Mounting the glasses

Mounting the glasses is not difficult. You just need to be very precise as glass is totally rigid and thus almost zero tolerance is allowed. This is just a step-by-step list to integrate the official instructions

1. Mark the "free corners" on the window frame
2. Unmount the window frame
3. Place the glass on the frame centering it on the marks
4. Mark the holes where the metal plaques (beslag, hengsler) are going to be placed
5. Mark the holes to fasten the plaques on the frame
6. Drill a 2mm hole for the screws holding the plaques and a 5mm hole for the screws holding the glass
7. Place the distance-holders on the frame at regular intervals
8. Screw in the plaques without tightening them (so you will have some tolerance for the next step)
9. Fix the glass on the frame with the given screws (stormkrok, anverfere)
10. With the glass in place tighten the screws holding the plaques
11. Tighten the screws holding the glass
12. Place the window frame back. In case the window frame is too heavy, you can first put it back without Optoglas and then put back Optoglas once the window is in place

Energy saving 2: the first confirmation

-electricity consumption November 2009 3285 kwh
-electricity consumption November 2010 3025 kwh (roughly 9% less)

And on top of that, last year it was only the two of us leaving in the house whereas we are three this year (including the tenant). Factoring that in, the real saving is wider than figures would show. Not to mention that Nov10 has been colder than Nov09!