Bifold Doors vs Sliding Doors Cost: Which Gives Better Value?

If you’re weighing up bifold doors vs sliding doors cost for a kitchen extension, garden room or patio upgrade, the honest answer is that it depends on your opening and what you want from it, not just which door is cheaper to buy. Both are popular ways to open up a rear elevation, but they’re priced differently, use different hardware, and suit different budgets. This guide compares our current stock pricing for both door types, explains what actually drives the cost of each, and helps you work out which option gives better value for your specific project.

How Much Do Bifold Doors Cost in 2026?

Aluminium bifold doors typically cost between £2,000 and £7,000 for supply and standard installation, depending on panel count, opening size, glazing and finish. Our current stock XP10 bi-folding door starting prices, supply-only, are:

These are supply-only prices for our stock pre-made XP10 range, with selected sizes dispatched within 5 working days. Checking your opening against our standard bifold door sizes first is the quickest way to keep cost and lead time down; our guide to buying stock bifold doors covers what else to check. Add professional installation, typically £550 to £1,000 or more, and most projects land within the £2,000-£7,000 range covered in our full bifold doors cost guide. If you want the heritage-style finish, our XP10 Steel Look range, including the 3-panel Steel Look door, adds roughly £270 to £540 on top of these starting prices, depending on panel count, for the same frame, locking and glass specification, as explained in our steel look cost guide.

How Much Do Sliding Doors Cost in 2026?

Sliding doors are priced differently to bifolds because the twin-track mechanism and larger individual glass panels change what goes into the system. As a guide, aluminium sliding patio doors typically start from around £3,500 to £5,500 as a base price, before size, glazing upgrades or installation are factored in. Our XP Glide and XP Slide LS25 ranges both use a lift and slide twin-track system, with sightlines of 20mm and 25mm respectively, so fewer, larger panels carry more glass and hardware per panel than an equivalent bifold door. For the full breakdown of what moves sliding door pricing up or down, see our guide to 8 factors that impact the cost of sliding patio doors.

What Actually Changes the Price, Whichever Door You Choose?

Both door types are priced on broadly the same factors, even though the hardware is different. Opening size and panel count have the biggest effect for bifold doors, since every extra panel adds frame, glass and running gear. For sliding doors, the biggest factor is usually the glass itself, since fewer, larger panes cost more per square metre than the equivalent area split across several bifold panels. Beyond that, both ranges are affected by glazing specification, colour and finish, and hardware choice.

Bifold Doors vs Sliding Doors Cost: Which Gives Better Value?

If your budget is the main driver, a compact bifold door usually wins on upfront price. Our stock 3-panel XP10 starts from £2,067.50 supply-only, which sits comfortably below the £3,500-£5,500 base price range for aluminium sliding doors. The gap narrows as you add panels. A 6-panel XP10 starting from £4,109.00 is closer to sliding door territory once you factor in a similar opening width.

Sliding doors tend to earn their keep where uninterrupted glass matters more than a full-width opening, for example in a narrower rear elevation, a side return, or a garden room wall where you want maximum light without the folding mechanism taking up wall space when open. Bifold doors earn their keep where you want the whole opening to disappear, such as a wide kitchen extension or a garden room that needs to feel fully open in summer.

Neither door type is the universally ‘better value’ choice. The right comparison is pound-for-pound at your actual opening width, which is why checking current stock pricing for your specific size, rather than relying on general price ranges, gives the most accurate answer.

Does Supply-Only vs Supply-and-Install Change the Comparison?

Yes, to an extent. Supply-only pricing for either door type reflects the hardware, aluminium and glazing rather than labour, so a competent DIYer or builder fitting a stock XP10 bifold or XP Glide sliding door themselves can keep the overall project closer to the supply-only price. Add professional installation at £550 to £1,000 or more, and the gap between a mid-range bifold and a sliding door of a similar width narrows further. For the full breakdown of what supply-only versus supply-and-install actually changes, see our guide to supply-only vs supply-and-install bifold doors cost.

Expert Insight from Express Bi-Folds Direct Managing Director Steve Bromberg

Steve Bromberg, Managing Director at Express Bi-Folds Direct, has worked at the forefront of the aluminium bifold door industry since 2007. With products manufactured at the company’s 200,000 sq. ft Leeds facility, he brings direct experience in aluminium glazing, product quality, lead times and the practical needs of UK homeowners, builders, and trade customers.

“Customers often come to us assuming one door type is simply cheaper than the other, but it’s really about panel count and glass area,” explains Steve.

“A bifold door spreads the same opening across more, smaller panels, which is why stock XP10 prices can sit below a similarly wide slider. A sliding door uses fewer, larger panes, so more of the cost sits in the glass and running gear than the frame count. Neither type is cheaper across the board, it depends on your opening width and how many sightlines you want to live with.”

“We’d always recommend comparing actual stock prices for your size before deciding, rather than assuming either door type wins on cost.”

Need a Fully Bespoke, Supply-and-Install Service?

Everything in this guide covers our supply-only and self-fit focused range at Express Bi-Folds Direct, built for homeowners, DIYers and trade customers who want to manage their own installation. If your project needs a fully bespoke size, specialist glazing, or a complete supply-and-install package including survey and fitting, our sister company Express Bi-Folding Doors can take care of the whole process, for both bifold and sliding door options, through their showroom and project team.

If price isn’t the only factor in your decision, our guides to which door suits your space and which offers better insulation cover the other side of the decision. For more buying advice, browse our full guides section or check our FAQs before you order.