white composite door

Endurance Composite Front Doors

It’s an inescapable fact that our energy bills go up in winter. As the weather gets colder, it gets increasingly difficult to stay warm and eventually, we all cave in and put the heating on. However, you don’t get a cosy home for free, and it costs money to turn the radiators back on after months of inactivity.

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That’s why it’s important to try and make your home as energy efficient as possible, especially as the cost of living crisis drags on. Upgrading to a composite door can help reduce your bills in the long term.

Saving Money with Composite Doors

Your house may lose excess heat through the front door, especially if it’s old and worn. As much as 30% of lost heat can be attributed to gaps around doors and windows, so if you’re feeling a draft, it’s time to buy a replacement door. Traditional timber doors have a certain rustic charm, but if you want a more comfortable house, it’s worth swapping to a composite door.

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Composite doors typically have lower u-values than their wooden counterparts, so they are more thermally efficient and retain more heat. The current building regulations require replacement doors to have a u-value of 1.8 W/m² or less, but most composite doors are lower than that. 

Once a composite door is installed, your heating bills will drop, and you’ll save more money over the winter. As a bonus, they also help regulate the temperature in the summer, so you won’t need the air con switched on all the time.

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 door glazing

What Are Composite Doors?

By now, you’re probably wondering how this works. What about composite doors makes them a better choice for saving energy? It’s all down to how they’re made. 

Unlike old-style timber doors, composite doors are made with several different materials that are compressed and stuck together under high pressure. Here at Endurance, our composite doors are made using Kerto Laminated Veneer Lumber, a solid timber slab made with 17 laminations. These are cross-layered to make a door so strong it can withstand direct hits from sledgehammers.


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This means that composite doors are thicker and denser than old-style doors and consequently, better at retaining heat. If your door has windows included, these can also be fitted with double-glazing. 

They’re also fitted with a moisture barrier system which prevents water damage and reduces the chance of warping. Invest in one of our composite doors, and you’ll save money on repairs as well as the heating.

More than a Door

Here at Endurance Doors, we are very proud of our composite doors. They are a cost-effective way to reduce your carbon footprint and keep your home warmer during the colder months. 

We have a wide range of styles available, so why not start your project today with our online door designer? Alternatively, you can get in touch with us via email at marketing@endurancedoors.co.uk or call 01652 659259. Our experts will be happy to answer any questions. 

How Are Composite Doors Made?

17 Laminations

Our composite doors are made up of 17 laminations with a solid timber core. We use BBA accredited, engineered LVL (laminated veneered lumber.). Our 48mm thick core offers exceptional stability and eliminates the possibility of warping over time. Each door is manufactured with an integrated Moisture Barrier System in the base of the door which protects your door from water damage, delamination and maintains its integrity, avoiding common problems with composite doors.


Door Skin

Endurance composite doors feature a laminated door skin with a highly weatherproof and durable acrylic layer, offering exciting vivid colours and luxurious wood effect designs that perfectly match the door frames into which they are installed. Our replacement front doors are finished with a foiled 3D Cool Skin that features an embossed woodgrain texture to offer a surface that won’t crack or fade. Available in 16 colours ranging from neutral shades to bold bright tones, you can create a composite door solution that is colour lasting and will continue to look great even after years of use. Once you’ve selected the style, and design of your new door and applied your preferred colour you can add finishing touches to your composite door with a wide selection of hardware and security options. Select from handles, knockers and letter plates to personalise your door and make it your own.

Hardware Options

With 10 hardware colours to choose from including Gold, Graphite, Antique Black and Chrome you’ll be spoiled for choice when it comes to putting the final touch to your composite door. Created to blend into the surroundings of your property and to complement your existing décor, we know that you’ll be pleased with the finished result.

what are the benefits of the solid timber core external doors

Solid Timber Core

The Endurance door has a solid core unlike others. This robustness means there are more advantages and far fewer problems with composite doors from us compared to other companies.

With 48mm thick cross-bonded veneered laminated timber door lead, Endurance composite doors deliver lateral strength and unrivalled stability.

We use Kerto LVL for our solid core, a material which is incredibly strong and dimensionally stable timber beam. The makeup of our solid core is designed so that it can be cut to any height or width without affecting its integral strength.

Our solid core competitors use cores that incorporate less dense mixed species woods with a stile and rail subframe. The core’s strength comes from the outer subframe in these doors. A narrow or short door involves cutting into this subframe and cutting away the strength of the door. These doors don’t always hold their shape when facing the temperature changes of British weather and central heating.

We are so confident in the quality of our Endurance composite door we offer a 3mm bowing guarantee on our doors.

Build Your Door
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.

Design Your Door