Specify the door, frame, locks and hinges as one tested assembly
The door is the weakest point of most safe rooms. Buy a door assembly that has been tested as a whole, not a strong door in a weak frame.
How
- For a storm room, FEMA and ICC 500 require the full door assembly (door, frame, locks, hinges and anchors) to be tested and labelled by an approved lab to the same pressure and debris criteria as the walls (US). Check the label shows the lab and test standard.
- Hurricane-rated doors need both static and cyclic pressure tests (US guidance).
- For intrusion delay, look for a doorset tested to a recognised attack standard in your country. In the UK, PAS 24 is the reference standard for door security; other countries use other standards, so ask your supplier for test certificates.
- Make sure the door can always be opened from inside without a key, so occupants can get out after the danger passes or in a fire.
- Fix the frame into the structural walls with the anchors specified by the door maker and the engineer. Out-swinging and in-swinging doors can both be certified; choose one debris cannot block.
- Do not add unlisted locks or bolts that were not part of the tested assembly; they may not be tested and may weaken it.
Safety: A door that cannot be opened from inside is a deadly trap in a fire. Always keep a manual inside release.
Do these first
Sources
- Safe Rooms and Storm Shelters (Building America Solution Center). US DOE / Pacific Northwest National Laboratory, accessed 2026-11
- FEMA P-320 Taking Shelter from the Storm: Building a Safe Room for Your Home or Small Business (6th ed., 2nd issuance). US Federal Emergency Management Agency (FEMA), accessed 2026-11
- ICC 500: Standard for the Design and Construction of Storm Shelters (summary of the 2014 edition). Ready.gov / FEMA, accessed 2026-11