What does Gully look like?
BlueScope draws it from river clay, pebbles and stone, and calls it grounded and subtle. In sun it shows a gentle brown-grey warmth. BlueScope says it complements softer or limewashed brick, natural stone and rendered walls.
Its palettes put Gully trims on a Paperbark roof, place it between Ironstone and Surfmist, or pair it with Dune and carry Bluegum through the inside. The warmth shows most in late afternoon sun, so that's a good time to hold a sample sheet up against your walls.
Why 0.64 matters if you're building
Under the NCC 2022 Housing Provisions, a home in climate zones 1 to 5 can use the elemental deemed-to-satisfy pathway, a checklist approach, if its roof's solar absorptance is 0.64 or less. Darker roofs have to go through a 7 star NatHERS rating instead. Gully lands right on the line, so it's in.
In zones 6 to 8, any roof colour is fine under either pathway. The classes come from the same figure: NSW BASIX calls Gully medium, while the older NCC 2019 bands called anything above 0.60 dark. Your builder or energy assessor will know which applies to your job.
Gully or Wallaby?
| Gully | Wallaby | |
|---|---|---|
| Tone | Warm, earthy, leans brown | Muted grey with a soft brown undertone |
| Solar absorptance | 0.64 | 0.64 |
| Made in Ultra | Not listed | Yes |
| BlueScope's suggested partners | Limewashed brick, stone, render | Brown timber, red-brown brick, concrete, black steel |
What we'd weigh up
If your walls are cream, sandstone or pale render and you want a roof with some warmth, Gully is a strong pick that won't push a new build onto a harder rating path. Within 200 m of breaking surf, we'd look at Wallaby in Ultra instead, since Gully isn't on the Ultra list. A note on who we are: an independent service, not affiliated with BlueScope, the Colorbond trademark owner.
Want a roofer to take a look?
Tell us the job and your postcode. We match it with a Find My Roofer certified roofer who specialises in that kind of work, and they call you to quote. Your number goes to them alone.