Have this storage shed that water seeps in through the base and door and also through the base of the window and puddles up around the edge and door. I want to change out all the lumber at the bottom of shed and some of the support 2x4s. Was hoping for suggestions on how to repair/prevent the water from seeping from slab under the walls. Previous owner put a cement border that does not prevent the seeping. I also want to replace door with a solution for the water to not seep under it as well. Thank you.