Endurance composite doors at OnTime Windows
At OnTime Windows, we are proud to offer the Endurance range of composite doors, combining cutting-edge design, exceptional durability, and superior security. With over 85 stylish designs, 19 vibrant colours, and an extensive range of glazing and hardware options, you can create a door tailored to your home and lifestyle. Whether you’re looking for timeless elegance, rustic charm, or modern sophistication, Endurance doors provide the perfect solution.
The Perfect Entrance for Every Home
Why choose endurance doors?
Built to Last
Every Endurance door features a 48mm solid timber core, making it up to 10% thicker than most composite doors on the market. This heavyweight construction not only provides a reassuring feel but also guarantees unmatched durability, ensuring your door stands the test of time. Unlike other composite doors, Endurance doors resist warping, twisting, or bending, maintaining their integrity for years to come.
Exceptional Security
Security is at the heart of every Endurance door:
- High-Security Multi-Point Locking Systems: Tested to PAS 24 Security Standards.
- Sold Secure Diamond Grade Locking Cylinders: Designed to withstand even the most determined intrusions.
- £2,000 Security Guarantee: Your peace of mind is our priority. If a burglar gains access through lock snapping, Endurance will compensate you.
Energy Efficiency and Comfort
Endurance doors not only protect but also insulate. The solid timber core combined with advanced CoolSkin® technology ensures your home stays warm, reducing energy costs. Plus, the soundproof construction keeps your living space quiet and serene, shutting out external noise.
Endurance composite doors
Customisation Options
We believe your door should reflect your style and personality. The Endurance range offers endless customisation possibilities:
Colour Palette
Choose from 19 stunning shades, including bold Anthracite Grey, earthy Chartwell Green, and classic Raven Black. You can even opt for dual colours, with different finishes for the interior and exterior of your door.
Glazing Options
From intricate etched designs like Virtue to modern styles like Clear or Riviera, Endurance glazing options let you balance light and privacy seamlessly. All glass is thermally toughened for safety and efficiency.
Hardware Accessories
Add the perfect finishing touch with premium hardware options, including:
- Handles in various styles and finishes.
- Elegant knockers, from classic urns to nature-inspired designs.
- Durable letterplates and escutcheons. All accessories are rigorously tested for long-lasting performance and style.
Get started
The process is simple
2
Consultation visit
At this stage, one of our experienced team members will schedule a visit to your property at a time that is convenient for you.
3
Final quote
After your expert consultation, we’ll provide a final quote for the work, this will be delivered by your preferred contact method and left with you, we are not a pressure sales company.
4
Technical survey
When an order is placed, we will then send our technical surveyor who will take the final manufacturing measurements and specification for your order.
5
Installation carried out
All installations are carried out by highly trained professionals who ensure flawless results every time.
You ask, we answer
We’ve got answers to your most pressing questions. Don’t forget, if you have any other questions, you can always contact us.
Yes, composite doors—especially those built with a 48mm solid timber core like Endurance doors—are known for their strength. Endurance doors, for example, are 10% thicker than many other composite doors on the market, giving them a reassuringly heavyweight feel. This design not only helps them stand up to everyday wear and tear but also resists issues like warping, twisting, or bending, ensuring they remain durable for years to come.
Both door types have their own advantages, and the choice often depends on your priorities. uPVC doors are typically more budget-friendly, require little maintenance, and provide decent thermal efficiency. Composite doors, such as Endurance Doors, tend to offer superior strength, security, and insulation due to their solid timber core construction. They also have a more substantial feel and often come in a wide range of styles and finishes. If you value extra durability and a premium appearance, a composite door may be the better option. If cost is the primary concern, a uPVC door could be more suitable.
Yes. Endurance Composite Doors, in particular, are known for their robust construction. They feature a 48mm solid timber core—which is up to 10% thicker than many other composite doors—making them highly resistant to forced entry and everyday wear. Thanks to their reinforced hinges, robust locking mechanisms, and strong materials, composite doors generally offer a high level of security and peace of mind.
Not all composite doors are automatically fire rated. Standard composite doors focus primarily on security, durability, and insulation. However, if you need a fire-rated solution (for instance, an FD30 specification door), you can often request a specifically tested and certified fire door.
At OnTime Windows, we currently don’t supply or install fire-rated doors. However, we’re happy to guide you toward trusted providers who can help.
Ready to get started? Get a quote now!
Our Doors
Explore our full range of Doors
Take a look at our eclectic range of beautiful doors. If you would like a quote, a member of our team will be more than willing to come and measure up for your new door.
