When it comes to keeping your home warm and efficient, the quality of your windows and doors makes a bigger difference than you might think. A UK retrofit case study revealed that existing double-glazed windows and composite doors can account for up to 25% of a home’s fabric heat loss.
That means a quarter of the warmth you are paying for could be slipping away through poorly performing doors and windows. It highlights just how important your front door really is.
Composite Door Manufacturing: The Endurance Process Explained
All the timber used in our doors is sourced from sustainable Finnish forests, carefully managed to balance the social, economic and ecological needs of both present and future generations. To give back more than we take, four new seedlings are planted for every single tree that is harvested.
At the heart of every Endurance door is a 48 mm solid timber core, made from around 17 engineered timber laminates. This gives the door outstanding strength and rigidity, far surpassing foam-filled alternatives, and ensures your door stays secure, durable and reliable for years to come.
The surface finish on an Endurance door does more than just look good. We use high-quality foiled uPVC skin with CoolSkin technology that reflects UV rays instead of absorbing them. That means your door keeps its colour, resists cracking and avoids fading even under strong sunlight. A built-in moisture barrier at the base of every door adds extra protection against warping, rotting or bowing. Together, these features keep your door looking sharp and performing well year after year.
At Endurance, every door goes through a series of checks before it leaves the factory. The solid timber core is inspected for strength and thickness. Hardware like locks, hinges and glazing is tested to ensure it performs to our highest standards. Durability is also assessed, with the finish and weather resistance carefully checked. Only when a door passes every stage is it approved for dispatch. This way, homeowners can be confident that their new door will perform reliably for years to come.
Door Delivery Made Simple: Endurance Composite Doors Ready to Fit
Every Endurance door arrives at your home ready to fit. This means there are no delays on the day. Your chosen installer can get straight to work, and you can start enjoying your new door right away.
Endurance Composite Door Installation and Warranty Explained
Every Endurance door comes with a ten-year manufacturer’s guarantee, which is held by your installer once they purchase from us. If you experience any issues with your door, you can report it to them directly for support.
Design Your Dream Door Upgrade Today
If you are ready to upgrade your front door, why not try our virtual door designer? It puts you in control of every step and helps you create a door that is the perfect fit for your home and style.
