Do I need both fire door retainer and door closer?

[Guest Louise]

Thanks

I look forward to your response.

Do I need a fire door closure in addition to the retainer.

If I installed a fire door retainer, would this work on a door that doesn't stay open on it's own?

I have an indoor fire door within the office. It doesn't hold open on it's own.
Hi

[Tom Sutton]

A fire door has to be fitted with a door closer to ensure the fire door is in the closed position when a fire reaches it. If you need to keep a fire open then you can fit a fire door keep open device (retainer) which release the door when the fire alarm operates and the fire door closes as it should.

Check out http://www.firecode.org.uk/.