On Thu, 27 Jul 2006 16:07:14 +0100, "Christian McArdle"
wrote:

| It can reduce the amount of natural parasitic ventilation below a safe
| level for an open flued appliance.
|
| Can we have that in English, please?
|
|You might be still alive because the room is getting air through holes in
|the cavity wall (probably below floor level). When you fill the cavity wall
|with foam, those holes will be blocked, the air won't get to the fire and
|you will die a slow and lingering death.

Which is what I said in simpler terms in another post.
Thanks :-)
--
Dave Fawthrop dave hyphenologist co uk Google Groups is IME the *worst*
method of accessing usenet. GG subscribers would be well advised get a
newsreader, say Agent, and a newsserver, say news.individual.net. These
will allow them: to see only *new* posts, a killfile, and other goodies.