Security Chains

Learn more about door security chains

A door security chain lets a door open only a short way while the chain stays engaged. It gives a temporary restraint so someone inside can speak to a caller, take a delivery or allow airflow without opening the door fully.

They work alongside the main lock rather than instead of it. The brackets and fixings matter as much as the chain links, so the door surface, fixing method and layout all need checking before you choose.

Typical uses

• Residential entrance doors: Allowing homeowners and tenants to open front or back doors partially to verify caller identity.

• Social housing and care facilities: Fitting easy-to-use secondary security on entrance doors for vulnerable residents.

• Commercial and office access points: Securing restricted internal office doors and staff-only reception access points.

• Rental property upgrades: Fitting HMOs and rental apartments with secondary door restrictors.

How to choose the right door security chain

• Measure the door thickness, confirm the frame material and check the hinge side, latch position and any obstructions such as glazing, letterboxes or surface trims.

• Match the chain length and bracket positions to the door so the engaged gap is sensible and the brackets land on solid material.

• Decide whether a single stud, multi stud or longer chain suits the opening you need.

• Choose a fixing method that suits timber, uPVC or metal.

• Check the product specifications so the chain suits the door type.

Before you order

• Get the measurements and fixing positions.

• Confirm the opening direction, the clearance the chain needs to operate and the fixing centres.

• Check the door thickness and frame material so the chain and fixings are suitable.

• Make sure the door and frame can take the brackets securely.

• If you’re fitting to uPVC or composite doors, check the manufacturer’s guidance before drilling, because fixings could affect warranties.

Explore our range of door security chains

Browse our full collection to find the exact plate dimensions, link strengths, and architectural finishes your job needs. 

Order online today to take advantage of our convenient Click & Collect service at your local Travis Perkins branch, or select a delivery time when you need it to keep your project moving.