I have a raised patio job I will be doing soon. The raised patio will come up to the top part of the foundation (12" high) The problem I have is that the house has 3 foundation vents where the patio will be. How do I work around these without covering up. My first thought was to build a wall around the vents so that this space would be open and lay my pavers to this wall. Then install pavers inside the openings to the bottom of the vent. The problem I see with this is that water would sit inside of this hole. Second thought would be to put a drain in the hole and send it out somewhere. What do most of you do when you build raised patios against a house and the house vents will be covered?