Storm Doors on interior-grade doors

[Kendra]

I have a client who recently had to remove the enclosure from her sunroom, converting it into an exterior space. She currently has two interior-grade doors leading to this area and wants to install storm doors over them instead of replacing them with proper exterior-rated doors to save on costs.

I have concerns about durability, insulation, moisture and energy efficiency. Has anyone encountered a similar situation? a couple of contractors have recommended this approach, so I wanted to reach out to the design community for advice.

 

[SCBO1]

May want to check with the AHJ to see if there are requirements for jamb reinforcement to prevent kick-ins and dead-bolt lock upgrades.

 

[steveray]

If the interior doors are now exterior doors, then they need to meet exterior door requirements...

 

[Kendra]

May want to check with the AHJ to see if there are requirements for jamb reinforcement to prevent kick-ins and dead-bolt lock upgrades.

Thank you!

 

[Mr. Inspector]

I don't see how it will comply with the energy code.