An unexpected consequence of the global pandemic has seen increasing numbers of people taking more of an interest in environmental issues, locally, regionally, and nationally. Coupled with radical new climate change commitments set to put the UK on course to cut carbon emissions by 80% by 2023, boosting the energy efficiency of homes across Wolverhampton and the Midlands has become a top priority for many. After all, heating and powering buildings make up 40% of the UK’s total energy usage.

So, if you like the idea of saving the planet whilst saving money on your energy bills with an energy efficient front door replacement, this is the blog for you!

What type of front door is the most energy efficient?

Black arched Apeer composite door

Composite door from the Apeer range

Generally speaking, modern composite doors tend to come out on top when Wolverhampton homeowners seek the most thermally efficient front door replacement, thanks to the many different materials utilised in their construction.

That said, today’s aluminium, steel, and uPVC entrance doors all combine fantastic energy efficient qualities, it’s just that quality composite doors work that little bit harder to keep your family warmer for longer.

What are energy efficient doors?

External door replacements in England and Wales must meet current Building Regulation standards to make sure they are secure, accessible, and thermally sound, where Conservation of fuel and power: Approved Document L sets the standard for the energy performance of new and existing buildings.

To make sure exterior residential entrance doors deliver good thermal insulation, since October 2010, to comply they must have a minimum U-value of 1.8W/m²K or a door Energy Rating band of E or less.

What does U-value mean?

U-values are a measurement that indicates how easily heat can pass through a specific construction material. Calculated by combining the thermal resistance of the door panel and all its components (the frame, glazing, air spaces, gaps, and fixings), the lower the U-value the easier it will be to maintain a comfortable temperature inside your home.

How can you prevent heat loss in a front door?

To help you out, we’ve put together this energy efficiency comparison table of our front door products that you can quickly refer to whilst doing your own research:

Door Material U-value Energy rating Double Glazing Triple Glazing Unique features
Composite 1.8 A+ ✔️ ✔️ Foam-filled GRP, solid timber, or double rebated options
Aluminium 1.8 A+ ✔️ ✔️ Advanced thermally broken frames
Steel 0.9 A+ ✔️ ✔️ High-density fireboard core
uPVC 1.2 A+ ✔️ ✔️ Multi-chambered frames

U-value vs energy rating – what’s the difference?

A door energy rating is a method of assessing the total energy performance of a door, whereas the U-value measures how well the door panel will transfer heat.

As you can see, all our entrance doors follow or exceed current minimum door efficiency standards.

red door

Steel front door

Energy efficient entrance doors in Wolverhampton, Dudley, Sutton Coldfield & beyond

Talking of sustainability, shopping locally helps the environment by reducing miles travelled which, in turn, lessens air pollution and greenhouse gas emissions. Take your home improvement project to the next level by shopping locally with Wolverhampton Glass, your leading double glazing supplier and installer serving The Midlands.

Use our state-of-the-art composite door designer, read our TrustPilot reviews, browse through our gorgeous installation gallery, or contact us to discuss our energy efficient renovation products further.


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The Sustainium Group is a collection of forward-thinking home improvement companies who are dedicated to delivering home improvements that are both ethical and sustainable. As a company who has sustainability at the core of every process in our business, we’re a valued member of the Sustainium Group. Our products are energy-efficient and sustainable, helping both you and us to reduce our carbon footprint.

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45 years as a local home improvements installer

With over 45 years of industry experience, you can trust that your home is in good hands when you choose Wolverhampton Glass. We are proud to have completed over 25,000 projects across the Midlands in areas like Sutton Coldfield, Stourbridge, Hagley and Lye, so it’s likely that we have installed windows, doors and conservatory roofs on a home down your road.

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