On 16 Sep, 13:57, Bob Minchin
wrote:
geraldthehamster wrote:
On Sep 15, 9:56 pm, The Natural
wrote:

Better is to cover the insulation with something windproof.

Agreed, and to increase it to at least 300mm.

Cheers
Richard

Something breathable would be better than ordinary plastic sheet to
reduce the risk of condensation forming and eventually rotting the
ceiling rafters.

Bob

That's probably true. Having said that, in an ideal world one would
have a vapour barrier underneath the insulation, to stop warm moist
air rising into the loft space from the house.

Cheers
Richard