On Jun 3, 10:49*am, "Ray" wrote:
An odd problem: Our toilet-tank has developed a leak which seems to come
from noshre. From observation the slow drip seems to be coming through the
porcelain itself, although there are no cracks are holes that can be seen.

It most certainly doesn't come from a pipe, because the area all around the
bulls-eye of the leak remains completely dry.

Is this possible that the water could be seeping through a porous procelain?

If so, would smearing the area with caulking compound, inside and out, stop
the leak?

it is not leaking through the porcelin, please describe the area that
the leak is visable