Good morning,

I have a bathroom which is in the roof of my house where the waste pipe
leads into the attic. The house is 5 years old and last month I noticed
light leaking into the floor below (ground floor). It seems the sealant
has failed at a join. Is it reasonable to expect to reseal this pipe
without taking it out? There is no visible hole (there is only about an
inch or so space between the bottom of the pipe and the attic floor).

I'm no expert in the realms of plumbing but feel that this could be
dealt with myself.

Any help would be much appreciated.

S.