Barricade the Door at a glance
| Day 3 | Brace the entrance |
| First piece | Couch, dragged to the marked position |
| Extras | More furniture; a chair jams the handle |
| Game's hint | Furniture braces hold far better than a lock alone |
| Day 8 | Repair and brace the door before night |
| Day 14 | Brace with furniture and boards before a crowd arrives |
The order we saw
Check the peephole when the corridor warning appears, drag the couch to the marked spot, then pile on furniture. The attack follows; afterwards the objective says rest and repair.
The braces need upkeep: Day 8's objective is to repair and brace the door before night, and Day 14 mentions furniture and boards.
What we haven't seen
We haven't seen how many hits a brace takes or which furniture holds best. Those numbers aren't shown in the footage we've checked.
Tips
- Don't wait: brace as soon as the corridor warning appears.
- Repair the brace before each night once the first attack has gone.
- A weapon is for when the barricade fails.
FAQ
How do you barricade the door in 30 Floors Up?
Drag the couch to the marked brace position on Day 3, add more furniture and jam the handle with a chair.
When do zombies first attack in 30 Floors Up?
On Day 3 in the long co-op run: the objective reads Something is gathering in the corridor.
Do you need to repair the barricade?
Yes, Day 8's objective says to repair and brace the door before night.
More 30 Floors Up pages
- 30 Floors Up Day by Day
- 30 Floors Up Day 9 to Day 38 Objectives
- 30 Floors Up Best Weapon and Tier List
- 30 Floors Up beginner guide
- 30 Floors Up codes
- 30 Floors Up wiki: live stats
Sources
Checked Nov 12, 2026. Community wikis are edited by players, so numbers marked “per” one wiki may change after an update.