chudford wrote:
I thought that all modern houses had to have cavity wall insulation.

However my neighbour has found that their 8 year old house does not
have cavity wall insulation. Apparently the builders (Redrow) were
able to get away with using just thermalite blocks and no cavity wall
insulation.

We are now planning to have the insulation installed, but what were
the regs 8 years ago and should Redrow have been allowed to get away
with not installing cavity wall insulation?

Incidently we thought the house was a bit cold and the heating bills
high.

There has never been a requirement to install CWI on any building - the only
requirement is that the wall must meet certain levels of heat retention,
this can be acheived by using thicker thermalite blocks and having them dry
lined.

I'll wager that the walls in your house are about 350mm wide - 100mm outside
brick, 75mm cavity and 150mm inside block...the reamaining 25mm will be
drylining.

Why housebuilders go down this route is beyond me - the cost of the thicker
blocks far outweighs the price of having regular blocks and CWI


--
Phil L
RSRL Tipster Of The Year 2008