Spotted Gum
Premium Decking and Structural Hardwood, BAL-29 Rated
Spotted gum is one of Australia’s premium structural and decking hardwoods, prized for its strength, hard-wearing surface, and striking grain that runs from pale to rich chocolate-brown. It is a favourite for decks and alfresco areas that have to take weather and foot traffic, and it doubles as a structural timber for posts and beams. We stock it across decking boards, F27 solid sections, GL18 and GL20 laminated posts and beams, and solid and laminated posts.
Why Build with Spotted Gum
Spotted gum is exceptionally hard and dense, so it stands up to heavy foot traffic and the Australian climate without wearing or moving the way softer timbers do, which is exactly why it is chosen for high-use decks and commercial outdoor areas. It is also bushfire-rated to BAL-29, making it suitable for decks and alfresco areas in designated bushfire-prone zones, a genuine advantage on Sydney-fringe blocks where the deck has to meet fire requirements.
Match the product to the job: decking boards for the deck surface, F27 solid sections for structural framing, and GL18/GL20 laminated posts and beams for load-bearing outdoor structures where you need longer, larger, more stable members. Australian-grown and sustainably sourced.
What Goes With It
Like all dense hardwoods, spotted gum needs the right fixings and finish. Use stainless steel decking screws and fasteners to avoid corrosion and staining, and oil the deck to protect the surface and bring out the grain. Comparing decking hardwoods? See blackbutt and merbau, or the full hardwood range.
Serving Sydney Tradies and Renovators
- Trade pricing and bulk quantities: Competitive rates on volume orders. Call 1300 554 775 for trade and project pricing.
- Delivered to site across Sydney: Sydney, the Blue Mountains, Wollongong, and the Central Coast.
- BAL-29 rated: Bushfire-rated Australian hardwood in decking, structural, and laminated sections.
- Australian-owned family business: Western Sydney based. Real people, real stock, real advice.
Whatever the deck calls for, we’ve got the spotted gum.
Call 1300 554 775 or request a quote online and our team will help match decking, posts, and beams to your job.
Frequently Asked Questions
Is spotted gum good for decking?
Yes. It is one of the hardest, most durable Australian decking hardwoods, handling heavy foot traffic and weather, with a BAL-29 bushfire rating suitable for bushfire-prone areas.
Is spotted gum bushfire rated?
Yes. Spotted gum is rated to BAL-29, making it suitable for decks and alfresco areas in designated bushfire-prone zones. Confirm the rating for your specific application.
How hard is spotted gum?
Spotted gum is one of the harder Australian hardwoods, with a high Janka hardness that resists denting and wear, which is why it suits high-traffic decks and floors.
Does spotted gum need oiling?
Yes. Oiling protects the surface, manages movement, and brings out the grain. Use stainless steel fixings to avoid staining the boards.
What is the difference between F27 solid and GL laminated spotted gum?
F27 solid is a single graded piece. GL18/GL20 laminated is glue-laminated for stability and available in longer, larger sections, used for posts and beams carrying load.