> Once it's in, even if there are insulating curtains, the heat is still in the house.
While I understand this “once the heat is inside” thing I still can’t help but feel closing the curtains (and blackout curtains) makes a non-trivial impact on the overall daytime temperature of a sun facing room.
I get the goal is to reflect the energy back out and of your curtains are pure black that absorbs all the energy it would, in theory, heat the room as much as just leaving the curtain open but it still intuitively feels like you should close that curtain anyway.
I mean insulation is inside the wall of the house and it keeps the heat out. How is that any different than a set of blackout curtains besides the R value? (Hint: it’s probably the lack of insulating properties in a curtain… though there would be dead air between the curtain and window and dead air is a moderately good insulator itself.
TC should do a video on that. I’d love to see some numbers on the effect curtains have on indoor temperature.
While I understand this “once the heat is inside” thing I still can’t help but feel closing the curtains (and blackout curtains) makes a non-trivial impact on the overall daytime temperature of a sun facing room.
I get the goal is to reflect the energy back out and of your curtains are pure black that absorbs all the energy it would, in theory, heat the room as much as just leaving the curtain open but it still intuitively feels like you should close that curtain anyway.
I mean insulation is inside the wall of the house and it keeps the heat out. How is that any different than a set of blackout curtains besides the R value? (Hint: it’s probably the lack of insulating properties in a curtain… though there would be dead air between the curtain and window and dead air is a moderately good insulator itself.
TC should do a video on that. I’d love to see some numbers on the effect curtains have on indoor temperature.