DIYbanter - View Single Post - Double glazing

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). These
frames had a waterproof seal between the outer glass surface and
the frame, which stops water getting to the glass unit seal.

Modern frames have a rubber strip which stops water pouring into
the frame, but doesn't even attempt to be fully waterproof, so
the glass units often sit in a puddle inside the frame, depending
how well constructed the frame drainage is.

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.

--
Andrew Gabriel