Should I Choose Bi-Fold or Sliding Patio Doors?

Choosing between bi-fold doors and sliding patio doors can make a big difference to how your home looks, feels and connects with your garden. Both options can bring more natural light into your home and improve access to outdoor spaces, but they work in different ways.

The right choice depends on the size of your opening, the view you want to enjoy, how much of the doorway you would like to open and the style of your property. Here is what to consider.

What is the difference between bi-fold doors and sliding patio doors?

Bi-fold doors are made from several glazed panels that fold back against one another as the doors open. When fully opened, the panels can be moved to one or both sides, creating a wide connection between the house and garden.

Sliding patio doors work differently. Large glazed panels slide horizontally along a track, with one panel moving behind or in front of another. There is no need for the doors to swing into the room or out onto the patio.

In simple terms, bi-fold doors are a strong choice if your priority is opening up as much of the doorway as possible. Sliding patio doors are often better if you want large areas of glass, fewer frame lines and an easy sliding action.

Why choose bi-fold doors?

For homeowners planning an extension, kitchen renovation or open plan living space, bi-fold doors can create a strong sense of openness.

Their main advantage is the size of the opening they provide. When the panels are folded back, most of the doorway can be opened up. This can make the garden feel like an extension of the living space and works particularly well for entertaining during warmer weather.

Aluminium is well suited to bi-fold doors because its strength allows for slim frames and large glazed panels. Collingtons’ aluminium bi-fold doors are designed for durable, smooth operation while helping to maximise natural light.

There are more vertical frame sections across bi-fold doors than you would usually see with sliding patio doors, so this is worth considering if an uninterrupted view is your main priority.

It is also worth noting that Collingtons offer their bi-fold doors in aluminium, while sliding patio doors are available in either aluminium or uPVC.

Why choose sliding patio doors?

Sliding patio doors are ideal for homeowners who want expansive glazing and a clean, simple appearance.

Because the panels slide sideways rather than folding, sliding patio doors do not require extra space inside or outside the property when opened. This can be useful in smaller rooms, on compact patios or where furniture sits close to the doorway.

They are also a good option if you want to make the most of a garden, countryside or coastal view. Large panes of glass can provide wide sightlines when the doors are closed, while slim frames can help keep the focus on the view outside.

Collingtons offer sliding patio doors in aluminium and uPVC. Their aluminium patio doors have slimmer frames, which allows for a greater area of glass, while uPVC patio doors have slightly thicker frames. Both can still bring plenty of natural light into the home, particularly when compared with a more traditional doorway.

The operating mechanisms of aluminium and uPVC sliding patio doors are broadly similar, although the mechanism used for a sliding patio door differs from that of a bi-fold door.

Which option lets in more light?

Both bi-fold doors and sliding patio doors can make a darker room feel brighter by replacing a large section of wall with glass.

Sliding patio doors often have the advantage when closed because they can use fewer, larger panes of glass. This means fewer vertical sections interrupting the view.

Within sliding patio doors, aluminium frames are slimmer than uPVC frames, so aluminium can provide a slightly larger glazed area within a comparable opening.

Bi-fold doors still provide plenty of glazing, particularly with slim aluminium frames. Their biggest advantage comes when fully opened, as the folded panels can leave a much wider section of the opening clear.

Are sliding patio doors better for small spaces?

Sliding patio doors are often the practical choice for compact areas. As they move along their own track, they do not need space to swing open. This gives you more freedom when positioning furniture or garden seating close to the doors.

Bi-fold doors can also work in smaller properties, especially if the aim is to connect the room more closely with the garden. You will need to consider where the folded panels will sit when the doors are open.

Should I choose aluminium or uPVC patio doors?

Material is another important part of the decision, particularly when choosing a sliding patio door, as Collingtons offer these in both aluminium and uPVC.

Aluminium is a popular option for larger glazed doors because it is strong, durable and capable of supporting slimmer frames. This allows for a greater proportion of glass and can suit contemporary properties, extensions and homeowners who want to maximise their view. Aluminium also has a smooth finish and can be sprayed in any RAL colour, giving you a wide choice of finishes to suit your property.

uPVC patio doors have thicker frames and are available in a set range of colours. These coloured finishes have a woodgrain effect, while smooth white is also available. uPVC can be a practical choice if matching existing uPVC windows and doors is important, and it is straightforward to maintain.

The sliding mechanisms used for aluminium and uPVC patio doors are broadly similar, so the main differences between the two materials are usually the frame thickness, appearance, finish and colour choice.

Collingtons offer both aluminium and uPVC patio doors, giving homeowners the opportunity to compare the appearance and specification of each material. Their uPVC doors also come with a 10 year guarantee, providing additional reassurance for your investment.

Which is better, bi-fold doors or sliding patio doors?

There is no single option that is right for every home.

Choose bi-fold doors if you want to create the widest possible opening, regularly connect an indoor living space with the garden and like the appearance of folding glazed panels. At Collingtons, bi-fold doors are available in aluminium.

Choose sliding patio doors if your priority is large panes of glass, wide views, simple operation and a design that takes up very little space when opened. Sliding patio doors are available in either aluminium or uPVC, giving you a choice of frame styles, finishes and colours.

For many homeowners, the decision becomes much easier once they have seen both systems in person and considered how they will use the doors throughout the year.

Talk to Collingtons about your new patio doors

If you are considering bi-fold doors or sliding patio doors in Cornwall, Collingtons can help you compare the available options and choose a design suited to your property.

With aluminium bi-fold doors and a choice of aluminium or uPVC sliding patio doors available, your decision can be based on your preferred look, available space, budget and the way you want your home to connect with the outdoors.

Visit the Collingtons showroom in Helston or get in touch with the team to discuss your new doors and find the most suitable option for your home.