Does Cavity Wall Insulation really work??

BSPOKE20 · 07-09-2009 12:55pm #1

Hi, thinking about getting cavity wall insulation but can anyone tell me if it makes a real difference to the heat of the house and to my energy bills???

Thanks:)

sydthebeat · 07-09-2009 1:08pm

are you talking about getting an existing cavity pumped?

if the question is simply, does insulation work, the answer is unquestionably... yes.

imeddyhobbs · 07-09-2009 1:12pm

In a nutshell yes.

PeteHeat · 07-09-2009 7:37pm

Hi,

Definitely, my experience of having the cavity insulation upgraded in my own home has been very positive, the difference it made to the north facing rooms was more than expected.

They were the type of rooms that needed the heating on at the slightest drop in temperature and in mid winter were never comfortable, now they are cosy retaining the heat.

I suggest that you download or ask for the IAB data sheets on the products you are considering, they contain a good guide regarding drilling patterns etc.

You might be surprised at the number of installers who try to tell you that its not necessary to drill under window cills etc.

Being cautious I didn't tell the Gent who was doing my house about my intention to do work that involved drilling holes in the finished walls, I have yet to find a spot that was missed.

.

Doctor_L · 08-09-2009 1:53pm

I would recommend cavity wall insulation, the fact that it sealed around our doors and windows means we have a more comfortable house that retains the heat longer.

gizmo555 · 08-09-2009 2:53pm

Doctor_L wrote: »

I would recommend cavity wall insulation, the fact that it sealed around our doors and windows means we have a more comfortable house that retains the heat longer.

Interesting. I just had this done this summer, so haven't yet gone through an autumn and winter with it in place yet. The installer did claim that we could expect some benefit beyond the rated U-value increase on windy days, because the beads would block chilling drafts blowing through the cavity, which the official figures didn't account for. Never thought of it improving sealing around the windows though, and it does make sense.

Mike2006 · 09-09-2009 8:05am

How much does this cost for a typical 1,300 sqft house?

ninjaBob · 09-09-2009 9:01am

Can someone PM some suppliers, I have gone to a few local suppliers and googled around and found 1 major supplier nationally.

I need to order mine this week.

Cheers

gizmo555 · 09-09-2009 9:04am

Mike2006 wrote: »

How much does this cost for a typical 1,300 sqft house?

When I got my 2,000 sqft house done I got a number of quotes for bonded bead in the range €1,100 to €1,400. Yours may be cheaper, but I suppose there are fixed minimum costs associated with sending a truck and crew out. Don't forget cheapest isn't necessarily best. I ended up going with the dearest because having checked him and his product out, he was the one I had most confidence in.

Make sure whoever you go with to check here that the product they are proposing has Irish Agrément Board certfication and that they are properly qualified to install it:

http://www.nsai.ie/index.cfm/area/page/information/CertificateSearch

Bhoypaul · 09-09-2009 1:06pm

there a lot of positive reason for getting cavity wall insulation as outlined above. However be careful that your location and your walls are suitable. Check out the article here:
http://www.askjeff.co.uk

Certain parts of Ireland are not suitable due to the weather conditions and certain wall construcitons in particular non-rendered brick are not suitable.

Does Cavity Wall Insulation really work??

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