endurance composite door and frame installation

Adjusting A Composite Door

Here at Endurance, we make composite doors that you can rely on. They’re built to withstand severe weather conditions, repeated use and even direct hits from sledgehammers. When you install one of our doors, you can trust that it will keep performing well and looking amazing for years to come.


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It speaks to the quality of our work that the most common maintenance query we get is how to adjust a composite door. Luckily, it’s a relatively simple job to sort out and you don’t need any serious technical knowledge or expertise to do it. In the unlikely event that your door doesn’t sit in the frame properly, here’s our brief guide on how to fix it. 

Why Can’t I Close My Door Properly?

You’ll get the first hint your door needs adjusting when it doesn’t shut as smoothly. If it catches on the frame and requires extra effort to close, it most likely isn’t sitting in place properly. Provided there’s no debris jamming the frame, this can be solved by adjusting the hinges. 

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The first thing to do is check that it’s out of alignment. Place a spirit level on top of the door and see if the bubble sits in the middle. If it doesn’t, it’s time to get the toolbox from under the stairs and adjust your composite door hinges. You’ll need:

  • Screwdriver
  • Hammer
  • Allen key (optional)
  • Tape measure (optional)
how to adjust hinges on a composite 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.

Adjusting Composite Door Hinges

Start by checking what type of hinge you have. The majority of doors use standard hinges, which have three screws in them; two holding the door in place and one attaching the hinge to the frame. Alternatively, you might have a long, thin hinge that runs the entire length of the door (a piano hinge) or hinges with ball bearings in them. These aren’t too common though so we’ll focus on the regular ones.


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If the door is catching on the top of the frame, you’ll need to lower it by adjusting the bottom hinge. On the other hand, if it’s catching the bottom of the frame, you’ll have to raise it by adjusting the top hinge. To do this, loosen the screws (take care not to remove them entirely) and then tap the relevant hinge to move it either up or down. 

Next, close and open the door a few times to see if it sits in the frame better. If it’s still catching, repeat the process until it fits snugly. Tighten the screws on the hinge plates and that should be it. Providing everything has gone well, your door should be operating nicely again. 

The only thing to bear in mind is what to do if the door catches but the spirit level doesn’t show it out of alignment. If that’s the case, it could be because the hinges are screwed in too tight. Loosen them up slightly and it should resolve the problem, but if it persists, contact your original Endurance Installer. 

Making sure your composite door functions properly is important, as a misaligned door isn’t as secure or thermally efficient. If it does happen, it’s a relatively quick fix and the only thing to be aware of is not removing the screws, as it can be irritating to lose one. 

If you’ve got any questions about your next composite door project, or are feeling inspired to install a new one, why not get in touch with Endurance? You can reach us on 01652 340 340, or check out our online door designer. We can’t wait to work with you.

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.