How to choose your bi-fold doors

Depending on the size of the opening you’re looking to fill, you’ll need to think about how many panels you'll want to install for your bifold doors. The options are generally two to six panels, however two panels is a relatively rare occurrence.

Two and three panel doors will concertina to one side, while four door set ups usually have one panel folding to one side and three to the other. Five door configurations will usually all concertina to one side, and for six door configurations there is the option of one panel one side and five the other, or three and three.

When choosing your panels it’s important to consider what your room will be used for, and the amount of space available to accommodate your doors. A larger panel width will mean more room is necessary for their use.

When it comes to bi-fold door frames, there are four main options…

• Hardwood timber
• Softwood timber
• uPVC
• Aluminium

The standard option for bi-fold door frames has traditionally been uPVC, however this has fallen out of fashion as people look for more natural options, like timber or aluminium.

Timber doors come in many different varieties, and can really make a home look beautiful. While hardwood is a durable and high quality option, it may be too expensive for some. Softwood is a cheaper alternative, however it is important to be aware that some of the lower-end models will, when exposed to the environment, be prone to warping over time, which means that their frames may stick or refuse to close.

If you’re looking to invest in high quality bi-fold doors, aluminium also has a lot of advantages. Due to its strength, aluminium allows for slimmer frames, which can create a sleeker appearance. Not only this, but a powder-coated finish means it will never have to be re-coated.

Building regulations dictate the total energy efficiency of a property - which, of course, would include your bi-fold doors. UK building standards require that all external doors must have a U-value of 1.8w/m2k or lower.

However, if you’re looking to make sure your bi-fold doors retain as much heat as possible, there are ways to take your glazing to the next (environmentally conscious) level.

• One of the benefits of opting for aluminium frames is that they are manufactured to include a polyamide thermal break. This creates a thermal break which will stop the cold metal from affecting the temperature of your home, as well as prevent inside heat from being lost.

• Your glazing is another big element that affects insulation. Double glazing will go some way to retaining heat, but for the best performance, we would recommend splashing out for triple glazing. You can also inquire about treatments on offer, as well as the use of argon gas between the panes, which can help insulate your home further.

Learn more: How to create an eco-friendly home

Your budget for your bi-fold doors will be heavily based on the quality of your materials and the installation requirements.

However, as a general rule, you could expect to pay roughly £1,200-£2000 per linear metre of overall frame width. This will be for a good-quality, well-engineered system.

Factors that will affect the price of your bi-fold doors…

• Size of your glazing
• Selected materials
• Quality of your contractor
• Location of your build
• VAT
• Ease of site access