Had a new driveway poured and now I have a 4 foot long gap about 3/8" wide between driveway and foundation that didn't get sealed with the felt (not sure what it actually is) strip. Now water leaks into my crawl space. What can I use to seal the gap between foundation and driveway. Keep in mind that the felt is there it just doesn't seal. It looks like the foundation wall has a slight bow in it and that is the reason for the gap.