How to Choose the Right Door & Window Security
Published 2026-07-30 · Updated 2026-07-30
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-07-30.
Our pick: the x2 Sash Jammers for uPVC Windows & Doors — Extra Security Window & Door Locks, Anti-Intruder Jammer Locks, White — the best Door & Window Security we tested, from £8.99.
Protecting your home is a top priority, and securing doors and windows is an essential step in ensuring your family’s safety. Before investing in security products like sash jammers or door chain restrictors, consider the specific vulnerabilities of your property – from window types to potential entry points. Evaluating these factors will help you select the most appropriate solutions for bolstering your home's defence against intrusion and enhance your overall peace of mind.
See the full range in Door & Window Security.
#1 Pick
x2 Sash Jammers for uPVC Windows & Doors — Extra Security Window & Door Locks, Anti-Intruder Jammer Locks, White- uPVC-compatible Plastic
£8.99
Pros
- Pack of 2 covers a door and a window
- Prevents uPVC frames being forced open
- No specialist tools needed to fit
Cons
- Designed for uPVC frames, not suited to timber windows
#2 Pick
TIMCO Door Chain Security Lock — Allowing Reduced Opening Angle of the Door, Polished Chrome, 85mm- Chrome-plated Steel
£6.49
Pros
- Polished chrome finish suits most front doors
- Restricts door opening for safer visitor checks
- Simple screw-fit installation
Cons
- Chain-only lock, not a substitute for a deadlock
#3 Pick
Sliding Sash Lock DGBRSM Black Sliding Window Sash Locks with Mounting Screws for Double Hung Windows- Zinc Alloy
£7.99
Pros
- Cam-action hook locks double-hung sash windows firmly
- Includes mounting screws for straightforward fitting
- Compact black finish blends with most frames
Cons
- Sold as a single lock, may need multiple per window
#4 Pick
SOL 2pk Chrome Door Chains for Front Door Lock Security Restrictor Chain for Home Safety- Chrome-plated Steel
£9.99
Pros
- Pack of 2 chains suits front and back doors
- Durable metal hardware with chrome finish
- Tamper-resistant sliding latch design
Cons
- Screws included are basic, may want to upgrade for solid doors
FAQ
What’s the best way to assess my home's vulnerability to burglary?+
Start by identifying all accessible entry points – doors and windows – then examine their frames for weakness. Consider ground-floor windows, as they are typically the easiest targets, and look for clear lines of sight from neighbouring properties.
How important is a good door frame?+
A robust door frame is crucial; it’s often weaker than the door itself. Ensure your frames are made of hardwood and securely fitted to the wall – a weak frame can be easily forced open, regardless of lock quality.
What kind of locks should I consider for my front door?+
For external doors, a British Standard 3 (BS3621) cylinder is essential; these offer higher security than cheaper alternatives. Consider adding a euro shield plate to protect the keyway from lock picking and ensure you regularly change your keys.
Should I install window alarms?+
Window alarms can provide an audible deterrent, but they are not foolproof. They're most effective when combined with other security measures like reinforced glass or physical locks, and should be positioned to cover the entire pane.
How does the UK climate affect my door and window security?+
Salt spray from coastal areas can corrode lock mechanisms and weaken frames over time. Regular maintenance – checking hinges, lubricating locks, and applying protective coatings – is vital to combat this.
I live in a terraced house; what extra measures should I take?+
Terraced houses are particularly vulnerable due to shared walls. Consider reinforcing the wall cavity with metal mesh or installing security shutters on ground-floor windows, as these offer significantly greater protection.
What tools do I need for basic maintenance and repairs?+
You’ll need a good quality screwdriver set (Phillips head and flathead), pliers, WD40 or similar lubricant for locks, and possibly a small hammer for adjusting hinges. Always wear appropriate safety glasses when working on your doors and windows.
Are there any legal requirements regarding window locks?+
While there isn't a specific legal requirement for all homeowners to install window locks, landlords are legally obliged to ensure that windows have secure locking mechanisms if they are rented out. Check your local regulations for the latest guidance.
What’s wrong with relying solely on a chain lock?+
Chain locks provide only minimal security and can be easily defeated by determined intruders. They shouldn't be considered a primary deterrent, but rather an added layer of protection alongside a robust door lock.
How often should I check my doors and windows for damage?+
At least twice a year – before winter and summer – inspect all locks, hinges, and frames for signs of wear or damage. Addressing small issues promptly can prevent larger problems developing that compromise your security.
In depth
Choosing the right door and window security measures requires careful thought and an understanding of your property’s specific vulnerabilities. It's not simply about slapping on a lock; a layered approach combining physical deterrents with smart habits is far more effective against determined intruders. Begin by conducting a thorough assessment of your home – consider both external and internal access points. Note the type of door you have (solid core, composite, wood), the window glazing (single-glazed, double-glazed), and any existing security features. Pay particular attention to ground floor windows and doors, as these are statistically most vulnerable.
Before purchasing any locking mechanisms or reinforcement products, take accurate measurements. For doors, measure the thickness of the door frame – this is crucial for selecting mortice locks that will fit securely. Measure the width of the gaps around your frames; this dictates the size of hinges you'll need if reinforcing, and informs decisions about brush strips to minimise access points. Window dimensions are equally vital, especially when considering window bars or security films. Don’t underestimate the importance of knowing your door and window specifications – incorrect measurements will lead to a poor fit, reduced effectiveness, and potential damage during installation. A basic level tool kit is essential; this should include a tape measure, a small hand saw (for trimming hinges if necessary), a screwdriver set with both Phillips head and flathead bits, and possibly a mallet for gentle tapping. Safety glasses are crucial when working with tools to protect your eyes from dust or debris.
A common mistake UK homeowners make is focusing solely on the lock itself. While a robust mortice lock is undeniably important, it’s only one element of a secure door. Weak hinges are an easy point of entry for a determined individual. Consider reinforcing existing hinges with hinge pins that have longer shanks and feature retaining clips – these prevent them from being easily removed. Similarly, address gaps around frames with brush strips; even small cracks can provide access points for tools or fingers. Furthermore, check the condition of your door frame itself. A weakened frame is as vulnerable as a flimsy lock. Reinforce the frame with timber if necessary, ensuring it’s securely fixed to the wall – use appropriate screws and fixings suitable for masonry.
Climate plays a significant role in security considerations within the UK. High winds can put considerable strain on doors and windows, potentially weakening frames or allowing access through compromised seals. Regularly inspect your locks and hinges for signs of wear and tear, paying close attention to lubrication. Applying a silicone-based lubricant regularly will ensure smooth operation and prevent seizing, particularly during periods of damp weather which is common in the UK. Consider installing draught excluders – these not only reduce energy bills but also minimise gaps that could be exploited by intruders. When selecting window films, opt for those designed to withstand impact; thicker films offer greater resistance than thinner ones.
Another frequently observed error involves a lack of awareness regarding local regulations and security standards. While there isn’t a universal UK standard for door locks, British Standard BS3621 specifies minimum security requirements for mortice locks. Choosing a lock that meets this standard provides a baseline level of protection. Furthermore, be mindful of potential noise restrictions when installing window bars – some local councils have regulations regarding the size and placement of external obstructions to avoid obstructing views or causing inconvenience to neighbours. Finally, remember that no security product is entirely foolproof. A determined burglar will always seek vulnerabilities; layering your defenses – a robust lock, reinforced frames, effective window films, and a well-maintained perimeter – offers the best overall protection. Investing in a home security system, including door sensors and motion detectors, can provide an additional layer of deterrence and alert you to potential intrusions.