A fire door only works when it is closed.
That sounds obvious. It is also the rule most often broken with a door wedge, a shoe, or a brick.

What the door is for
In a Housing and Development Board (HDB) block, your main door is part of how the building keeps fire and smoke in one place. HDB says fire-rated entrance doors come with a door closer — a self-closing safety device that must not be removed. The closer keeps the door shut so the door can contain fire and smoke inside the unit instead of letting them run into the corridor.
SCDF’s Fire Code 2023 says the same thing in engineering language. Fire doors must carry an automatic self-closing device that can shut the door from any angle and against its latch. The door is there to protect the opening. Left open, it is not doing that job.
Official references:
- HDB — Fixing gate and door issues (door closer must not be removed)
- HDB renovation guidelines — Building works (fire-rated main door on an escape route needs a self-closing device)
- SCDF Fire Code 2023, Clause 3.9.2 — Fire doors
Why a wedge defeats the door
Compartmentation is the idea that fire and smoke should stay in one compartment long enough for people to get out and for responders to work. A closed fire door is the movable part of that barrier.
Propping the door with a wedge, shoe, carton, or brick holds that barrier open on purpose. The closer cannot finish its job. Smoke and heat take the corridor. Neighbours lose time. So does anyone still trying to reach the stairs.
If the closer is noisy, slamming, or sticking, adjust or repair it. Do not defeat it with a wedge.
If you need the door held open often
Some doors genuinely get in the way of day-to-day movement. The Fire Code allows a fire door to be held open only with approved hardware: a fusible link, or an electromagnetic or electromechanical retainer that releases when smoke is detected, when the building alarm sounds, or when power fails, so the door can close on its own.
A shoe is not that hardware. Neither is a brick.
If your household or management needs a door held open regularly, the proper path is an approved automatic-release retainer installed as part of the fire door system — not a homemade prop. Ask a qualified fire-safety contractor or your town council / managing agent what is approved for that opening.
Three moves that keep the door honest
- Remove the wedge. Clear shoes, cartons, and bricks from the door swing.
- Let the closer do its job. The door should shut and latch on its own after you pass. If it does not, get the closer checked.
- Keep the corridor free. Do not park prams, plants, or storage against a fire door or in the escape path.

The extinguisher
An extinguisher is for a small fire in your own home when you have a clear exit behind you. It is not a reason to leave a fire door wedged open “just in case”. A closed door buys time. A propped door spends it.
If there is a fire
Shout. Get everyone out if the way is clear. Close the door behind you so the fire stays in the unit. Use the stairs, not the lift. Call 995 from a safe place. Do not go back for a phone.
Get out. Stay out. Call 995.
Quick answers
Can I prop my HDB fire door open with a wedge or shoe? No. A fire door only works when it is closed. A wedge defeats the self-closing device and the compartmentation the door is meant to provide.
Why does my main door have a closer? HDB installs the closer so the fire-rated door shuts on its own and can contain fire and smoke. It must not be removed.
What if the door is always in the way? Use only an approved automatic-release retainer that closes the door on smoke detection, alarm, or power failure — not a homemade prop. Get proper advice for that opening.
My closer slams or does not latch. What should I do? Have it adjusted or repaired. Do not wedge the door open as a workaround.
Does keeping an extinguisher mean I can leave the door open? No. An extinguisher is for a small fire in your own home with a clear exit. It does not replace a closed fire door.
What do I do if there is a fire? Get out if the path is clear. Stay out. Call 995. Use the stairs, not the lift.