In message , Andrew Gabriel
writes
In article ,
(jacob) writes:
Some reasons the outside seal might break a
Not so much why they 'might' break more why they 'will' break -
they're all doomed!
Double glazing is highly obsolescent and not very cost effective, if at all.
The first double glazing in my house had only a single failed unit
after some 25 years, and I think that was because a potential
burglar tried to lever it out at some point (and failed).
We have some DG hardwood patio doors/windows. I'm not sure of the age
but at least 20 years old, quite possibly more. We do now have a couple
of failed units, but I don't feel the age they ahev lasted is that bad.
Esp. as I don't think the design of the frames is that good (the DG
units are not bedded into very much sealant, or in drained frames unlike
more modern windows tend to be.
I certainly wouldn't argue with it not being cost effective --
just about any other energy conservation method has a shorter
payback period, and usually very much shorter.
Indeed, replacing windows just to get DG doesn't make sense, but there
are good reasons for replacing single glazed windows with DG if the
windows need replacing anyway.
No significant condensation, and much more comfortable rooms are two
benefits we had from replacing the old single glazed bay windows with DG
ones last year.
--
Chris French, Leeds