Our local Friern Barnet locksmiths are trained to know the most secure options for domestic and commercial properties. We can install and fit door chains, internal door locks, and spy holes to doors, to increase security, especially for the elderly and vulnerable. For Friern Barnet commercial premises, we can install door bolts, combination locks and change manual shutter lock barrels. For all our Friern Barnet customers, we can change door and window handles. All locks supplied come with 2 keys; however, more can be supplied on request, for a small fee.
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Rim Cylinder locks are often used for low-security installations and older residential properties. While these locks can conform to BS 3621, Insurance companies will often insist on a Mortice lock in addition, because Rim Cylinders have a low security rating.
A Nightlatch must be present on the back of the door; otherwise the locking catch can be bypassed very easily. Rim Cylinders are sometimes erroneously referred to as Yale Locks, as Yale is the biggest manufacturer of these locks. However, other companies, such as Chubb, manufacture them as well.
Like Rim Locks, these types of lock are vulnerable to break-ins if not supplemented with additional security.