Essential checks for your front and back doors

Why your doors matter most after dark

When the sun sets and you’re winding down for the night, your home should feel like a safe haven. Yet the hours of darkness are when burglars often prefer to operate. Most intruders look for the easiest way in, and that is usually through a door. Your front and back doors are the primary barriers between you and the outside world. A few simple, regular checks can dramatically reduce your risk and help you sleep more soundly. This isn’t about turning your home into a fortress; it’s about knowing the weak spots and fixing them.

Inspect hinges and frames for hidden weaknesses

Before you think about locks, take a slow walk around your doors with a torch. Start with the hinges. Are the screws tight? Are there signs of rust or wear? On doors that open outwards, the hinges are exposed to the street, which means a burglar could simply remove them. If that’s the case, fit hinge bolts – also called security pins – which keep the door in place even if the hinges are cut. For inward-opening doors, hinges are less vulnerable, but loose screws still weaken the whole assembly.

Next, examine the frame. Look for cracks, soft wood, or gaps between the frame and the wall. If you can see daylight around the door when it’s closed, an intruder can exploit that gap. Use a screwdriver to gently probe the frame near the lock and hinges; if it feels spongy, rot may have set in. Pay attention to the strike plate – the metal piece that receives the latch or bolt. Often it’s held by short screws that only go into the frame. Replace them with 75mm screws that reach into the wall for real strength.

• Hinges: tighten or replace screws; fit hinge bolts on outward-opening doors.
• Frames: repair rot, seal gaps, and reinforce with longer screws at the strike plate.
• Door fit: ensure the door closes snugly and doesn’t rattle.

Don’t ignore the letterbox – it’s a common point of attack

Letterboxes are a convenient feature, but they can also be a gateway for thieves. A technique called “fishing” involves pushing a hooked tool through the letterbox to grab keys left in the lock or on a nearby hook. Once inside, the burglar can simply open the door. Check your letterbox: is it large enough for a hand to reach through? Does it have a protective cage or guard on the inside? If not, consider fitting a Birmingham bar. This is a curved metal bar that fits over the inside of the letterbox. It allows post to drop through but blocks anyone from reaching in. It’s simple, inexpensive, and highly effective. Also, make it a habit to keep keys well away from the door, not on a hall table or in the lock itself.

Fit a five-lever mortice lock to your main entrance

For your front door, the lock is the heart of your security. A five-lever mortice lock that meets British Standard BS3621 is widely regarded as the benchmark for residential doors. Unlike a simple night latch, a mortice lock is embedded in the door and requires a key to operate the deadbolt. Five levers make it much harder to pick than a standard cylinder lock, and it offers good resistance to drilling and forcing. When choosing one, look for the BS3621 kite mark. Have it fitted by a competent locksmith or a confident DIYer – the lock must sit flush and the door must be solid enough to hold it. At night, always turn the key to deadlock it. If you have a night latch as well, use both for defence in depth.

Add a Birmingham bar for extra protection

You’ve already read about the Birmingham bar in the letterbox section, but it deserves a special mention as a night-time upgrade. Fitting one is a ten-minute job with a screwdriver. It works alongside your five-lever mortice lock by closing off the letterbox as an entry point. This is especially important if your letterbox is close to a door handle or a thumb-turn. Some bars are fixed, others can be lifted for larger post. Make sure it doesn’t interfere with the letterbox flap or your post arriving. For back doors, the same principle applies: if there’s a letterbox, fit a bar. If there isn’t, focus on the lock and hinges.

Make your night-time routine second nature

Security is most effective when it becomes a habit. Before you go to bed, do a quick circuit of your home. Check that the front and back doors are locked, the five-lever mortice is deadlocked, and the Birmingham bar is in place. Remove keys from any locks and store them somewhere out of sight and out of reach of the letterbox. For back doors, which are often overlooked, apply the same standards: a five-lever mortice lock, hinge bolts if the door opens outwards, and a solid frame. Consider motion-sensor lights outside, and keep a phone charged by your bed. If you hear something suspicious in the night, do not confront anyone – call 999 from a safe place. These steps aren’t about living in fear; they’re about giving yourself the peace of mind that comes from knowing you’ve done the simple things well. A few minutes each evening is a small price for a safer, calmer night’s sleep.