HELP!!! We have water seeping into our building. We have constructed a metal building on a concrete slab. The people that finished the slab didn't level it properly and it doesn't slope properly. Water puddles on the porch, right at the front wall and seeps under the wall. The problem is that we have already built our residence inside the building. We are at the drywall stage and haven't laid our flooring yet. We've had a lot of rain lately the water just sits on the porch and puddles and leaks under the wall. What to do???