>>2929153
Step 1: Don't use laminate. It is a cheap solution for cheap people.
Step 2: Water is coming in because it is pooling next to your house. Remove that travesty of garbage in front of your door, regrade the ground around it so it creates a slope away from the door, and install a real concrete pad. Picture related.
Step 3: Identify other methods of water ingress. Bad weather stripping, for example, and correct them.
Step 4: You might also consider extending your eves or creating an awning/canopy over the door to keep water off of it.