On Fri, 17 Sep 2004 10:32:15 +0100, "Rosie" wrote:

Hello,

I've got a conservatory on one side of my house (1960's council-build
semi-detached).

A company has looked at the house and said that it isn't possible to do the
cavity wall insulation without scaffolding. Furthermore, it isn't possible
to insulate only two walls of the house because condensation will develop in
the third, uninsulated wall. We aren't prepared to pay for scaffolding.

This is the back of my house:

/ roof |
/__________________________|
| | | | | | | | | | |
| ----- ---- ---- |
|-----------------------------------| NEXT DOOR
_____| |
flat | |
roof | conservatory |
utility | |
room | |
------------------------------------------

1) Why isn't it possible to insulate 2 walls? How can condensation be a
problem with insulating two walls, and yet it is possible to insulate half
of a semi-detached house?

If you insulate two exterior walls, have a party wall and an
uninsulated exterior wall, the last of these is likely to be the
coolest assuming your neighbour heats their property.

So, if there is moisture in the air, it is going to tend to condense
on the windows and on the uninsulated wall.

Whether it does, will partly depend on insulation.

It would be better to insulate all the walls, but is not the end of
the world if you can't.



2) Why can't the installers just drill through the interior wall of the back
bedrooms to install the cavity wall insulation? We've not got wallpaper or
anything difficult to re-decorate.

I see no reason why not, but can understand that they wouldn't want to
climb on the conservatory without scaffolding.



I've got another surveyor coming round next week to talk about it, but I
wanted some info before I hassled him.

Thanks in advance for help!
ROSIE






..andy

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