CISA lock being tampered with
March 30, 2018 7:03 PM   Subscribe

People are tampering with our CISA lock on the tenement door (UK) - do people here know anything about these locks, and what is being done to it and how to stop it? More inside.

I live in a Scottish tenement stair. The stair door has a CISA lock which works with the door buzzers/intercom. About once or twice a year it gets tampered with so the latch and bolt won't come out. What are people likely doing to the lock to disable it? Are there simple things I can do to undisable the lock before calling an expensive locksmith? Is there any tamper proof alternative or way to stop the tampering? When the lock is broken we get vandalism and security problems. Thanks!
posted by Flitcraft to Home & Garden (3 answers total)
 
Best answer: With the door open and the bolt retracted (by an electromagnet opposed by a spring, I gather) they're probably wedging something between the rectangular bolt and its housing to keep the spring from pushing the bolt back out of the body of lock and locking the door-- a thin piece of wood, plastic, or metal, presumably.

You could probably work the wedged object out of there with a dental tool, a thin metal nail file, or even a nut pick, using a pair of pliers to pull it the rest of the way out when you've got enough showing to get a grip on.
posted by jamjam at 9:03 PM on March 30, 2018 [2 favorites]


How well do you know your neighbours on the stair? It’s going to be someone who wants to be able to get it in without using the buzzer. Talk to the nice ones. You might be able to narrow it down to one flat, then go and have a word.
posted by rd45 at 2:02 AM on March 31, 2018


Response by poster: There are 11 flats in the stair, many of them multiple occupancy, so yes it is likely someone's tenants or their guests (in the past workmen have done it because they couldn't be bothered with the door) but I only know the other permanent occupants and we don't tend to know the very short term renters because of the turn over. I'll go and look at the lock and check for stuff that's been pushed in.

Does anyone know of any better alternative to the CISA? It's touted as the gold standard solution for tenement stairs but ours has been disabled several times and I'm at my wits end. I'd like to put a security camera on it, but the law seems very restrictive.
posted by Flitcraft at 7:58 AM on March 31, 2018


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