Ronan

Thank you!

ok I will. For the cold smoke do you think these type of doors that form like a seal with the frame need the same type of intumescent with brushes? In that case wouldn't be a noise/weather seal be the same? Of course the intumescent needs to be there, I'm not sure about the brushes

Hi, I've found this website www.burglarybusters.ie and they claim to have doors that are more secure and still compliant with fire safety regulations. Do you know if these are really admissible or it's just them adjusting their marketing to what's required? Thank you

I'm trying to understand the same. If the brush touches the frame in my opinion it should be ok. Especially if it's 6mm for example. The intumescent expands enough to cover that gap. I'm no expert but I think the 4mm rule is just a rule, not required by law.

ok that means that if the lock has been installed properly these kits are not required? Thank you

Hi, I've seen intumescent kits sold online. Are those mandatory for FD30 doors? I've checked my doors at home and none have intumescent around the locks. Thank you Ronan

Got it thanks!

thank you, I will have to understand how to fit those but thanks

Thank you @Neil Ashdown MAFDI, do you mean something like this? https://envirograf.com/product/surface-mounted-brush-smoke-seals/ I can look into it, I understand how you would fit it at the hinges side, but how would you install it on the latch side? I also understand that this is a better solution based on your expert advice, but if I installed something like Surface mounted intumescent fire & fire/smoke seals at the hinges and latch, would it be better than nothing? https://envirograf.com/product/surface-mounted-intumescent-fire-firesmoke-seals/

Hi, I am thinking to fit something like surface mounted intumescent strips or surface mounted intumescent fire & fire/smoke seals over the hinges and the latch area, because I don't understand how smoke wouldn't pass through those. I wanted to get your expert opinion: is it a good idea? Bad idea? Useless?

After looking more into gaps I'm a bit confused. It doesn't seem like those 3+/-1 mm are a legal requirement, they are "recommended". Is that true?

thank you! It would be great if anyone could answers my questions, worst case I will learn at the course!

Hi, I am getting more and more passionate about fire safety regulations, especially on fire rated doors, also thanks to this forum. I am trying to understand more about why gaps are so important and how they were determined. For example - why 10mm gap is allowed at the bottom but only 4mm on the sides and on top? - why 5mm would fail? What's the difference with 4? That smoke seals are only 4mm or because flames would pass in 5mm but not in 4? - why 2mm is ok but less it's not? Thank you for helping me in understanding more. Could you suggest a good course or certification on these matters?

Hi @Neil Ashdown MAFDI, first of all thank you, it's great you took the time for such a detailed response, which is incredibly helpful. on 1) I was thinking to install this https://www.safelincs.co.uk/surface-mounted-drop-down-smoke-seal/?q=seal, hopefully this will fix the problem. I'm looking at threshold seals, do you think that would be better than the dropdown seal? on 2) I have taken better measurements and the door is not straight, there is a section on one of the sides that is 5.5 mms. Too bad the other side is 3.5 mms, so even trying to adjust it, I would have more than 4mms on one side (just a small section). Is there anything that can be done in this situation? Would that framefit product I mentioned above be helpful? The installer mentioned that intumescent strips with taller brushes will fix this but I'm not sure. on 3) ok I think I will replace these as a set, is it a job that anyone with some DIY skills can do or should I ask an expert? on 4) sounds like I will skip these as they weren't installed and I would not be able to put back the door the correct way. Thank you again!

Update, now they said they are going to provide documentation and also a metal tag that will show FD30, the company from where they got the core, this company identification. thank you @Mike North! It's always great when you can get answers from unbiased people. What are your qualifications? Just to be able to reinforce my argument with who provided it in case I get asked. Thank you