What Are The Most Energy Efficient Patio Doors?

If you’re thinking of upgrading the doors and windows in your home, you may wish to consider adding a set of new patio doors to your shopping list…

With the drive to make homes more energy-efficient – saving money and the planet – what should you look out for when choosing new patio doors?

Check out our guide to the most energy-efficient patio doors and find the best option for you and your home.

How is efficiency measured?

Modern patio doors come in a range of materials and finishes, and some are more energy-efficient than others, although most modern materials are becoming more and more eco-friendly.

In addition, Window insulation is measured as a U-value or U-factor, so all products will come with their own U-Value.

Check with your supplier or installer for the best option for your needs.

Patio Door Styles

  • Patio doors have come a long way in recent years, and there is so much choice available when it comes to design, cost, the space required, and the style of your home.
  • French windows are a set of two hinged doors coming together in the middle and fastening shut with a lock.
  • Bi-fold doors are set of usually a minimum of three leaves, which concertina fold along a track to open fully with no adjoining post in the centre.
  • Sliding doors are the most usual design when we think of patio doors, and are a great option if there is no space for a bifold door and you want to open up space more than you can with a French Door.

Patio Door Materials

As with most things around the home if you choose quality materials and professional installation, whichever style you go for, they will function correctly and efficiently.

You have a few options when it comes to materials:


It may seem like the more expensive option, but custom-built timber patio doors are a timeless option and, if well-maintained annually, will retain their organic beauty and efficiency for many years.

In addition, The natural insulating properties of wood mean that well installed, sealed, and treated wooden doors can be super-efficient and achieve a low U-value.


Aluminium as a construction material has improved so much over the years, transforming from a highly inefficient conductor to one of the best insulators around.

New designs include a plastic thermal break within the frame, which makes it exceptionally efficient offering excellent U-values.

It is also very strong, so is great for larger installations, where aesthetics are just as important as efficiency.

Add to that, the material is highly recyclable and available, and they’re the eco-friendly choice too.


uPVC patio door frames offer probably the best all-round efficiency ratings.

With thicker frames, due to its lack of strength, and less glass, due to potential weight issues, the new internal multi-chamber design consists of several layers tightly sealed to retain the warmth.

Available in a range of finishes, it’s a great choice for design and efficiency.

Remember, there are also other factors to consider when evaluating the efficiency of your patio doors, from the experience of your installer through to triple glazing and built-in blinds.

So think carefully about what’s really important to you and your home before you choose your style.


For more information on the right type of patio door for you call us free today on 0800 1777 771.