I have a steel hatch to my basement that sometimes leaks under heavy rain. I've noticed that it's just one side of the hatch and if it's a sunny day I can see what looks like a few pinholes that the sun shines through.
I suppose I can try to re-caulk the perimeter of the hatch, but I was wondering if I can just apply a layer of flex tape since it's hard for me to see the holes from the top side and I do a pretty messy looking job with a caulk gun.
I've heard some say that flex tape is not UV stable and shouldn't be used outside but the advertising says it does. Can I use Flex Seal Liquid Rubber in a Can?
This doesn't have to last forever, as long as it helps with heavy downpours and can last 5 years. It's not in direct sunlight.
Is it ok to use flex tape, and if not, is there another product that is recommended?