I live in a 90+ year old fieldstone house with a roofed, wooden tongue & groove porch that needs painted badly. My problem is that all around the perimeter of the porch floor there is a gap (up to 1/2" wide) between the ends of the porch boards and the fieldstone walls. When blowing rain or snow lands on the porch, it melts into the basement room below it.
I previously tried caulking that gap with latex putty, 100% silicon putty and spray foam, but after a winter, those products remain stuck to the fieldstone BUT loose from the wooden porch boards, thus creating more openings for leaks. Im looking for a flexible product that can fill that gap and also "give" as the climate goes from one extreme to another.
Can anyone suggest a product and/or procedure I can use? Ive sc****d, wire brushed all the porch boards and cleaned up all the failed caulk and am waiting to give it a good paint job that will last.