"geraldthehamster" wrote in message
...
I have some quite large timber-framed casement windows in the front of
my house. As the frames are in serviceable condition, I had wondered
about replacing the glass panes with double-glazed units, in the same
frames, as a less expensive alternative to having the entire windows
replaced. I think the frames are deep enough. Has anyone done this?

We did the whole of our house over abou five years, that way we didn't
notice the cost at all. The oldest have been in place for about fifteen
years and there have been no problems at all.

The rooms certainly are more comfortable. Before we had them we used
secondary dg, that was nothing like as effective and it was a real pain
because of dirt and insects getting between the glass panes.

Would I simply bed the units into the rebate, in glazing silicone or
similar, put some beading over, and job done? How thick are today's
standard DG units? Can one get them made to measure? Who makes them,
and how much do they cost?

We gave measurements to our local commercial glazier, the factory sealed
units, made to measure, were always ready for collection next day. They were
not expensive but I can't remember actual costs right now, also all our
windows were different sizes. Spouse did the work, occasionally I'd help him
ease a unit into position from inside if he were up a ladder.

The greatest advantage over this system is that you're not cutting down the
light as happens with commercial plastic dg frames. You can do it to your
own timetable and as funds are available. You have to look closely to see
that they're not the original glazing. Also, you end up with several old
panes to use as garden cloches :-)

I've searched the archives, but couldn't find anything on this.

I'm surprised about that - I've been banging on about it for a very long
time :-)

Mary