"basil" wrote in message
...
On Mon, 28 Mar 2005 21:24:39 +0100, "Doctor Evil"
wrote:

Put in 12" of Rockwool insulation, which is not that expensive. Ceiling
height doesn't matter regarding insulation.

Covering the joists in an old house will cause them to rot from
condensation. Assuming the OP isnt going to put a vapour seal on th e
ceiling then the joists must be left exposed.

Old wives tales. It is normal practice to cover the joists to eliminate
cold bridging. The loft will be vented so that air movement will take away
water vapour.

Condensation only occurs when warm damp air meets a cold surface. The joists
will not be a cold surface.


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