> Can sliding windows be properly insulated?
replyYes. Beyond that, if they didn't work they wouldn't be used. Continental climates get much colder than pretty much anywhere in Europe, outside of a select few areas.
> In general cold is a bigger deal in Europe than warmth, and will continue to be so.
Masonry is a bad match for cold. The structure acts as a high velocity heat conduit and the earth eats all the heat you produce. Europe's winters (in general) are extremely mild, arguably even more so than its summers.
> Yes. Beyond that, if they didn't work they wouldn't be used.
replyMy usual experience from London was extremely leaky single pane sliding windows, that's why the question. To be fair, that air flow was probably the only saving grace against mold in those buildings.
The old sliding windows were shit, but the modern ones are pretty good.
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