Stop in for a cup of coffee

All sealed up. Tuns out I already had the perfect thing to use. Lol. Bought this stuff years ago to seal the skylight on dad’s trailer when we @Old man ray replaced the roof. Says right on the label ‘excellent below grade’ - something I could not find on any of the products I looked at in Home Depot.
I pity the fool that has to work on this next time. Hopefully not me. :eek: