H3 Treated Pine Decking

90×22 (Length: 2.4-6M)


100% Australian owned and operated
Highly competitive prices
Fast Shipping Victoria wide

Frequently Asked Questions

  • Does treated pine decking need to be sealed?

    Yes, you must always ensure to seal off the decking after it has been properly installed.

  • Should you paint treated pine?

    Treated pines can be stained or painted. But you must check the moisture content of the wood and apply the paint accordingly.

  • How long will treated pine last outdoors?

    Treated pines are great for outdoor purposes and can serve for up to 30 years with minimal maintenance.

  • How long will pressure treated deck last?

    Pressure-treated decks can last for up to 50 years.

  • Why is pine good for decking?

    Pine is one of the easiest woods to craft. It can be cut easily and fastens conveniently as well. So it is very easy to make deckings out of pine.


Are you planning for decking? Then you will be glad to know that our treated timbers are great for decking. These are a cheap yet plentiful choice for decking.

Decks made out of wood are prone to constant damage from natural elements. Weather, termites and wood degrading fungi are also sworn enemies of wooden products. Even so, if the structures are used on exterior projects like decks.

To address all these issues, you can use treated timber pine. Treating them with chemical pesticides like CCA, ACQ and LOSP, we minimise the risk of termite and fungi infestation.

Our H3 and H4 treatments include painting the wood with insecticides and pesticides. The kind of pesticide we use depends on the purpose of the wood. But for deckings, we mostly use LOSP and CCA. But we also provide ACQ treatment if the client demands it.

The preservatives we use include:

  • CCA: CCA is a preservative based on water. It is high in copper, chromium, and arsenic. This chemical is a high-quality preservative that has been used for over 80 years to prevent insect and fungal infestations. CCA-treated pine bunnings are ideal for outdoor usage, especially deckings. Above-ground applications are possible with our H3 CCA wood pine.
  • ACQ: ACQ-treated pines are pretty standard nowadays. Made from Alkaline Copper and Quaternary, it is used as an alternative to CCA. It is a safer alternative for CCA. Similar to CCA, it also prevents rots and termite and fungal action.
  • LOSP: LOSP is a chemical preservative mixture that prevents termite and fungus degradation. The essential advantage of using LOSP is that it does not cause wood warping or shrinkage. As a result, it preserves the quality and size of the wood during and after construction.

Get high-quality treated timber for your deck.

Melbourne timber suppliers offer a wide range of pine timbers that have been carefully handled and treated. Our best-selling treated pine products are F5 H3 CCA treated pines, H4 treated pines, structural f7/MGP10 H3 CCA/LOSP treated pine, decking, and stair treads. When properly maintained, our treated timber pine provides long-term service. Our cost-effective method and timely delivery guarantee 100% customer pleasure. Purchasing our treated pine stair treads will give you the most value for your buck.

why use Treated Pine for Decking?

Treated Pine is the first choice decking material. If you want to affordably build retaining walls and house framing, go for treated Pine. Before buying decking materials, understand the good and bad of all the choices available. 

Treated pine timber is affordable and abundant in the market. The finished product won’t look as aesthetic as the expensive timbers, but it carries an advantage over composite decking choices and hardwood. 

Pine is resilient, fast-growing, and affordable. It must be treated after milling. As it is softwood, it is not durable in its raw form and is prone to rotting and termite attacks. For decking uses, Pine is chemically treated. These treatment chemicals are not safe for humans, but technology today to treat Pine is safer than the old ways. 

treated pine decking melbourne
treated pine decking supplier melbourne
  • Types of Treatment For Pine Decking 

    The green colour of treated Pine is a result of the treatment process. It is safer to know how the Pine was treated before buying. 


    1. Alkaline Copper and Quaternary: It is a modern and safe method to treat Pine. Its resistance to termites is not as strong as the old method. 
    2. Copper Chrome Arsenic: Although this treatment is legal in Australia, it is not safe for human contact. One of the ingredients, Arsenic, is a poison. Avoid hand to mouth contact after touching CCA treated Pine. It is the old method of treatment. 
    3. Light Organic Solvent Preservative: This method delivers the robustness of copper chrome arsenic (CCA) treatment but without the Arsenic. 

    Note: Always wear face masks when treating Pine, even when employing a safer method. 


    The durability of Treated Pine Decking:


    Sustainability of Treated Pine:

    • Pine grows fast. Almost all the Pine is grown in tree plantations rather than natural forests. 
    • Luckily, Pine has a lifespan as long as hardwoods because of treatment. In terms of replacement, a cut pine tree will regrow when the timber products made from the same tree need changing. 

    The Cons of Treated Pine Decking:

    Treated Pine is the most affordable option, not the best one. There are several disadvantages of treated Pine – 


    H3 treated Pine timber is used in above-ground uses like decking boards. 

    • Low Durability – Even after treatment, it is softwood. It is vulnerable to damage by scratches and dents. Hardwood is not. 
    • Not a fireproof timber – Avoid using treated Pine in bushfire prone areas. Always use timbers like Blackbutt, Spotted Gum, and Merbau. They are fire-resistant. 
    • Attractiveness – Although not as naturally coloured as hardwoods, it is available in various stain colours. 
    • Shrinkage – If not properly sealed, the timber will shrink or expand. 
    • Lifespan – It has a lifespan of 15-20 years. Treated Pine is a grade 2 timber. Grade 1 hardwoods last 25-40 years. Ironbark and tallowwood are grade 1. 
  • Fortunately, Pine is one of the most sustainable timbers on Earth, but how?


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Delivery across Australia

We offer Delivery across Australia. Every order is delivered within 24 hours from order confirmation in Melbourne. Partnering with logistics companies, we also supply products outside Melbourne.

100% pure wood

Our wood is procured from sustainable plantations and forests in Australia. Every product we offer is 100% wooden, milled from high-grade and quality timber.


We provide complete support in purchasing and delivering wood and wood products. You can place your order through simple text. Free advice is offered by some of Australia’s best timber experts. Our team is ready to assist you.

Melbourne Timber Supplies

High-quality wooden products

At Melbourne Timber Supplies, we value the quality of a product more; hence, we use the highest-grade wood for manufacturing every product. The procurement process follows every guideline and Australian standards. Following every Australian standard and procedure, every wood we procure comes from sustainable plantations and forests. To maintain consistency in quality, every lumber is milled with high precision and expertise.

From treated pine to non-treated pine to different types of hardwood, we offer a plethora of options.

About us

With over three years of experience, Melbourne Timber has been the leading supplier and manufacturer of wood and wooden products in Melbourne. Providing orders in and around Melbourne, we aim to offer our clients the best quality wood products at the most affordable rate. We appreciate the vintage elegance of the wood. We provide wooden boards and frameworks at a very reasonable price to make wooden constructions more popular in Australia. Striving to become the premier timber supplier in Australia, we ensure to maintain the quality of every product and service we offer.

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Australia's most trusted Timber Company with 5 star reviews!

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