Is it possible to get some extra mileage out of a tar and gravel roof
that has developed a leak? The roof in question is about 6' by 14' with
minimal perceivable slope, maybe 1/8" to the foot. It is pretty old and
the leak could be anywhere, but the drip down below is coming down in
the middle.

I was wondering if Henry 201 or a similar liquidy asphalt product might
not penetrate and seal smale cracks in tar and gravel roofs... or will
it just leak onto the ceiling below?