PrecisionMachinisT wrote:

....


Sounds like a 'hot tar roof'....

If it leaks, just have some more hot tar put on it--this time put on
lots of it, and also maybe some rocks / pebbles to make up for
temperature expansion/ contraction.

The pebbles are generally considered there to help protect the tar by
breaking up the rain drops as the fall on it. I have not heard the idea of
expansion and contraction, but that sure does not mean it does not perform
that function as well.

I agree that if the roof is in generally good shape and there is one or
two small leaks that can be found some additional tar patch is not a bad
idea. I suspect my original message may have been a little misleading in
this area. I would suggest there are three or more levels of maintenance of
tar roofs. Simple patching, total tear off and re-roof and what I usually
call re-roof which may not involve a tear off, but mostly just adding an
additional layer of tar and gravel. Clearly it is the condition of the roof
that dictates which approach is best.

--
Joseph Meehan

26 + 6 = 1 It's Irish Math