If you have ever tried to find a planter box that fits a specific balcony ledge, a recessed ground-level installation, or a tight courtyard space, you already know the problem. Off-the-shelf sizes are built for average situations. Apartments and balconies rarely are.
Alumac fabricates custom aluminium planter boxes to exact specifications, powder-coated and built to withstand Sydney’s coastal and urban conditions without rotting, rusting, or requiring ongoing maintenance.
Why Aluminium for Balcony and Window Planters?
Timber is the instinctive choice for planters, but in an apartment context it rarely makes long-term sense. Constant moisture exposure, UV, and the lack of adequate drainage cause timber to warp, split, and degrade within a few years, especially in a strata setting where maintenance access is limited.
Steel is durable but heavy, and prone to surface rust when the coating is scratched.
Aluminium sits in a different category. It is:
- Lightweight enough to comply with balcony load limits without structural engineering assessment
- Corrosion-resistant, including in coastal and marine environments
- Powder-coated to any Dulux or custom colour to suit building aesthetics or body corporate requirements
- Fabricated to exact dimensions, including non-standard widths, depths, and heights
- Low maintenance over its entire service life
Applications: Where Custom Sizes Matter Most
Standard planter box dimensions are designed for standard situations. The following are some of the contexts where custom fabrication is the practical solution:
- Balcony balustrade ledges with precise width and depth constraints
- Recessed plinth planters built into rendered or cladded facades
- Rooftop garden installations where drainage integration and load weight are critical
- Strata-titled buildings where consistent appearance across all units is required
- Installed as a privacy screen or area divider
- Built in mailbox or along fenceline.
Drainage and Practical Considerations
Alumac can incorporate drainage, footings and mounting brackets as part of the fabrication. If you’re installing planters on a strata balcony, it is worth confirming drainage requirements with your body corporate before ordering, as some buildings require closed-bottom planters with drainage to a specified point.
We can accommodate closed-bottom, open-drain, and liner-insert configurations depending on your installation.
Project Gallery
Recent planter box projects manufactured for two prestige Sydney properties:
Sydney-Made, Built to Specification
Alumac has been fabricating custom aluminium products in Sydney since 1970. All planter boxes are made at our Taren Point facility. Minimum lead times apply depending on order volume and complexity.
To discuss your project or request a quote, contact us at (02) 9525 2177 or visit alumac.com.au/contact.
Greg Wallis, Manager, Alumac Industries and Strip Drains Sydney. Greg is a skilled business management and product design professional with years of hands-on experience. Greg has designed myriad innovative metal building products that blend quality, craftsmanship and architectural products for the building and construction industry.
