A dormer bedroom in my bungalow has plasterboarded stud walls backing onto
unheated voids. I have access to the backs of the walls and want to
insulate them.



My first thought is to fix cellotex panels, cut to size, in the gaps between
the studs.

If I do this, what is the best way to hold the cellotex? Builder's tape or
nailed battons come to mind, but are there are better ways and are there any
special issues related to fire regs?



Alternatively, is there a better way than using cellotex?



Cheers



Steve

Steve wrote:

If I do this, what is the best way to hold the cellotex? Builder's tape or
nailed battons come to mind, but are there are better ways and are there any
special issues related to fire regs?

You just cut it very slightly too large, and it will wedge happily
between the studs.

David

Lobster wrote:
Steve wrote:

If I do this, what is the best way to hold the cellotex? Builder's
tape or nailed battons come to mind, but are there are better ways and
are there any special issues related to fire regs?

You just cut it very slightly too large, and it will wedge happily
between the studs.

And fill any gaps with expanding foam - which can also be used to glue
boards in place.

--
Cheers,

John.

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In article , John Rumm
writes
Lobster wrote:
Steve wrote:

If I do this, what is the best way to hold the cellotex? Builder's
tape or nailed battons come to mind, but are there are better ways and
are there any special issues related to fire regs?

You just cut it very slightly too large, and it will wedge happily
between the studs.

And fill any gaps with expanding foam - which can also be used to glue
boards in place.

Where there's a likelihood of wind howling around (like a dormer :-),
I've put a thick bead of silicone round the inside face of the celotex
before fitting it so there's less risk of draughts next to the warm side
negating the insulation.
--
fred
BBC3, ITV2/3/4, channels going to the DOGs

John Rumm wrote:
Lobster wrote:
Steve wrote:

If I do this, what is the best way to hold the cellotex? Builder's
tape or nailed battons come to mind, but are there are better ways
and are there any special issues related to fire regs?

You just cut it very slightly too large, and it will wedge happily
between the studs.

And fill any gaps with expanding foam - which can also be used to glue
boards in place.

and cover the studs with the special foil tape, to vapour seal
everything - and draught proof too.

"Steve" wrote in message
...
A dormer bedroom in my bungalow has plasterboarded stud walls backing onto
unheated voids. I have access to the backs of the walls and want to
insulate them.



My first thought is to fix cellotex panels, cut to size, in the gaps
between the studs.

If I do this, what is the best way to hold the cellotex? Builder's tape
or nailed battons come to mind, but are there are better ways and are
there any special issues related to fire regs?



Alternatively, is there a better way than using cellotex?

Cheers

Steve
I don't like windows in bathrooms, they are a pain and unnecessary this day
and age, my advice ie to remove it and replace it with a high insulation
panel of some kind not forgetting to build in a fan, then insulate whole
wall as others have suggested.
Don

"Donwill" popple @diddle .dot wrote in message
...
I don't like windows in bathrooms, they are a pain and unnecessary this
day and age, my advice ie to remove it and replace it with a high
insulation panel of some kind not forgetting to build in a fan, then
insulate whole wall as others have suggested.
Don

SORRY, THIS SHOULD HAVE BEEN IN THE THREAD
" Insulating a wall"
Don

The Natural Philosopher wrote:
John Rumm wrote:
Lobster wrote:
Steve wrote:

If I do this, what is the best way to hold the cellotex? Builder's
tape or nailed battons come to mind, but are there are better ways
and are there any special issues related to fire regs?

You just cut it very slightly too large, and it will wedge happily
between the studs.

And fill any gaps with expanding foam - which can also be used to glue
boards in place.

and cover the studs with the special foil tape, to vapour seal
everything - and draught proof too.

Not in this case, as the plasterboard is already in place and the OP's
accessing the studs from behind.

David

"Steve" wrote in message
...
A dormer bedroom in my bungalow has plasterboarded stud walls backing onto
unheated voids. I have access to the backs of the walls and want to
insulate them.



My first thought is to fix cellotex panels, cut to size, in the gaps
between the studs.

If I do this, what is the best way to hold the cellotex? Builder's tape
or nailed battons come to mind, but are there are better ways and are
there any special issues related to fire regs?



Alternatively, is there a better way than using cellotex?

Chicken wire and 100mm rockwool is just as effective. Doesn't look pretty
but you aren't going to look at it.


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)



Cheers



Steve

"Andy Dingley" wrote in message
...
On 3 Dec, 08:21, "Bob Mannix" wrote:

Chicken wire and 100mm rockwool is just as effective.

Possibly, if you include a vapour barrier too.

OTOH, it's also twice the thickness. In many cases this is a sloping
ceiling, which could be the equivalent of making the room 3" smaller.

Ah - you (the OP?) said stud walls - the rockwool goes between the studs
which are there anyway, so no encroachment on the room. For a roof, there
has to be airflow between the rafters so Celotex. Personally I believe the
whoile vapour barrier thing to be a bit of an urban myth, YMMV


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)