Hi all

We have a cable tray running through a wall above an arched doorway leading into a baasement WC area

There is old foam fire stopping where the cable tray comes through the wall however has detrioated there are also gaps arond the wall and the cable tray

The arch doorway has not actual door so there is no compartmentation as such

My question is, is there any point to the fire stopiing if there is an open doorway underneath it?

Hope that all makes sesnse!

Cheers

Mike

Hi Mike. If I've understood the situation right, the way I'd approach this would be to determine whether that wall & door/ arch in question does in fact need to be compartmentalised (via a fire risk assessment). If it does need to be a fire resisting wall then you'd need to make sure the whole wall and arch/ door offers the correct level required (30min/ 60min). 

If the wall with the open arch is currently breached then I'd leave it as it is until the above is determined. If this wall does not need to be fire resisting then there is no requirement (or need) to fill the breaches - the smoke and fire will go through the open arch anyway. 

Hope this helps. 

Beware most foam fire stops are only compliant if used as per the fire test certification and in my experience are only any good for small gaps. Take a look at:-

https://www.youtube.com/watch?time_continue=404&v=j7wrIoB_wo8&feature=emb_title

https://asfp.org.uk/wp-content/uploads/2018/11/asfp-e-bulletin-issue-8.pdf