The sealed units in my 20-year old wooden window frames have clouded and need replacing.
I did the worst (all those on my south facing wall) maybe 5 years ago using non k-glass units. Should I now use k-glass units on the others?
Relevant factors may be
1. K-glass units cost almost 30% more.
2. In only one room are there units that have been and others that need to be replaced (on different walls), so coatings are unlikely to be visually noticeable.
3. The frames take 4-6-4 units. I vaguely remember once see a table on the benefits of k-glass with different gap widths, but can't find anything now.
Has anyone any advice?
John
I did the worst (all those on my south facing wall) maybe 5 years ago using non k-glass units. Should I now use k-glass units on the others?
Relevant factors may be
1. K-glass units cost almost 30% more.
2. In only one room are there units that have been and others that need to be replaced (on different walls), so coatings are unlikely to be visually noticeable.
3. The frames take 4-6-4 units. I vaguely remember once see a table on the benefits of k-glass with different gap widths, but can't find anything now.
Has anyone any advice?
John