DIY & Home Improvement

If the interior door is shut, the storm door will not shut all the way due to the air pocket remaining in the space between the two doors. You will have to give it a gentle push to get it to catch on the latch. So not only you and everyone in your household have to do this....so will anyone who comes to your home and opens that door. So it could even be a solicitor and you not be aware your door is ajar. Failure to push it shut so it will latch means the door remains slightly ajar and may result in the wind catching the door.
If the interior door is open, like when you are answering the door and you are holding the main door open...the storm door will latch just fine.

If you adjust the storm door to make it so it will latch when closing without giving it an extra push, the door will slam instead if the interior door is open. It has to do with the vacuum of air which is between the two doors.

A wind chain will probably keep the door from having the hinges bent backwards from a strong gust of wind.

I hope I explained it right. Basically there are several spots where the door speed can be adjusted. It is just when they made the door shut "harder" so I would not have to give it a push to make sure it closed and fully latched, the door would slam. This made me nervous that the glass might shatter. Again, it has to do with the vacuum or cushion of air in between the two doors.

The custom storm doors I have on my own home have been there awhile, but they never had this closing issue. I plan on having a a couple of other companies come out and see what happens.

Best of luck!