wrote in message
ups.com...
Our house has about 4" original loft insulation between the joists
(some yellow fibre glass stuff) and about 6-8" top-up insulation laid
perpendicular to the original. The extra stuff is the Pink Panther
white fibre glass (?) inside a perforated pink plastic bag.

The problem is that condensation is building up inside the plastic
sheeting and saturating the white insulation, there doesn't appear to
be any dampness underneath. The loft appears to be reasonably
ventilated, certainly I can see daylight all around the eaves.

Short of debagging the Pink Panther stuff which is probably a nasty
job, is there anything else I should consider?

Is there any moisture on the underside of the roofing felt? I didn't venture
into my loft for a couple of years and when I did I found water literally
dripping off the roof felt and all the stuff stored up there was going
mouldy. Turned out the boiler was pumping over into the loft tank which was
therefore full of hot water all the time. The evaporation off this was
making the whole loft damp. I fixed the pumping over problem and after a
short while it was dry as a bone up there again.
--
The internet. It's not a big truck.
It's a series of tubes.
Dave Baker