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Guest JohnCr

Does ventilation grille damage fire door?

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Guest JohnCr

We have a client that has inserted ventilation panels into his paint mixing room fire door, to allow better air flow. We believe that this has damaged the integrity of the door and he should no longer class it as a fire door.

Where can I find some documented evidence to support our belief and persuade him to buy a new fire door.

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In response to your query, intrumecent air transfer grills can be fitted to fire doors, though these doors must have been tested (test fire) by the manufacturer with the transfer grill in question fitted.The air transfer grill must be fitted by a licensed fitter (BWF) and the recommended unit fitted in line with the manufactures guidance. If he has fitted a transfer grill himself intrumecsent or not it will no longer be a certified fire door, subject to a FRA it may need replacing.

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Ryan I agree with what you say, but what about those thousands of fire doors that are not certified fire door sets which I term nominal fire doors its just another item to assess when deciding if the fire door will meet the required standard.

If it needs to be replaced, then I would insist on a certified fire door set to replace it.

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Guest Ryan Mcmullan

I think the main issue would be the fact that now the fumes from the paint mixing room can vent into the building, further spreading the risk.

I am just interested in the door to which the question mentions and not all the doors in the Uk . When I carry out a FRA it is based on the individual premises and what might be the set up in another . If the fire door is not a fire rated door, then what standard is there for it to meet exactly ;)

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The paint mixing room could have a large fan extracting the fumes to outside the premises and the vent in the fire door could be an input vent, without knowing a lot more and preferably a physical inspection then it is very difficult to make a decision.

The original question stated " We believe that this has damaged the integrity of the door and he should no longer class it as a fire door" this would indicate it is a fire door and IMO only a FRA of the door can determine if the door can still be considered a fire door.

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Guest C Wood

Are the Safelincs intumescent grills suggested suitable for use on a boiler room fire door that opens into a stairwell?

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21 hours ago, Guest C Wood said:

Are the Safelincs intumescent grills suggested suitable for use on a boiler room fire door that opens into a stairwell?

As previously mentioned, whether the door would be still considered a certified fire door after fitting the grille is a matter for the FRA, but the intumescent grilles http://www.safelincs.co.uk/fire-rated-intumescent-air-transfer-grilles/ are suitable for any door that requires air flow while maintaining integrity in the event of a fire. So they should be fine for the boiler room door.

It is highly recommended that you confirm this with a fire risk assessor.

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Cold smoke separation will likely be an issue where a fire door opens onto a staircase. Ensure your fire risk assessment addresses fire and cold smoke separation issues before making a decision about the requirements for the door. 

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Guest George

We have a situation where the fire officer is wanting a fire rated air vent that will also close if smoke is detected, we are struggling to find such a product. He assures us that they do exist. Can anyone help? Thanks  

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Guest Stu

It would have to be a automatic grill if it’s to stop cold smoke intumescent grills will only close in the event of a fire

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Guest Alan

Hi , quick question, How can I tell if the grilles in a fire door are fire rated grilles. ?? thanks 

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Remove the grille cover and check inside to see if an intumescent air transfer grille has been fitted. Such intumescent grilles are often labelled on one edge with details of fire performance, which should be a test to BS 476 part 22 or BSEN 1634-1.  The intumescent grille should be a tight fit in the aperture and depending on the construction of the door core the aperture may require a hardwood or intumescent liner.

Example of an intumescent air transfer grille can be found here https://www.safelincs.co.uk/fire-rated-intumescent-air-transfer-grilles/?fGB=true&gclid=EAIaIQobChMImoKltsbW4QIVxbTtCh1uVQ4XEAYYASABEgITtPD_BwE

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