Hi
we have an internal soil pipe and internal open vent - well it runs
internally into the loft where it then exits through a ridge tile.

Its the one in the foreground here (the pipe in the background comes from
an extractor fan in the main bathroom and exits through another ridge tile.

http://www.zen107481.zen.co.uk/loftpipes.jpg

It has always dripped a little water from the joins - it has not been
solvent welded but just pushed together. Now I have upgraded the loft
insulation it is leaking water constantly. I am assuming that this is
condensation from moisture laden air inside the pipe. Should I just buy a
load of solvent weld and sort out these joints ???? - I am quite confident
to do do solvent welds up to 50mm pipe but these have 2 fixed ends so I
dont want to bugger it up :-) I have tried taping up the joins but water is
still weeping out both down the outside of the pipe and dripping from the
bend. There is plenty of ventilation in the (blows a gale).
--
(º€¢.¸(¨*€¢.¸ ¸.€¢*¨)¸.€¢Âº)
.€¢Â°€¢. Nik .€¢Â°€¢.
(¸.€¢Âº(¸.€¢Â¨* *¨€¢.¸)º€¢.¸)

On Mon, 14 Nov 2011 16:15:20 +0000, Ghostrecon wrote:

It has always dripped a little water from the joins - it has not been
solvent welded but just pushed together. Now I have upgraded the loft
insulation it is leaking water constantly. I am assuming that this is
condensation from moisture laden air inside the pipe. Should I just buy a
load of solvent weld and sort out these joints ???? - I am quite confident
to do do solvent welds up to 50mm pipe but these have 2 fixed ends so I
dont want to bugger it up :-) I have tried taping up the joins but water is
still weeping out both down the outside of the pipe and dripping from the
bend. There is plenty of ventilation in the (blows a gale).

They're pushfit elbows and if they're leaking, just replace them - the
rubber seals in them are shot.

On Mon, 14 Nov 2011 16:52:04 +0000, Grimly Curmudgeon wrote:

On Mon, 14 Nov 2011 16:15:20 +0000, Ghostrecon wrote:

It has always dripped a little water from the joins - it has not been
solvent welded but just pushed together. Now I have upgraded the loft
insulation it is leaking water constantly. I am assuming that this is
condensation from moisture laden air inside the pipe. Should I just buy a
load of solvent weld and sort out these joints ???? - I am quite confident
to do do solvent welds up to 50mm pipe but these have 2 fixed ends so I
dont want to bugger it up :-) I have tried taping up the joins but water is
still weeping out both down the outside of the pipe and dripping from the
bend. There is plenty of ventilation in the (blows a gale).

They're pushfit elbows and if they're leaking, just replace them - the
rubber seals in them are shot.

I've pulled off the one on the left and there are no rubber seals or any
grooves for them - I thought there would be because of the 2 ridges but
they are smooth.
--
(º€¢.¸(¨*€¢.¸ ¸.€¢*¨)¸.€¢Âº)
.€¢Â°€¢. Nik .€¢Â°€¢.
(¸.€¢Âº(¸.€¢Â¨* *¨€¢.¸)º€¢.¸)

On Mon, 14 Nov 2011 16:58:20 +0000, Ghostrecon wrote:

They're pushfit elbows and if they're leaking, just replace them - the
rubber seals in them are shot.

I've pulled off the one on the left and there are no rubber seals or any
grooves for them - I thought there would be because of the 2 ridges but
they are smooth.

Strange design then. In that case, if they're a snug sliding fit you
could glue them - soil pipe will glue ok, but get the position right
first time, no second chances.