Casa2
ed @ EcoClassic
Miglas Windows
Argon should be possible soon for less than 50$ if you have the right supplier.
If by this you mean the extra for Argon, it should be less than $10/m2.
Ed
Beauty. My sliding windows are just under 4 m2 each, so I'll be able to upgrade each of the 9 sliding windows for less than $50 each. This should bring the 8 mm gap for the sliding windows up to the same thermal performance as the other windowes which have a 12 mm air gap (from the graph you provided Ed).
It's all coming together
Thanks for your help Ed, Kris, windowexpert, et al.
Welcome,
A local Vic supplier does Argon as std... no premium.
Ed