On Fri, 15 Dec 2006 15:37:34 GMT, a particular chimpanzee named
"Simon" randomly hit the keyboard and produced:

What is the easiest way to improve loft insulation, where the loft has been
converted to a room.

Is there a simpler way than removing the plasterboard, inserting rockwool
insulation, and reboarding?

Aside from the fact that you shouldn't remove the plasterboard, insert
Rockwool and reboard. You need to maintain a ventilation space above
the insulation of 50mm; Rockwool between the rafters is a relatively
poor insulator; and most illegally converted lofts will have had the
plasterboard fixed directly under the 3" or 4" rafters, meaning that
you probably only have enough space for 25mm-50mm insulation between.

The best way to improve the insulation is to take off all the
plasterboard from the walls, take up the floor, remove any stairs, fit
a loft hatch, and then put about 300mm Rockwool between the ceiling
joists. This will also have the advantage of removing a death trap.
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"