On Friday, November 2, 2012 11:02:02 AM UTC, codek wrote:
You've insulated the loft. Presumably the room below is heated so no loss there.
That leaves windows, draughts and walls.
Windows: Usually the biggest loss. Adding a 3rd layer in framed glass, acrylic
or plastic film would reduce losses.
Walls: I'm not clear how you can know it has no cavity without knowing what
material is used. Options are:
1. CWI is the best option if it does turn out to have a cavity
2. Exterior insulation under render is the next best bet if already rendered
3. Interior insulation board is the last option, typically used where exterior
character rules out render. PIR board then plasterboard is cheaper, but wastes
half an inch depth. Hard faced PIR board costs more but doesn't waste any space.
There are other options occasionally used, but those are the 3 to look at.
On Nov 2, 7:06 pm, firstname.lastname@example.org wrote:
I think the OP needs to take on board what has been said here but also
consider quite why this room, with its two external walls, is so
cold. If it is any normal house then nearly all the larger rooms will
have two external walls !! There must be other rooms in the house
that are similarly configured so there must be some specific reason
why he considers this room worse than the others, and see if he can
On Sat, 3 Nov 2012 10:52:34 -0700 (PDT), robgraham wrote:
Not in a "traditional semi" the larger rooms share the party wall one
side and internal walls the other side and room rear. They only have one
external wall. The corner rooms(*), do have two external walls and are
colder. I should know my childhood bedroom was the small corner bedroom
in a 1930's semi...
(*) Normally hall way/stairs and kitchen downstairs, bathroom and small
I don't know if it applies to the OP, but north facing rooms are often
colder than south facing ones. Short of rebuilding the whole house on
an enormous turntable, there's not a lot you can do to address that....
(Actually I have wondered about heat pipes between a couple of our rooms.
It makes no sense that they are on the same underfloor heating zone, but
changing that means ripping up more floor than I want to....)
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