Here’s a first idea of what windows we’ll have, and how they will open.
The opening lights are shown with a red chevron. I’m planning to ask for quotes for “Euro” style tilt-and-turn windows, and regular casements. Even if we just get casements, Hilde is very keen that they should open inwards, since it makes cleaning them so much easier. I’ve tried to keen the number of opening lights to a minimum, in order to keep the cost down.
Windows B and E are show with top-hinged upper casements. If we get tilt-and-turn windows, then these lights can just be fixed.
Window I is a sliding/folding door with a level threshold.
(The side-elevation isn’t very accurate, but it’s good enough to show the window design.)
Have you seen the English Heritage documents on secondary glazing? They’re mostly targetted at people who might be replacing original windows in historic houses with uPVC horrors but it looks a simple way to add even more insulation to modern windows. (I will reply to your email about sensors soon, BTW!)
http://www.english-heritage.org.uk/publications/eehb-secondary-glazing-windows/
http://www.english-heritage.org.uk/publications/draughtproofing-and-secondary-glazing/
@Asher – yeah, I think double glazing plus secondary is pretty standard in Finland. Triple glazing is probably a bad idea on half of the windows, as it cuts down on potential solar gain. The front of the house is dingy though, so I’m considering triple glazing there. And you’re right, secondary glazing must be an option.
Actually the house currently *has* secondary glazing, and it’s pretty unpopular with my Dad (who lives with it) and with Hilde (who’s concerned about how hard it is to keep clean).
On the subject of cleaning, have you seen this article, from New Scientist some years ago:
http://www.anapsid.org/slugcleaner.html