Opening the Door to Energy Efficiency

Bifold doors are cool to look at. They can be installed in new or renovated buildings. If you’ve seen them on TV or considered the many options, you probably know how they can open up rooms and brighten things up. Configurations can be chosen based on specific home designs. With more sunlight let in, you will find the room heats up. This contributes to another aspect of bifold doors – energy efficiency.

How energy efficient the door is depends on a few factors:

• Proper installation.
• Manufacture to British standards related to sealing, for example.
• Absence of water leaks and draughts.


There are many tests to determine the energy efficiency of frameless glass bifold doors. Reputable suppliers will indicate these have been performed and you should ask about testing in relation to wind speed resistance, air tightness, weight capacity, CE marks, and U-value. This is the measure of how much heat is lost and used to gauge the quality of glazing; always look for products with the lowest number – preferably under two.

Aluminium clad coatings should be tested for their susceptibility to rust. Also check on the quality of the glass. Toughened glass provides many benefits, including the ability to trap heat.

Efficiency and Bifolds

You can convert an entire wall into one huge bifolding door and see a dramatic increase in energy efficiency. During a cold day, you’ll want to keep the door closed. If the installation is done properly, then you should start benefiting right away, and always look for a reputable, experienced supplier.