I would like to protect a couple of airbricks from water ingress. The airbricks are at ground level. Is there anything you'd recommend? I made a new paved area with gaps for plants and I used quite thick slabs up to the house, including where the ventilation bricks are. I did tilt the slabs slightly away from the wall but not enough. They are concreted in so I don't really want to move them. The problem only really happens when it's very wet and I can see some puddling this week.