Sliding vs Stacking Aluminium Doors: Which Is Better for Your Patio?

Spring has a way of making the patio feel like part of the house again. The doors stand open for longer, weekend lunches drift outdoors and suddenly that narrow opening between the living room and garden feels more important than it did in winter.

If you are deciding between sliding and stacking aluminium doors, the short answer is this: sliding doors usually suit homeowners who value simple everyday operation, broad glass views and efficient use of space, while stacking doors suit people who want to open up as much of the wall as the design allows. Neither is automatically better. The right choice depends on the opening, how often you use it, where the panels will sit and what you expect the room to become when the doors are open.

For homes in Nigel and across the East Rand, it is also worth considering Highveld weather, dust, security, floor levels and the way a patio is used through hot afternoons, cool evenings and summer storms.

First, what is the difference?

Sliding aluminium doors

A sliding door has one or more glass panels that travel horizontally on tracks. Depending on the number of panels and tracks, one panel may slide behind another, or several panels may move to create a larger opening. Because the panels remain within the plane of the doorway, they do not swing into the room or onto the patio.

LTE’s aluminium door range includes patio sliding doors and heavier-duty Palace sliding door options, with configurations selected for the opening and intended use.

Stacking aluminium doors

Stacking—also called folding, bi-fold or Vista-fold—doors use multiple hinged panels that travel along a track and fold together at one or both sides of the opening. When fully open, the panels form a compact stack. The trade-off is that the folded panels need a designated parking position.

Compare the opening you get

The biggest practical difference is how much of the doorway remains occupied when the system is open.

With a conventional slider, some panels usually remain in front of the opening. A multi-track arrangement can increase the usable opening, but the panels still overlap. Stacking doors can fold most panels away, creating a much wider passage for movement between the kitchen, lounge, braai and garden.

Ask what the clear opening will be after frames, fixed panels and the stacked panel pack are accounted for. That usable dimension is the one you will experience every day.

Think about daily life, not only the photograph

Brochure images tend to show every panel open on a perfect day. Your more useful question is: how will we use this door on an ordinary Tuesday?

Sliding doors are intuitive for quick trips to the garden, letting the dog out or carrying washing to the line. Stacking doors come into their own when the opening is frequently used at full width. Some configurations can include a traffic or access leaf so you do not need to fold the whole system for one person to pass through.

Allow for the panel stack

When stacking doors fold away, the panels still have to live somewhere. Check that the pack will not interfere with curtains, blinds, wall lights, switches, furniture, a braai counter or a busy walking route. Sliding doors do not need that folding zone, making them efficient for compact patios.

Views, frames and the look of the room

Both systems can deliver generous glass and slim aluminium framing. When closed, a sliding system often presents fewer vertical breaks because it can use larger individual panels. Stacking doors use more individual leaves, so there are usually more frame lines when closed; in return, they can create a more complete sense of openness when folded back.

LTE lists bronze, charcoal, white powder-coated and natural anodised finishes as standard options, with custom colours available on request. Confirm current availability and suitability when the project is quoted.

Weather, water and thresholds

An external patio door is part of the building envelope. Its exposure, sill, drainage, seals, installation and floor levels all influence performance in wind-driven rain. Discuss roof protection, weather direction and whether the patio falls away from the house. A flush-looking threshold must be considered with drainage, waterproofing and accessibility.

South Africa’s National Building Regulations provide the overarching framework for building standards, while glazing requirements are addressed through standards including SANS 10400-N. The correct solution depends on the application. See the National Building Regulations and Building Standards Act.

Glass, safety and comfort

LTE states that its aluminium doors use 6.38 mm PVB laminated safety glass as a standard, with double-glazed laminated options available for improved insulation and security. The appropriate glass type and thickness must still be confirmed for the panel size, location and project requirements.

If afternoon sun strikes the opening directly, discuss heat and glare. Orientation, shading and glazing choice affect comfort, so a specialist should assess the complete opening.

Security is a system

Frame strength, panel engagement, quality hardware, glass, correct installation and the surrounding structure work together. For a slider, discuss anti-lift details and track security. For a stacking system, ask how the access leaf and intermediate panels lock. No glazed opening should be described as impenetrable.

Cleaning and maintenance

Both systems benefit from clean tracks, clear drainage paths and hardware checks when operation changes. Sliding doors generally have fewer moving junctions. Stacking systems have more rollers, hinges and contact points, making gentle operation and timely adjustment important.

A practical comparison

This is a starting point, not a specification. Panel size, exposure, configuration and the existing structure can change the recommendation.

What to include in your quotation request

Send photographs from inside and outside, approximate opening dimensions, whether it is a new build or replacement, preferred colour, weather exposure, access considerations, desired timing and any available drawings. Final dimensions should be professionally checked before manufacture. Browse LTE’s portfolio for configurations you would like to discuss.

Frequently asked questions

Are stacking doors always more expensive?

Not necessarily in every project, but stacking systems typically involve more panels and hardware. Size, glass, finish, configuration, access and installation scope all influence price.

Can I replace a slider with stacking doors?

It may be possible, but the opening, lintel or structure, floor levels, waterproofing and stack position must be assessed.

Which option suits a small patio?

A sliding door is often easier where space is limited. A stacking configuration can still work if its folded panel pack does not obstruct the patio or room.

Which gives the best view?

When closed, sliding doors often have fewer frame lines. When open, stacking doors can clear more of the opening. Decide whether your priority is the closed view, open connection or a balance.

The architectural images in this guide are generated illustrations for educational use and do not depict an LTE customer project.