I apply it?