Hi Crank, I've been a bit busy, thanks for all the detail. You are obviously a locksmith of integrity. I do IT and have had loads of opportunities to make a meal of it, but I'd rather not be classed as that sort of guy either. Hope the coffee was nice though, the last thing you need is for Matt Allwright with a plastic nose and glasses to be breathing down your neck.
Anyway, I saw another couple of other decent locksmiths yesterday just to consolidate my thoughts and I've gathered the following, if my understanding is correct but I welcome being corrected by anyone if I'm wrong:
- 3R35X curtain slipping round accidentally happens at about the frequency you guys have seen it (for a single customer) i.e. once every few years or so, depending on how mindful the key users are. All locks with a curtain (high security lever/detainer locks) seem to use a similar method regarding the detent of the curtain and are therefore prone to the same issue as discussed.
- 3R35X complies completely with fire regs for an escape route final exit door (bearing in mind this is a private residence with four flats) but it does not have the features that make it BS Standard insurance approved (it's not able to be deadlocked from either side using a key).
- If the 3R35X was substituted for a lock that conformed to BS Standards, it would no longer comply with the fire regs for an escape route final exit door.
- There are a few high end rim locks that could be used instead of the 3R35X, but as above, they would fail to comply with the fire regulations, due to the fact they succeed in complying with the current BS Standard (they are deadlockable using a key). Further to that, rim locks are not regarded as highly secure in comparison to high security mortices, due to their design, which is why an additional mortice dead lock is usually installed in conjunction with them. Again in this case, a combo of rim/mortice would not comply with the fire regs for an escape route final exit door.
- To avoid using curtained mortice locks in the same application, it would be possible to cobble together a mortice lock kit based around a euro cylinder, with the appropriate additional hardware. However when comparing the reliability, security capabilities and vulnerabilities of Euro locks against the 3R35X, the positives seem to lean heavily towards the 3R35X. In addition to this, the above does not even take into consideration the Euro lock's chequered history with regard to its susceptibility to being bumped, snapped or defeated by other methods of cylinder attack. As an aside, it would also mean filling and making good the wooden door frame, then chopping out the wood from scratch to accommodate the new mortice lock's form factor.
I would welcome any comments if Ive missed anything... Cheers.
Anyway, I saw another couple of other decent locksmiths yesterday just to consolidate my thoughts and I've gathered the following, if my understanding is correct but I welcome being corrected by anyone if I'm wrong:
- 3R35X curtain slipping round accidentally happens at about the frequency you guys have seen it (for a single customer) i.e. once every few years or so, depending on how mindful the key users are. All locks with a curtain (high security lever/detainer locks) seem to use a similar method regarding the detent of the curtain and are therefore prone to the same issue as discussed.
- 3R35X complies completely with fire regs for an escape route final exit door (bearing in mind this is a private residence with four flats) but it does not have the features that make it BS Standard insurance approved (it's not able to be deadlocked from either side using a key).
- If the 3R35X was substituted for a lock that conformed to BS Standards, it would no longer comply with the fire regs for an escape route final exit door.
- There are a few high end rim locks that could be used instead of the 3R35X, but as above, they would fail to comply with the fire regulations, due to the fact they succeed in complying with the current BS Standard (they are deadlockable using a key). Further to that, rim locks are not regarded as highly secure in comparison to high security mortices, due to their design, which is why an additional mortice dead lock is usually installed in conjunction with them. Again in this case, a combo of rim/mortice would not comply with the fire regs for an escape route final exit door.
- To avoid using curtained mortice locks in the same application, it would be possible to cobble together a mortice lock kit based around a euro cylinder, with the appropriate additional hardware. However when comparing the reliability, security capabilities and vulnerabilities of Euro locks against the 3R35X, the positives seem to lean heavily towards the 3R35X. In addition to this, the above does not even take into consideration the Euro lock's chequered history with regard to its susceptibility to being bumped, snapped or defeated by other methods of cylinder attack. As an aside, it would also mean filling and making good the wooden door frame, then chopping out the wood from scratch to accommodate the new mortice lock's form factor.
I would welcome any comments if Ive missed anything... Cheers.