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Do front doors with glass panels offer good U-values? | How to choose a thermally efficient front door

John Collins - Managing Director

Author: John Collins - Managing Director

Front doors with glass panels allow natural light to flood into your home, while providing you with a visually aesthetic entrance to your property. So, do front doors with glazing offer good thermal efficiency and U-values?

Here, we discuss the benefits of front doors with glass panels and whether they provide good thermal efficiency. We also take you through the U-values provided by Vufold’s front doors with glazing.


A front door with glass panels provides an attractive style that increases the aesthetic appeal of the home and front entry area, while allowing a huge amount of natural light into the hallway or porch. Front doors with glazing also appear modern and bright, providing a vibrant finish to your home’s exterior.

Front doors with glass panels are also available in a huge range of designs and sizes, depending on your preferred aesthetic. Including a larger glass panel can create a more modern, minimalistic feel, whereas a smaller glass panel can provide a more traditional style:

Modern Vufold front door Traditional Vufold front door

Do front doors with glass panels offer good U-values?

Glazed front doors with glass panels can provide excellent thermal insulation and low U-values when high-quality glass is used, such as double or triple glazing with low-emissivity coatings. These features enhance insulation and maintain thermal efficiency while allowing natural light into your home. Shop our range of front doors with glass panels here.

How can I determine whether my front door with glazing is thermally efficient?

You can find out whether your front door is thermal efficient by considering factors such as its glazing option, U-value, material composition, insulation, and installation quality. Choosing a high-quality supplier can also ensure your door provides optimum thermal efficiency. As a general rule - a low U-value indicates better insulation. Choosing the highest-quality materials such as solid wood or composite, double or triple glazing, and proper seals help to improve your door’s thermal performance.

Consider the following factors when choosing a type of front door:

Do some research into the material of the door and its benefits

The thermal efficiency of your door largely depends on the material used. While materials such as uPVC may often be a cheaper option than options such as composite – bear in mind that they often don’t offer the same level of thermal efficiency. Ensure you check the U-value your door provides on the manufacturer’s website, and choose high-quality materials such as composite, aluminium doors with thermal breaks, or solid timber doors.

Do some research into the different types of glazing

Double or triple glazing can significantly improve insulation, with triple glazing taking the lead in terms of providing exceptional thermal efficiency. While often offering excellent U-values - triple glazed doors are often slightly more expensive than double glazed; so, it is vital to consider your priorities.

Consider additional features such as thermal breaks and insulated cores

Energy efficient front doors also often have features such as thermal breaks, multiple seals, and insulated cores to enhance their performance. Shop Vufold’s thermally efficient front door range today.


Our pick:

Shop Vufold’s traditional composite front door range

Vufold’s traditional composite front door
  • Thermally Efficient - U Value of 1.4 W/m2K (Energy Rating B)
  • Safe and Secure - PAS 24 in line with Document Q tested
  • Easy Install - full fitting kit included
  • Guarantee - 10 Years.

View our traditional composite front door range.

What types of front doors with glass panels can achieve the best U-values?

Composite front doors

Composite doors, crafted from a blend of materials including wood, uPVC, and insulating foam, offer exceptional U-values. These doors are predominantly constructed with Glass Reinforced Plastic (fibreglass), shaped into panels and melded with an internal frame containing uPVC and a wooden exterior frame. The innovative combination of these materials, along with an injected polyurethane insulating foam core, contributes to their impressive energy efficiency, ensuring low U-values.

Shop our composite front door range here.

Solid wooden front doors

Wooden front doors are renowned for exceptional natural insulation due to their thick cores and effective sealing. These doors guarantee low U-values, ensuring optimal energy efficiency for your home. Browse through our selection of wooden front doors to find the perfect blend of quality and insulation.

Aluminium front doors with weathertight seals and thermal breaks

Vufold's aluminium front doors are expertly designed with double or triple glazing to minimise thermal transmittance. These doors boast a high-density foam core and polyamide thermal breaks, ensuring superior insulation and reduced heat loss. Vufold’s Designer aluminium front door range provide impressive U-values from only 1.2W/m2K, making them a solid choice if you are looking for a durable front door that offers exceptional thermal efficiency. Visit our Designer aluminium front door range if you are looking for a triple glazed front door.


Each door in our Designer Door range is meticulously tailored by our skilled craftsmen, guaranteeing elegance, high-performance, and utmost security for your home. With an extensive selection of designs, you'll find the perfect match for any style of house or apartment.

  • Extensive 10-year manufacturing guarantee.
  • Multi point locking system, 3-star security cylinder and laminated glass as standard.
  • Triple glazed.
  • Safety and security.
  • High-density foam core and polyamide thermal breaks.

Shop our Designer aluminium front doors.

Front doors with glazing from Vufold | What U-values can Vufold’s front doors offer?

At Vufold, we offer front doors with glass panels in the following materials, all providing exceptional U-values:

Composite front doors with glazing

Composite provides exceptional quality and durability, ensuring your doors serve as a long-term investment. You can enjoy double glazing and excellent thermal performance with our range of composite front doors. At Vufold, we offer both a traditional and contemporary range of composite doors, and our doors offer a PU Foam core for the best levels of thermal efficiency. Keeping your home warm as we reach the cooler months – our composite front doors offer impressive U-values of 1.4 W/m2K (Energy Rating B).

Aluminium front doors with glazing

At Vufold, we offer a range of aluminium front doors that are available in triple glazing, in addition to aluminium front doors with double glazing. With a high-density foam core and polyamide thermal breaks, every Smart Designer aluminium door is exceptionally thermal efficient and will help reduce energy bills. Our triple glazed Designer doors offer U-values from 1.2W/m2K, whereas our double glazed Signature front doors offer U-values from 1.4W/m2k.

Timber front doors with glazing

Offering a more traditional feel for your home, Vufold’s wooden front doors are made with toughened safety glass and fitted with double glazed panels to ensure excellent thermal efficiency. Our timber doors are available with side panels to both sides or to one side, and side panels can be combined with either solid doors or glazed front doors. At Vufold, our timber doors offer U-values of 1.6W/m2K when fitted with our optional frame kit.

Infographic saying 'Save on energy bills with Vufolds Aluminium Front Doors'


At Vufold, our front doors offer exceptional energy-saving performance for thermal efficiency, enhanced security and a 10-year guarantee for added peace of mind. Our affordable and transparent pricing and seamless configuration system allow you to install a beautiful, strong and secure front door in your home within a matter of days. Other benefits of choosing Vufold include:

  • Outstanding thermal efficiency

  • Enhanced security features

  • Easy installation and maintenance

  • Sleek and stylish door front door range, offering various materials and colours. Shop our complete range of front doors here.

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Richard Collins - Operations Director


John Collins - Managing Director

About John Collins

John has built Vufold into a unique online door and window company and has spent 20 years bringing innovative products and designs to fruition, recognising niches in the market and placing them in the likes of Wickes and Travis Perkins, he started Vufold in order to sell them directly. John founded Vufold and has amassed a wealth of experience in product design and development, and in particular timber-based products

Read more about Richard Collins