Roof leak is almost never where you think it is, from where you see the
water inside. Gooping crap onto roof to band-aid a fix generally results
mainly in problem stripping off the old roof.

Considering the structural damage that can result from such leaks, it
seems IMHO that the prime option is to strip it and start over.

Depending on your local climate, built-up flat roofs are good for 10-15
years max. Some membrane-types, professionally installed, are allegedly
longer-lived.

Were I paying for it, I'd be damn sure that the roof was vented (read
cooled) as possible, just below.

HTH,
John

Jack wrote:
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?