what are doors made of
What Is A Composite Door?


Endurance composite doors are made of a selection of materials including a 48mm thick solid timber core with 17 layers of engineered timber, as well as durable uPVC and laminated door skin. Each material is chosen for its specific properties, fused together to result in one of the strongest door materials currently on the market. Unlike uPVC doors which are made of just plastic, a composite door from Endurance is made of a number of materials that are pressed and glued together under high pressure conditions. You will see exactly what our composite doors are made of.

Read More

The idea for composite doors came about to find a solution to problems often found in single-material doors, by selecting specific materials with certain properties to counteract them. The expert composite door construction process means you’re investing in a sturdy door frame made from tough and robust materials for your home.

composite door materials
What Is A Composite Door?

Undeniable Security

This promises to add extra security, enhanced weatherproofing and provides you with complete peace of mind about the safety and protection of your family and home. The advantages of a composite door include the extensive choice you get when it comes to tailoring them to your personal taste and requirements. With an array of colours to choose from, as well as woodgrain effects, textures and finishes, you can receive a unique composite door construction that is bespoke to your home.

Read More

What our composite doors are made of is durable materials. The colour and aesthetic will last due to the state of the art manufacturing techniques that ensure your composite door is resistant to weathering. You won’t have to worry about spending time or money on the upkeep of your new door even after heavy or frequent use.


Solid Timber Core Doors

Our three composite door collections are each designed with a 48mm thick solid timber core. Creating one of the most durable and robust composite door in the market today. Combined together with 17 laminations layers, we can provide homeowners with additional solidity against bowing and warping.

what are the benefits of the solid timber core external doors
Urban Door Hardware

Durable Hardware

We understand that the accessories to your door are important for offering security to your home. So we have a wide range of letter plates, lever handles, knockers and locks in a range of materials including gold, chrome, graphite and stainless steel.

Range of Colours & Styles

With a choice of over 76 styles across our Classic, Country and Urban composite door ranges, our customers can be sure to find the right style to suit their home. We offer 19 different colours that are heat reflective to provide a hard wearing, long lasting colour. Designed to reflect up to 95% of the heat from the sun.

how are composite doors made
endurance door locks


The Secured By Design testing process is both intense and comprehensive – and we passed. Our range of doors is proven to be one of the most secure doors in the industry. With a video below showing one of our team attempting to break into the door with a sledgehammer. You can be sure that you are making a worthwhile investment in your new door.

Build Your Door
endurance doors glazing
What is GRP? (Glass Reinforced Plastic?)

Superior Composite Doors Without GRP

What is a composite door made of? Usually, most design feature glass reinforced plastic, or GRP. This is a fibre-reinforced polymer made of a plastic matrix and is reinforced by fine fibres of glass. While doors featuring GRP can be lightweight, they are not as robust and durable as Endurance composite doors, meaning they do not afford you and your home the same levels of protection and thermal efficiency.

Read More

The materials that make an Endurance door mean you can enjoy more benefits than those manufactured using GRP. Our composite doors include a solid timber core beneath an aesthetic that offers the traditional look and feel of timber, just like GRP doors, but with improved levels of performance. As a result, you can enjoy exceptional levels of style and functionality for many years to come.

How Secure Are Our Composite Doors?

What is a composite door going to do about protecting you? With a timber core, Endurance’s doors are the first choice when it comes to securing your home and keeping you safe and protected. Our 48mm thick solid timber door slab has proven to be sledgehammer-proof, which gives you an idea about the level of security they provide.

Each of our doors has undergone controlled security tests to replicate common forms of attempted burglary or break-ins, to make sure that the inner core can withstand an attack and maintain its integrity. Enjoy complete peace of mind by choosing Endurance Composite Doors.

You can upgrade your Endurance composite door to include the highest-rated security cylinder, developed to counteract lock snapping in order to gain entry. The ATK is a euro cylinder with the Master Locksmith Associations highest rating as well as achieving the British Kitemark and Secured by Design accreditations.

Design Your Door Image


Our HomeView Door Designer offers a simple to follow step by step process, enabling you to construct your ideal composite door and see how it looks on your home.

composite doors made of
What is a Composite Door Good For?

How Good Are Composite Doors For Insulation?

All of our composite doors are made up of 17 engineered timber laminates. With a durable and robust solid timber core, as well as an innovative Moisture Barrier System, our doors offer increased thermal efficiency to any property they are installed into. Offering the best heat retention and achieving impressive energy ratings, our doors are able to assist in lowering energy bills and reducing your carbon footprint.

Read More

The main aim when it comes to increased insulation is to retain heat to keep your home warmer for longer. This makes your home a more comfortable and inviting place to spend time for all of the family. Our composite door construction process will provide a watertight solution so that your home will stay dry and moisture free, no matter the weather.

3mm bowing guarantee composite doors
What is a Composite Door Good For?


What are composite doors made of? Our doors comprise highly durable layers that have been combined to create the most durable composite door in the market today. Because of this, they can provide homeowners with the peace of mind that they need to know they are making the right investment in Endurance doors.

Read More

Visit our online door designer today for your composite door prices. You can also get in touch with us via our online contact form where a member of our team will be more than happy to help with any enquiries that you have.