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Chemical incidents: how to prepare your home so you can shelter safely inside

Chemical incident: prepare your home: a practical guide

⏱ 2 min read

Room to seal, tape, radio. A guide based on official advice. The same text is in the free SurvivalZone.app and works without internet.

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A fire at a waste site, a leak from a rail tanker or an accident at a chemical plant can lead the emergency services to tell residents to stay indoors with windows shut. Such warnings are issued in Europe several times a year.

Then the most important thing is to seal a room quickly and have everything at hand.

Know what is nearby

  1. Check whether there are industrial plants, waste sites, railway sidings or tanker routes near your home. Under EU rules, the public must be informed about sites with a risk of major accidents and what to do.

A room to seal

  1. Choose a room with as few windows and doors as possible, ideally above the ground floor, because many gases are heavier than air. Keep wide tape, plastic sheeting, scissors and towels there to block the gap under the door.

What to keep at home

  1. Water and food for at least 3 days.
  2. A battery radio.
  3. A torch and a power bank.
  4. FFP2 masks for brief trips outside.
  5. Knowing how to switch off mechanical ventilation, heat recovery and air conditioning.

Information

  1. Emergency alerts reach phones in the affected area. Radio, the fire service and the local council also give updates. Do not go outside to see what is happening, and do not drive towards the smoke.

Checklist

  1. Nearby plants and tanker routes checked
  2. A room to seal chosen
  3. Tape, sheeting, towels
  4. Water and food for 3 days
  5. A battery radio
  6. You know how to switch off ventilation
  7. FFP2 masks

See also

Frequently asked questions

How do I seal a room in a chemical incident?

Close windows and doors, tape over gaps with sheeting, block the gap under the door with a wet towel and switch off ventilation.

Which room should I use?

One with the fewest windows and doors, ideally above the ground floor, because many gases are heavier than air.

How will I know about a chemical incident nearby?

From emergency alerts on your phone, the radio, and fire service and council announcements.

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Sources

Official sources are checked automatically every day. Last check: 2026-11-04.

General guidance only; it does not replace the emergency services. If a life is in danger, call 112.