Acrovyn impact resistant material - fire door repair

[lingmoor]

Hi all

I have seen a fire door that had a hole in one side (a lock had been removed) that had been repaired with a strip of Acrovyn (impact resistant material) I looked at one set of blurb that states it achieves Class O SSoF but no mention of fire resistance and another that states it conforms to either 30 or 60 minutes FR and quotes BS 476-Part 22

What's the opinion of this learned board on this stuff for fire door repair?

cheers

[nearlythere]

Hi all

I have seen a fire door that had a hole in one side (a lock had been removed) that had been repaired with a strip of Acrovyn (impact resistant material) I looked at one set of blurb that states it achieves Class O SSoF but no mention of fire resistance and another that states it conforms to either 30 or 60 minutes FR and quotes BS 476-Part 22

What's the opinion of this learned board on this stuff for fire door repair?

cheers

Being a metal I suppose it would comply with Class 0 and be fire resistant. But the issue is can it be shown that it can be used successfully to cover a hole in the fire door so as to ensure its fire resistance.
Would be quite sure that it has never been subject to test for this purpose, but that would not mean it wouldn't work.
Thats where the "Call" come in to play.

[Fishy]

It would appear from the literature that it's a thermoplastic sheet and, as such, it will have little ability to contribute to fire resistance.  It may have been used in constructions that have achieved defined levels of fire resistance, but that info. on its own is meaningless.