As the price of heating has increased, I have started to think about Cavity
wall insulation again.
I have previously been put off the idea due I always thought that you needed
the air gap to prevent damp,
therefore filling the gap with rock wool may cause damp.

Does any body have any ideas as to the problems that can occur ?

As it does seem a no brainer as it will only cost about 200 pounds and this
can be saved in one year.

On Sun, 25 Sep 2005 07:51:48 GMT, wrote:

| As the price of heating has increased, I have started to think about Cavity
| wall insulation again.
| I have previously been put off the idea due I always thought that you needed
| the air gap to prevent damp,
| therefore filling the gap with rock wool may cause damp.
|
| Does any body have any ideas as to the problems that can occur ?
|
| As it does seem a no brainer as it will only cost about 200 pounds and this
| can be saved in one year.

Every bit of insulation I have ever installed has paid for itself many
times over in mumble years.

Foam insulation still looks good after ?30? years, with zero problems, damp
or other, in c50 year old semi.

--
Dave Fawthrop dave hyphenologist co uk
The London suicide bombers killed innocent commuters.
Animal rights terrorists and activists kill innocent patients.

wrote:
As the price of heating has increased, I have started to think about
Cavity wall insulation again.
I have previously been put off the idea due I always thought that you
needed the air gap to prevent damp,
therefore filling the gap with rock wool may cause damp.

Does any body have any ideas as to the problems that can occur ?

As it does seem a no brainer as it will only cost about 200 pounds
and this can be saved in one year.

i'd recomend it. my 1950's semi was done 6 years ago and the difference it
made to the heat retention of the house was very noticable.

steve

On Sun, 25 Sep 2005 10:15:53 +0100, "r.p.mcmurphy"
wrote:

| wrote:
| As the price of heating has increased, I have started to think about
| Cavity wall insulation again.
| I have previously been put off the idea due I always thought that you
| needed the air gap to prevent damp,
| therefore filling the gap with rock wool may cause damp.
|
| Does any body have any ideas as to the problems that can occur ?
|
| As it does seem a no brainer as it will only cost about 200 pounds
| and this can be saved in one year.
|
| i'd recomend it. my 1950's semi was done 6 years ago and the difference it
| made to the heat retention of the house was very noticable.

What happens is that the inside skin of the wall gets warm, and when the
central heating switches off at night, the inside skin of the wall
radiates/convects heat back into the room. This works better with old
heavy breeze blocks than with the more modern lightwieght cement blocks.

--
Dave Fawthrop dave hyphenologist co uk
The London suicide bombers killed innocent commuters.
Animal rights terrorists and activists kill innocent patients.

As it does seem a no brainer as it will only cost about 200 pounds and this
can be saved in one year.

The Rockwool that was blown into my semis cavity walls was allegedly
coated to prevent water tracking across it.

Dave

I happily paid £ 600 and have had it done in every house I have lived in. It
makes a huge differance to the comfort and heating costs in the property
with no signs of damp at all

wrote in message
news
As the price of heating has increased, I have started to think about
Cavity
wall insulation again.
I have previously been put off the idea due I always thought that you
needed
the air gap to prevent damp,
therefore filling the gap with rock wool may cause damp.

Does any body have any ideas as to the problems that can occur ?

As it does seem a no brainer as it will only cost about 200 pounds and
this
can be saved in one year.

wrote:

As the price of heating has increased, I have started to think about Cavity
wall insulation again.
I have previously been put off the idea due I always thought that you needed
the air gap to prevent damp,
therefore filling the gap with rock wool may cause damp.

Does any body have any ideas as to the problems that can occur ?

As it does seem a no brainer as it will only cost about 200 pounds and this
can be saved in one year.

Yes, but do it properly.

It makes a lot more difference than you might think, assuming of course
that you ahve the ventilation and draughtproofing under control FIRST.

wrote:

Does any body have any ideas as to the problems that can occur ?

The ones you normally hear about are often the result of poor
workmanship. Not managing to get a complete fill so that you are left
with uninsulated cold patches that then cop for the bulk of the
condensation etc. There have also been some cases with people having
adverse reactions to some of the chemical foam type products that they
used to use. Not heard of many cases like that recently however.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/