Soffits - the underside of balconies, canopies, awnings, and building overhangs - are one of the most visible parts of a facade and one of the most overlooked during specification. They face the ground, directly in the line of sight for anyone approaching the building. They are exposed to weather from below, moisture from above, and they need to perform for the life of the structure.
Aluminium is a natural fit. It is lightweight (critical for overhead installation), non-combustible, corrosion-resistant, and available in finishes that hold up without maintenance access - which matters, because getting back to a soffit after installation is rarely straightforward.
Why Do Soffits Often End Up as Aluminium - Even When the Walls Are Not?
This is a common pattern on Australian projects. The main wall cladding might be fibre cement, precast, or masonry - but the soffits end up in aluminium. The reasons are practical.
Soffits need to be light. They are fixed overhead, and the dead load pulls directly on the fixings. Heavier materials demand more substantial subframes and stronger connections. Aluminium keeps the weight down - element13 panels weigh 8.13 kg/m², manageable for overhead fixing without over-engineering the support structure.
Soffits also need to look clean from below. Joints, fixings, and panel edges are all visible at close range. Aluminium battens and panels provide a precision-finished appearance that suits the underside of a building.
What Are the Product Options for Soffit Cladding?
Valmond & Gibson supplies three product types that are regularly used in soffit applications, each suited to a different design intent.
conneQt Aluminium Battens
The most common soffit solution. conneQt battens create a clean, linear appearance with consistent spacing. They are lightweight, simple to install overhead, and the gaps between battens provide natural ventilation - useful when the soffit conceals services, drainage, or structural elements above. The spacing also allows indirect light to penetrate, reducing the visual heaviness of deep soffits. conneQt works as a standalone soffit system or as part of a broader facade where interloQ or element13 clads the main walls.
element13 Solid Panels
For enclosed soffits where the design calls for a flat, continuous surface. element13 is a 3mm solid aluminium panel with a PVDF or powder coat finish. At 8.13 kg/m² it is heavier than a batten system but still manageable overhead. The solid aluminium handles impact better than thinner sheet materials - relevant for soffits at lower levels exposed to accidental contact.
interloQ Interlocking Panels
interloQ is primarily a wall cladding system, but the interlocking profile works on horizontal surfaces too. On a soffit, gravity assists panel engagement - the panels sit into the interlock rather than pulling away from it. The result is a ribbed, textured soffit with visual depth. interloQ soffits are particularly effective when the same product clads the adjacent walls, creating material continuity around corners and transitions.
What Design Considerations Apply to Soffits?
Soffit detailing differs from wall cladding in several important ways. Getting these right at the design stage avoids problems during installation and over the building’s life.
Access after installation. Soffits are typically difficult or expensive to reach once occupied. Choose systems and finishes that perform long-term without maintenance access.
Dead load on fixings. Unlike wall cladding where wind load is the primary design action, soffits impose a sustained dead load pulling directly away from the fixing plane. The fixing design must account for this permanent downward force in addition to wind uplift.
Ventilation. Soffits over enclosed spaces may need airflow. Spaced battens (conneQt) handle this naturally. Where solid panels are used, perforated panels or dedicated ventilation openings may be needed to prevent moisture build-up above.
Lighting and services. Recessed lighting is common in soffit applications. Plan penetrations and support framing before panel installation - retrofitting openings in a finished soffit is avoidable rework.
Drainage. Soffits on balconies and canopies may be exposed to water from above - balcony drainage, overflow, or deck membrane leaks. Design drainage paths and avoid trapping moisture against the underside of the structure.
What About NCC Compliance?
For Type A and Type B buildings, soffits that form part of the external wall assembly must be non-combustible. All Valmond & Gibson products - interloQ, element13, and conneQt - are non-combustible, tested by CSIRO to AS 1530.1. This keeps the compliance pathway straightforward for soffit applications on multi-storey buildings without requiring additional testing or performance solutions.
Colour and Finish
Soffits are typically specified in lighter tones than the main wall cladding. A lighter soffit reduces visual weight, brightens the underside area, and reflects ambient light back down to ground level. V&G’s colour range across all three products allows the soffit to match or deliberately contrast with the wall facade - the choice is a design decision, and both approaches are common in practice.
One Supplier for the Complete Envelope
The practical advantage of sourcing soffit cladding from the same supplier as the wall facade is coordination. Colour matching is guaranteed, lead times align, and technical support covers the full envelope rather than stopping at the wall-to-soffit transition. V&G regularly supplies soffit solutions alongside main wall cladding - conneQt battens under a canopy, element13 on the underside of a balcony, interloQ continuing from the wall around to the soffit - as a single package to the installer.
Last updated: 4 April 2026