Ultimate Guide to Door Chains: Secure Your Home
This part of the ultimate guide to home security we look at Door Chains. We will go through the best door chain height, best door chain lock and how to fit a door chain. Whether you need a door chain for a uPVC door or just want to know how a door chain works, we’ve got you covered.
In a Hurry? Here's the Key Info
- Door chains let you speak safely without fully opening the door.
- Use police-approved UAP TS003 chains for best strength.
- Chains supplement, not replace, primary locks.
- Types: standard, lockable, or restrictor (for uPVC/composite).
- Install securely at correct height and always use primary locks.
- Professional fitting ensures maximum security.
Door chains are a simple yet effective way to boost home security and give you peace of mind when answering the door. Whether you need door chains for uPVC door or wooden doors, this guide explains how door chains work, how to install them, and how they improve home security.
Why Install a Door Chain?
A door chain allows you to speak to visitors without fully opening your door, giving extra security against forced entry. They are particularly useful if:
- You feel nervous answering the door
- You want to prevent children from opening the door unsupervised
- You want a visual and physical deterrent against burglars
A properly installed door chain prevents the door from opening more than a few inches, allowing communication and small item delivery safely.
Police Approved Door Chains
For maximum safety, use a UAP TS003 door chain, accredited by Secured by Design, the police-approved security standard. These chains are:
- Trade-grade and robust
- Tested to endure 200Nm of breaking force
- Ideal for uPVC doors and wooden doors
Are Door Chain Locks Effective?
Door chains are effective for in-home security, but they are not a replacement for primary locks. Their main benefits:
- Extra protection when answering the door
- Visual deterrent to intruders
- Childproof options for added household safety
For enhanced security, combine a door chain with:
- High-security locks, such as British Standard or anti-snap
- Outdoor cameras
- Sturdy garden fences and gates
Types of Door Chains
1. Standard Door Chains
- Non-lockable
- Prevent the door from fully opening
- Easy to use for quick protection
2. Lockable Door Chains
- Can be locked from inside or outside
- Ideal for glass, aluminium, and uPVC doors
- Childproof and suitable for the elderly
3. Door Chain Restrictors
- Fit around the door handle
- Compatible with uPVC and composite doors
- Act as an alternative or supplement to standard door chains
Door Chains for uPVC Doors
- Can be installed using security screws or rivets
- Door chain restrictors offer additional security for uPVC doors without drilling into the frame
- Always check warranty and insurance requirements before installation
How to Install a Door Chain
- Choose the right height – accessible for adults and responsible children.
- Mark and drill pilot holes for the lock plate.
- Fit the chain plate securely to the door.
- Attach the chain to the door frame.
- Test the chain to ensure it holds firmly.
Tip: Proper installation is crucial; a poorly fitted chain reduces security.
Most Secure Door Chains
Look for:
- Secured by Design or police-approved door chains
- TS003 Tested – ensures strength and durability
Also called: Door chain, security chain, or door chain interviewer.
Door Chain Safety Tips
- Always engage your primary locks; door chains are supplemental security
- Avoid relying solely on a door chain when leaving home
- Ensure door chains are high-quality and professionally installed
Need a Locksmith to Fit a Door Chain?
Professional installation ensures maximum security. Contact Keytek Locksmiths for:
- Door chains for uPVC doors, wooden doors, and glass-panelled doors
- Lockable door chains for childproofing
- Additional security measures for your home
Becki Hooper
Becki is a seasoned home security specialist and the Marketing Manager at Keytek, one of the UK’s leading locksmith companies. With over a decade of hands-on experience in the locksmith and security industry, she offers trusted guidance on everything from upgrading to high-security locks to selecting the best home protection systems. A graduate of Winchester University, Becki blends academic insight with practical expertise to empower homeowners with reliable, up-to-date security advice.
