Question 1

How much do aluminium patio sliding doors cost?

Accepted Answer

Patio sliding door prices depend on the number of tracks, overall size, colour and glazing specification. As a guide, a standard 2-track patio slider in a stock colour starts from around £1,500 unglazed. Fully glazed options with high-performance double glazing typically range from £2,200–£4,000 depending on dimensions and configuration. Mazuli offers manufacturer-direct pricing with no middleman markup — call 0113 827 5596 for an all-inclusive quote within minutes.

Question 2

What sizes do aluminium patio sliding doors come in?

Accepted Answer

Mazuli patio sliding doors are custom-manufactured to your exact measurements. Sash widths range from 600mm to 2,500mm, with heights from 630mm up to 3,000mm. We offer 2-track and 3-track configurations, so the total opening width you can achieve depends on the number of panels and tracks specified. For wider openings beyond what a standard patio slider can handle, consider our COR Vision sliding door system.

Question 3

What is the difference between patio sliding doors and bifold doors?

Accepted Answer

Patio sliding doors slide horizontally along tracks, stacking behind each other when open — they don't fold. This means they need less clearance space and suit openings where you want large uninterrupted glass panels. Bifold doors fold concertina-style and stack to one or both sides, creating a fully open aperture. Sliding doors tend to offer better thermal performance per panel and are simpler to operate day-to-day, while bifolds provide a wider clear opening. Mazuli manufactures both — call us to discuss which suits your project.

Question 4

What U-value do aluminium patio sliding doors achieve?

Accepted Answer

Our Cortizo aluminium patio sliding doors achieve a U-value from 1.4 W/m²K with standard double glazing, comfortably exceeding the current Building Regulations Part L requirement of 1.6 W/m²K. With triple glazing, U-values as low as 1.0 W/m²K are achievable. The thermally broken polyamide profiles prevent cold bridging while maintaining the structural strength aluminium is known for.

Question 5

How long does it take to get patio sliding doors delivered?

Accepted Answer

Mazuli offers some of the UK's fastest patio sliding door lead times. Standard colour unglazed doors are ready within 2–5 working days. Fully glazed doors in standard colours ship within 6–10 working days. RAL colour orders take approximately 2 weeks, and woodgrain finishes 4–6 weeks. All orders are delivered on our fleet of vehicles to a fixed, guaranteed delivery date that will not change.

Question 6

Are aluminium patio sliding doors secure?

Accepted Answer

Yes. Mazuli patio sliding doors feature multi-point locking systems as standard, with anti-lift blocks to prevent panels being lifted from their tracks. The glazing is internally beaded, meaning the glass cannot be removed from the outside. For taller doors (above 2,050mm), 4-point locking is fitted for enhanced security. Secured by Design accredited hardware packages are available on request.

Question 7

Can I buy patio sliding doors unglazed?

Accepted Answer

Yes — our unglazed patio sliding doors are a popular choice for trade installers and contractors who prefer to source their own glass or have specific glazing requirements such as toughened, laminated, self-cleaning or acoustic glass. Unglazed doors are supplied fully assembled with frames, hardware and locking systems, ready for you to glaze on-site. Unglazed orders benefit from our fastest lead time of just 2–5 working days in standard colours.

Question 8

Do patio sliding doors need planning permission?

Accepted Answer

In most cases, replacing or adding patio sliding doors falls under Permitted Development and does not require planning permission — provided you're not in a conservation area, listed building, or making changes to the front elevation in certain boroughs. Building Regulations approval is always required to ensure the doors meet thermal performance (Part L), structural (Part A) and accessibility (Part M) standards. Mazuli patio sliding doors exceed Part L requirements with U-values from 1.4 W/m²K.

Aluminium Patio Sliding Doors

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Why Choose Mazuli Sliding Doors?

2, 3, 4 or 6 Panels, Made to Measure

2 panels

3 panels

4 panels

6 panels

Finish It Your Way

Handles

Trickle vents

Low thresholds

Cills

7 Stock Colours + Any RAL

White

Glazed or Unglazed, Sealed Against the Weather

Fully glazed

Unglazed

Secure as Standard, Ready for Building Control

Security

Building Regulations

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Sliding Doors technical documents