Made in Australia to withstand our unique climate

Proudly Australian made and owned
Turn your under deck area into a practical, dry space you can enjoy in (pretty much) any weather
Underdeck is a pre-engineered ceiling system that transforms the underside of your deck into a functional, waterproof outdoor area. Proudly manufactured in Australia, our system is designed to endure the extremes of the Australian climate without compromising on style.
Learn more below, explore our Underdeck project gallery and testimonials, or get in touch to chat about booking your project!
How It Works
Underdeck’s clever system catches water that drips through deck gaps and channels it away via a gutter running along one edge. Our interlocking panels are specially designed to handle even heavy rainstorms without leaking.
Installation is simple – panels hang from specially designed brackets fixed to the bottom of your joists, creating a gentle slope towards the gutter. The result? A seamless, waterproof ceiling that looks stunning from below.
Key Features
- Waterproof: Keeps your under-deck areas dry, even during heavy rain
- Leak-resistant: The interlocking panel system channels water to the gutter and prevents leaks
- Quick installation: Suitable for both new and existing decks, with minimal disruption
- Custom fit: Tailored to suit your deck’s size, shape and finish – including curves and angles
- Multiple colour options: Available in a range of colours and finishes to match your home
- Low maintenance: No rust, peeling, painting or ongoing upkeep required
- Easy access: Panels can be removed to clean or retrieve items dropped from above
- Australian made: Built locally to endure harsh Australian weather conditions
- Space enhancing: Turns unused under-deck areas into functional and usable areas, year round
Colour Options
Underdeck is available in all Colorbond colours, with Surfmist (off-white) being our most popular choice. We also offer premium finishes including copper, aluminium, stainless steel, Corten and zinc to complement any architectural style.
FAQs
How long does installation take?
Most installations are completed within a day, depending on deck size and complexity.
Is installation difficult?
Underdeck is designed for straightforward installation. While many homeowners choose to DIY, we also have a network of skilled installers across Australia.
Can Underdeck be installed on an existing deck?
Absolutely! Underdeck works perfectly with both new builds and retrofitting to existing deck structures.
Does it work with unusual deck shapes?
Yes! Long gone are the days of purely rectangular decks. Underdeck can work with decks that have curves, angles, or odd shaped edges.
Is it completely waterproof?
Underdeck is engineered to handle heavy Australian rainfalls and is 99% waterproof.
How durable is the system?
Extremely durable. Underdeck is made from high-quality recycled metal designed to withstand Australia’s harshest weather conditions without rusting, rotting or corroding.
How do I maintain my Underdeck system?
The panels are low-maintenance but can be easily removed for occasional cleaning.
Is Underdeck just for homes?
No, Underdeck is the perfect solution for both residential and commercial applications. It can be used as a ceiling on all types of projects, inside and out.
Where can Underdeck be installed?
Anywhere you’d like to transform an area under a deck into a useable space! Some common areas we see are:
- Outdoor living spaces
- Outdoor entertainment areas
- Protected storage spaces
- Commercial outdoor areas