> Double and triple glazing of windows and doors prevents the
Why do you think double and triple glazing prevents the leakage better
than single glazing? Does air penetrate glass?
> These days, the glass in double glazing can be specially tempered and often
> an inert gas is now used to help keep cold air out during winter and
> preventing hot air getting in along with preventing infra red radiation.
Inert gas and tripple glazing serve noise insulation as far as I know.
Infra red radiation is handled by Low E film for windows. But at 10C
temperature difference (NZ) the heat leakage by Infra red radiation is