Class and security in one

Class and security in one

Stunning glazing and furniture options

Endurance Doors

Endurance Doors

Solid timber core Endurance doors

Endurance Timber Core Doors

Endurance Timber Core Doors

Stylish Endurance timber core doors

Solid Core Composite Door

Solid Core Composite Door

Modern & secure entrances to your home

Solid Timber Core Doors

Solid Timber Core Doors

Classic door designs from Endurance doors

Endurance Composite Doors

Endurance Composite Doors

Stainless steel bar handles and stylish glazing

Timber Core Composite Door

Timber Core Composite Door

48mm thick, solid timber core composite doors

Solid, Secure and Sexy!

Solid, Secure and Sexy!

The UK's thickest and most secure doors

Quick Enquiry Form

For questions or no-obligation quotations please use our Enquiry Form

window and door finance available
Premium Solid Core Composite Doors

The Endurance Solid Timber Core Composite door is recognised for extremely respectable strength, security and great looks. The cross-bonded, veneered laminated solid timber core is 48mm thick and provides ultimate strength, high security absolute peace of mind for home owners. 

Learn more about the Endurance Doors range here.

solid core composite door

Made in Great Britain - supporting the best of British manufacturing!

endurance doors special offer

  • British Kitemark Standard

  • Secured by Design Accredited

  • Patented Snap Secure Technology

  • Pick, Drill & Bump Resistant

  • Advanced pick resistance with anti-drill pins

Design your dream door...

Design your dream door online in the comfort of your own home, office, a train, a restaurant or even a comfortable toilet seat! Superimpose your design onto a photograph of your house and keep going until you find the exact door that you require. Then, simply click "SEND ENQUIRY" to request a totally no-obligation quotation from one of our in-house Timber Core Composite Door experts. We will respond to all enquiries within 24 hours, usually much sooner.

How to design your door


Watch this short video and get your creative juices flowing!

Secured By Design

Secured By Design is the official UK Police flagship initiative supporting the principles of ‘designing out crime’. Endurance Doors have been designed, tested and have achieved the standard. The Secured By Design standard upgrade includes - a 3* diamond cylinder and laminated glass.

FREE Locking Cylinder Upgrade

We will upgrade your standard 1* locking cylinder to the Ultion™ WXM 3* High Security Cylinder FREE OF CHARGE.


  • A manual attack on the locking hardware with tools including a crow bar and mole grips.

  • Unlimited number of 3 minute attacks on the door cylinder using a range of tools such as craft knives and screw drivers.

  • 3 minute manual attack using chisels and brick bolsters to gain entry through the door.

  • Hard body impact test – impacts are applied to the door leaf at hinge points and locking points using a 50kg steel impactor.


The £1000 Security Guarantee applies provided that all of the following conditions are met:

  1. Doors covered by the guarantee are deadlocked using genuine keys provided and the keys are not left in the cylinder.

  2. The guarantee form has been filled in and completed (online) and received within 28 days of the installation and not less than 1 month prior to any claim being made.

  3. The products must have been fitted by an Endurance Doors Preferred Installer.

  4. The ATK 3 Star Diamond Cylinder lock has been maintained correctly with graphite powder as a dry lubricant at 12 months intervals from the date of installation. Do not use WD40 or 3-in-1 oil.

  5. Any claims must be made in writing within 28 days of the break-in providing details of the incident and MUST include the crime reference number provided by the Police Authority the crime was reported to. An Avocet Technical representative will conduct a brief but detailed investigation within 28 days of the reported break-in. The ATK lock MUST be returned to Avocet for inspection with photographic evidence of the lock snapped within the door. After investigation if the report confirms that the ATK lock relating to the compensation guarantee were correctly fitted and maintained, according to our instructions, and failed due to a forced entry through the door the ATK lock was fitted in, the claim will be processed within 28 days of the inspection.

  6. Only one claim per installation is permissible within the 10 year guarantee period which commences at the registered installation date. Guarantee is valid for UK mainland installations and applies to domestic homeowners properties only.

    Click here to register for your £1000 Lock Snapping Guarantee

Secured By Design


Trusted Installer Partner


We recommend Endurance Doors - the UK's most secure doors.

What our customers say

Claire, Barry

Extremely happy with the door Rob supplied. He gave great advice when choosing and was always on hand to answer any questions we had. Wouldn't go anywhere else!

Jo & Alex, Abertillery

Would recommend Composite doors Cardiff. Brilliant service! Rob knows exactly what he's talking about and is very professional. My house looks stunning thanks to my new Windows and Composite door. Thanks once again. We are 100% satisfied customers!

Chris, Caerphilly

Rob was helpful from the start always there for any questions I had. 
I work with multiple pvc manufacturers as I own and run a property improvement company and Cardiff composites service was professional with a quality product will definitely be using them again.

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homepro insurance backed guarantee
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Composite Doors Cardiff Limited is an introducer appointed representative of Phoenix Financial Consultants Limited ("Phoenix"). Phoenix is a credit broker that is authorised and regulated by the Financial Conduct Authority (Financial Services Register No. 539195) which offers finance for home improvement projects from its panel of lenders. All finance subject to status and credit checks.

cerificate of excellence 2019
5 star reviews
cerificate of excellence 2020

Copyright © 2017-2020 Composite Doors Cardiff Limited.
Company No. 11654260. Registered in England and Wales.
VAT Registration No. 315 3976 91