Treated Pine

Why Treated Pine Works So Well Outdoors

Not every job calls for hardwood. Treated pine gives you strength without the weight or the price tag, and it’s easy to cut, join, and build with. The timber is treated to H3 level using Light Organic Solvent Preservative (LOSP), a dry treatment that protects against fungal decay, rot and termites.

What makes LOSP special? It doesn’t load the timber with water like some other treatments. That means:

• No swelling
• No waiting for timber to dry
• Fewer twists and warps on-site

And if you’re painting or staining, the dry finish means the topcoat sticks better and looks sharper.

MGP10 Grading – What It Means On Site

All structural pine at Greenhill Timbers is machine-graded to MGP10, which stands for Machine Graded Pine with a minimum strength rating. For you, that means peace of mind. It's approved for structural framing, meets Australian standards, and works well for:

• Deck frames
• Pergola beams
• Roof trusses
• External walls
• Bearers and joists

No guesswork. No callbacks. Just timber that does what it says.

What Our Customers Use Treated Pine For

We supply treated pine for jobs across Australia every day. Here’s where you’ll most often see it go:

• Carports and outbuildings
• Verandahs and covered patios
• Landscaping frames and supports
• Outdoor stairs and raised garden beds
• General construction where above-ground durability matters

Got a plan in mind? Just bring in your measurements and we’ll help match up the right size and length.

Available Sizes – In Stock and Ready

We carry all the key structural profiles, including:

• 70 × 45 mm
• 90 × 45 mm
• 140 × 45 mm
• 190 × 45 mm
• 240 × 45 mm

Each piece is dressed, straight, and stored under cover. You’ll find our timber stacks neat and well labelled because that’s how it should be.

Why Get Treated Structural Pine from Greenhill Timbers?

We’re not just another timber yard. Here’s why our customers keep coming back:

• Reliable stock – We keep common sizes on hand so you’re not left waiting
• Quality control – Every length is checked for straightness and finish
• Trade-friendly service – Quick turnaround, forklift loading, and bulk rates
• DIY support – Friendly advice if you're not sure what to use or how much
• Custom orders welcome – We’ll help you plan out your cut list and supply what you need

From big framing jobs to backyard builds, we’ve got the timber and the team to back you.

Tips for Handling & Finishing

Treated pine is easy to work with, but a few good habits go a long way:

• Store it off the ground and out of the rain before use
• If you’re cutting it, seal the ends to preserve the treatment
• Paint or stain it with a quality finish — follow the paint brand’s guidelines
• Allow some curing time if freshly treated, especially in humid conditions

Proper installation and finishing can make a big difference in how long your timber lasts, especially in harsh weather.

Order Your Treated Pine Timber Today

Whether you're building from the ground up or just adding the finishing touches, Greenhill Timbers is your local supplier for strong, clean, reliable treated pine and essential products like Concrete Stumps to support your projects.

Drop by the yard, give us a call, or request a quote online. We’ll make sure you get what you need, delivered or ready for pick-up.