AdviceHome securityWindows

Window and Door Lock Care

In the days when all we had was a simple Yale or Chubb lock to choose from, lock maintenance was simple and even largely non-existent. A spot of oil or even that strange trick of running a pencil up and down your key worked a treat. Job done. But we now have more locks around our homes, as well as far more complex locking systems for our doors.

Look at your home now and it is likely that you have a dozen or so locks securing the front door, patio door, back door, windows and skylights. Left unused (as some window locks always are) or unmaintained, these locks will eventually seize up and stop working without proper lock care. Others that are well-used may start to stiffen, stick or cease working altogether, which is concerning when they are your main way in and out of the house, or your escape exit in the case of emergency.

lock care

No one wants to come home and put their key in the front door while having to cross their fingers that the lock works as it is supposed to. Yet we often ignore lock maintenance or problems that are developing with them, as it is something of a specialist job to put right.

Lock care and maintenance tips

The first thing you should do is to always keep your locks, keyholes and strike plates clean. A little elbow grease and a lint-free cloth should do the job. You don’t want to introduce any fibres to the lock, so don’t use that worn out yellow duster. Flip the lock in and out, cleaning it in both settings. Open up the door and give all the levers a clean on your multi-point locking mechanism. Clean the frame and around the door too. A clean door or window is always the best home for your locks. Damp, dirt and mould can easily build up in crevices and stop your lock from working. But do avoid the soap and water on this occasion. A wet lock is a lock on its way to rusting or jamming.

The most obvious fix for any lock is to spray a little WD40 or a similar oil into the keyhole and let that faithful standby do its work. And work it will, although many security experts will be quietly horrified if they see you doing it. Lubricating the lock with oil will make it work like a dream for a while, but you could be storing up problems for the future. You will inevitably have to oil the lock again and each time you do, you could be adding to the problems, as any oil or grease will also attract and stick dirt that can gum up the locking mechanism. It is a good emergency fix if your lock is jammed solid, but don’t use it more than once, avoiding it altogether if you can.

door lock maintenance

Image source: Buzac Marius

The secret ingredient that most locksmiths, window fitters and door experts use around locks is graphite in spray form. Just like the pencil you rubbed on your Yale key to make it work, or the one you rubbed up and down the zipper on an old jacket, the graphite spray works as a lubricant yet it does not attract or stick dirt to the moving parts of your locking mechanism.

Graphite spray is inexpensive, but it’s not always stocked by DIY chains. You may be better off looking online or in a local shop that sells car or motorbike accessories. Graphite spray is used by motorcyclists to keep their ignition locks in top condition and usually comes in a bottle with a nozzle that will squirt the grey spray into the smallest of locks.

Simply give it a good spray and wipe away any excess. You may have to go back and give your lock, door or window frame a second clean later, as some spray may leak out from the mechanism later on. But you will then have clean locks that move like they should.

For help installing and maintaining the locks in your home post a job on Rated People in our locksmiths category to receive quotes from our qualified and trusted tradesmen.

Iain Aitch

Iain is a London-based writer who works as a journalist for a number of newspapers and magazines. He has also written two books, one of which is a hilarious lexicon about Britishness – Iain is a Brit through and through!

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  1. rather than wd 40 for locks as you say graphite but not easy to find as a locksmith i use a product called GT25 does not collect dirt and a good lubricant

    1. Thanks John, I’ve been looking for a decent alternative to WD40 for the longest time. However I couldn’t find anything with Google on GT25, only GT85, which was also a well recommended lubricant. Did I mess it up again? ‘Cos I went ahead and bought some!! Cheers anyway – Chris Killingbeck
      ([email protected])

  2. Do NOT, repeat NOT use WD40 on anything with moving part. WD stands for Water Dispersant, which job it does perfectly. First it spreads as a thin liquid all along the surface, into cracks and crevices, at which stage it is an excellent lubricant and releasing agent. Then it sets as a firm varnish, and gums up the works. Not easy to clean off, either.

    Also, it is not an oil.

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