How to Choose the Right Cavity Sliding Door System: A Complete Guide for Homeowners, Builders & Designers

Selecting the right cavity sliding door system can dramatically improve the functionality and appearance of your interior space. Yet many homeowners and even some builders aren’t fully aware of the differences between standard and premium-grade systems—or how these differences impact long-term performance.

1. Start With the Door Weight & Material

Different cavity systems are engineered to support different door loads. Selecting the wrong system can cause door sagging, noisy operation or structural failure.

Here is a quick breakdown of Premium Sliding Doors systems:

Recommended pairings based on door type:

✔ Hollow core timber door → Premium 65
✔ Solid timber door → Premium 125 or Premium 150
✔ Tall custom doors (2400–3000mm) → Premium 150
✔ Aluminium-framed glass doors → Premium 125 or Premium 150
✔ Frameless glass doors (10–12mm) → Premium 125 or Premium 150

Rule of thumb:
Always choose a heavy-duty system when in doubt. Oversized, tall or dense doors perform best on Premium 150.

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2. Wall Type & Plasterboard Thickness

The wall structure determines which cavity frame and finishing kit you should select.

Key considerations:

Stud Wall Size

• 76mm stud walls → generally standard residential walls

• 90mm stud walls → preferred for heavier doors & premium finish

• 76/92 mm Commercial steel studs → used in offices, healthcare, apartments

Plasterboard Thickness

• 10mm plasterboard → standard homes

• 13mm plasterboard → commercial, hospitals, premium acoustic builds

Finishing Style

Your finish type impacts jamb selection and cavity construction:

Premium Sliding Doors systems are designed to integrate cleanly with every finish option, including architectural flush jambs and high-end shadowline reveals.

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3. Door Configuration & Opening Requirements

Before selecting your cavity system, determine how the door will open.

Available configurations:

• Single cavity slider — standard rooms, bathrooms, laundries

• Double cavity slider — large openings, living spaces, offices

• Corner-meeting sliders (90°) — luxury open-plan transitions

• Full-height sliders — architectural feature doors

• Soft-close / soft-open mechanisms — optional upgrades

Each configuration requires different track lengths, jamb details and structural reinforcement.

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4. Additional Features That Improve Performance

Enhance user experience and long-term reliability with these optional upgrades:

✔ Soft-Close

Prevents slamming and protects the door — recommended for homes.

✔ Soft-Open / Soft-Close

Premium feel; ideal for large or heavy doors.

✔ Synchronized Sliding (Double Doors)

Both doors glide together smoothly — perfect for wide openings.

✔ Zero-Clearance Head Tracks

For modern full-height, flush-ceiling installation.

✔ Wet-Area Compatibility

Aluminium cavities + villaboard enable installation in bathrooms & tiled areas.

 

5. Oversized Door Applications

For ceilings above 2700mm or large architectural doors, choose systems rated specifically for oversized loads to ensure stability and long-term smooth running.