How to make a storm door latch!

[Thor_MN]

8. No...

With the interior door closed, air is trapped between the doors as the storm closes, keeping the storm from latching. Making a vent from this space would allow the air to not be trapped, so the door latches the same way as if the interior door were open.

The down side is that the vent would allow some air circulation when both doors were closed causing some heat loss. I suppose some type of "one way" flap could allow air out of the gap between doors and minimize air circulation, but still prevent the trapped air that causes the storm not to latch.

Or maybe I'm not understanding the problem and the closers are misadjusted/not appropriate for the storm doors weight.