On 2007-12-31 13:40:43 +0000, Richard said:

and why are you insulating the floor
if the loft is to be used for computering,
shouldnt the insulation go above the room?
Thanks. The loft isnt going to be used as a room as such - floor isnt
up to that, I just want to put a noisy PC server up there with
wireless anda small LCD for occassional access, scanning etc., as we
dont have room in the house proper any longer. TIA.

Watch the temperature if you do that. The ambient can easily reach 40+
degrees in the summer, and the internals of the PC up to the 50s.

Ideally, some external ventilation would be good - e.g. add a means of
ducting and fan blowing cooler air from the house to the intakes of the
PC.

As a minimum, make sure that the disk drives are well spaced out and
that there is a fan in the case explicitly blowing air over them.
Lifetime of hard drives is significantly reduced with increasing
temperature and ideally you want to keep them below 50 degrees on the
cover side of the drive.