sav wrote:
Recently moved into our home and are doing up the original attic
room. I am unsure as the best way to insulate this area? The house is
a mid terrace and the room Measurements are approx 5.5m x 6m with
pitched roof that is 3m high at the apex sloping down to 1.35m at room
edge. Am i best to insulate under the attic floor in between the
joists and also try to insulate the sloping ceilings or just do one of
these. Im not sure what products would be available for insulating
the ceilings, but have heard that there is a plasterboard called
kingspan which contains insulation. Any suggestions as to what would
be the best optionts would be much appreciated


Having just insulated a Victorian attic, I'll tell you what I wish I'd
done from the start. Rip down the ceiling. Rip down any walls where you
don't have comfortable access from the other side. Put 50mm Celotex
between rafters, and rockwool between joists on the walls (if you want
to keep the cost down). Plasterboard and skim.

I sort of did this but tried to retain as much of the original plaster
as possible by feeding the insulation in from all kinds of crazy angles.
I should have bitten the bullet, but the mess is just so awful that you
really must do the whole thing in a day so you can clear up just the
once. Doing it in dribs and drabs as I did, you spend an hour knocking
off the plaster and two hours clearing up. Then another two hours
clearing up yourself, your tools, your vehicle, your own house. Never
again, even for family!

If you can afford to lose space on the inside, it's obviously much
easier, but the impact on doors and window openings has to be
considered. Maybe you don't have lath and plaster to contend with.
Taking down PB would have been a doddle in comparison