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?

Simon wrote:
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?

Leaving the plasterboard there, covering it with 50mm kingspan, put new
plasterboard over it.
This is of course both more expensive, and will take up more room.

Simon wrote:
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?

without spending a fortune on rigid insulation, you have little choice other
than to do as above...do you mean between house and loft or between loft and
outside?

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?"

Hugo Nebula abuse@localhost wrote:
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.

With a suitable escape window, and fire alarms, I don't really see an
issue.

If it was me, I'd be looking at 25mm airgap, 50-75mm fiberglass against
the rafters, and lots of ventilation at the ridge and bottom - 10mm gap
or so.
Then 25mm kingspan under that, properly taped up to make a vapour
barrier.

If I was being cheap, 100-120mm of fiberglass, with slices of 50mm kingspan
along the joists, to extend them out, reduce their heat leaks, and
provide extra space for cheap fiberglass, then plasterboard,
again with a proper vapour barrier.