Best ventilation is open soffit venting to a open vented ridge vent.
Leave attic windows open in winter.
We leave ours open all the time but still alot of condensation on our window.
If there are other ventilation sources such as eave and ridge vents then the window vents would be for summer use to disipate.
Leaving the windows open is a good idea as long as you are home.
I leave the windows wide open upstairs all day and only shut my girls bedroom window at night now as it s freezing.
It allows air movement and will naturally exhaust the hot attic air.
And the extra heat is not just a summer concern come winter hot attic air can melt snow on the roof during the day only to refreeze when temperatures drop overnight creating ice dams that lead.
We have a large full attic.
I ve also got a little dehumidifier on the window sil which works quite well.
It gets stifling and stale up there if we don t.
Insulation at least r 38 or more is there for heating and.
6 windows in all.
The windows have screens.
It can do both.
2 are ornamental and the other 4 are regular functioning windows.
We do get bugs flies in the summer ladybugs in the fall.
It depends upon what other type of ventilation the attic has if any.
Open your windows in winter for the good of your family s health.
One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home.
My only suggestion is to have 2 awnings made to fit over and.
Recirculating old stale interior air can cause a host of symptoms.
Instead it will merely cause a build up of moisture and heat that can cause other more troubling conditions in your home come spring.