I have screened bottoms on my hives, but there is an oil tray underneath the screen, then a solid bottom below that.
The hatch for oil tray access is closed, effectively turning the screened bottom into a solid bottom. The oil tray kills anything that falls through the screen, otherwise but doesn't change the ventilation/airflow dynamics.
My suggestion is to leave your closure board in place on a more or less year round basis.
The hatch for oil tray access is closed, effectively turning the screened bottom into a solid bottom. The oil tray kills anything that falls through the screen, otherwise but doesn't change the ventilation/airflow dynamics.
My suggestion is to leave your closure board in place on a more or less year round basis.