On 9/26/2015 8:08 AM, songbird wrote:
Don Y wrote:
....
How do I locate a leak (other than visually) in that orientation?
I was assuming to fill it and watch for drips -- coloring the water
to make the leaks more readily located.

blotter paper, tissue paper, just press it along the
area in question until it shows moisture, but it may
be the case that you have more than one leak so check
the whole seam.

This is the underside of a barrel. It obviously won't
leak if upside down. So, I need to elevate the barrel
in such a way that I can *see* the underside (or, "blot it")

Barrels are ~2' dia x 3' tall. So, I'd have to support
it along the circumference -- or, the "sides" parallel
to the seam (assuming the seam is where the leak lies).
And, still be able to get under it to see what's going on.

there is marine grade epoxy you can get that is a
putty, but perhaps it would crack if the barrel is
flexible... hmm, might want to use a marine grade
silicone caulk instead, yes, applied to clean surface
inside over the area of the discovered leak.

I'll scrub the barrel this afternoon (get rid of the
dirt/sediment stains so I have a uniform surface to
examine). Then, see what I can find to reliably support it
"as high as possible" (not keen on having to put my cheek
on the ground in the *hope* of seeing what's under it!)