On Sun, 16 Apr 2006 06:20:34 +0100, The Natural Philosopher
wrote:

Tournifreak wrote:
Mike Halmarack wrote:
On Sat, 15 Apr 2006 15:03:54 GMT, "Mark" wrote:

Mike Halmarack ... wrote in message
...
To lag these pipes properly would mean pulling up a lot of
floorboards.
Does there really need to be quite so many air bricks allowing such a
cold draught in a floor of this type, at this level?
Yes, unless you want to kill your house and yourself
Google "blocked air bricks" and "health risk damp spores"
Thanks for the cautionary tips. Maybe there's a moderated air flow
achievable the will have the required anti-damp damp effect, without
carrying away quite so much heat. Perhaps an adjustable louvered vent
in place of the fixed louvres.

I don't get it. Very few houses have airbricks at first floor level.
But a few do around this area. So why is it necessary for some houses
and not for others? Was it just a short-lived idea sometime in the
early 20th century? I'm sure someone on here knows...

Jon.

What do you mean by 'first floor level

In US terms thats ground floor level

I was hoping that in the UK it would mean the floor above the ground
floor.

If you are talking in terms of between lower and upper storeys, i.e.
well above ground, there is no point in ventilating at that level unless
there is some specific unique damp problem.

There isn't one of those.


Cavity walls need some venting allegedly, but that need not extend
inside the floor structure.

That's what I thought

chances are the joist are laid into the inner wall leaf and simply have
random gaps around them.

There may be gaps somewhere but where I can see them the joist ends
are close jointed to a timber wall plate, which, if countinuous, would
pretty much air seal them.

Plug the gaps, or stuff the floor with rockwool.

If I was happy to pull up the tongue and groove flooring to do that
I'd have no real problem there. i realise that I wouldn't have to pull
it all up but I'd like to keep damage to the structure to a minimum.

I've pulled up some boards for plumbing purposes though and modified
the method of cutting the tongues that I read on this NG, so maybe
I'll mention it in another thread.
--
Regards,
Mike Halmarack

Drop the (EGG) to email me.