"The Natural Philosopher" wrote in message
...

Going to IMMlike levels of insulation

Not mine. Experts on the topic conclude this.

only works if you can stop up each
and every one of these micro draughts:

I have always said caulk every hole into the loft: around pipes, cables,
etc. Also fit a vapour barrier on the loft floor, stapling down, then put
insulation over.

I sometimes wonde if much more limited ventialtion, and an electrical
dehumidifier in the loft might not be a more energy efficient way to
keep a cold roof dry, and allow the loft airspace itself to become an
insulator...

I have always though that may be beneficial. Seal up all vents and install
one. The BCO would not like at, as if the de-humidifier fails you have
problems. An accurate humidistat would need to be fitted to reduce running
costs. There again install a vapour barrier on the loft floor to prevent
vapour getting in.




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