Structural F5 H3 CCA Treated Pine

70×35 (Length: 2.4-6.0M)

70×45 (Length: 2.4-6.0M)

90×35 (Length: 2.4-6.0M)

90×45 (Length: 2.4-6.0M)

140×35 (Length: 2.4-6.0M)

140×45 (Length: 2.4-6.0M)

190×35 (Length: 2.4-6.0M)

190×45 (Length: 2.4-6.0M)

240×45 (Length: 2.4-6.0M)

290×45 (Length: 2.4-6.0M)


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

Frequently Asked Questions

  • How does a structural F5 Treated Pine compare to other materials?

    The main difference between F5 structural pines and other kinds of timber is in their structural strength. As the name suggests F5 structural pines offer maximum strength and support and thus are most preferable for frameworks and supports.

  • Does f5-treated pine have a lower span than f7?  

    The F5 and F7 grade treated pines are based on the stress-bearing capability of the wood. Their longevity depends on the type on the type of treatment they are administered.

  • What is the durability of f5-treated pine?

    F5-treated pines are highly resistant to rot and decay and can serve you for over 30 years.

  • Can F5 timber be used outside?

    Our F5 timbers are treated to make them rot and water-resistant so they can be used for outside purposes.

  • Is F5 the same as MGP10?

    Yes, F5 and MGP10 grading can be used synonymously. Timber labelled with F5 or MGP10 are highly-versatile and can be used for any kind of construction purpose.


Regular structural pine timbers are prone to damage and decay by insects, fungus and weather. Our treated pine F5 is painted with chemical preservatives. Applying these preservatives makes the wood resistant to decay by deteriorating factors.

So what is F5 Treated Pine? The type of treatment applied to the timber depends on the climatic conditions. Our F5 range of treated Pine is treated with the H3 procedure. This process has been designed to preserve the wood quality. For this treatment, insecticides and fungicides are used.

The H in H3 stands for hazard. This letter is symbolic of the approach used to protect the wood from activities of wood-decaying organisms like termites. Another important aspect of the process is the number in H3.

The number in H3 denotes the level of treatment applied to the wood. This level is also a determinant of the timber’s durability. Based on the durability, the timber’s purpose can best be assigned.

H3 and H4 levels of treatment are the most durable. Hence, they are best suited for external use. Our H3 treated Pine is best for work above ground, like making frames and subframes.

For this process, we use CCA. It is a waterborne preservative that protects the timber from insect and fungal attacks.

The H3 treatment that we use in our F5 range of treated timber is the minimum level required to prevent termite and fungi infestation. Treated explicitly for external use, our F5 wood is specially meant for areas exposed to periodic wetting.

Our H3 treatment also uses ACQ and LOSP preservatives.

  • Nowadays, ACQ-treated pines are relatively common. It is used as an alternative to CCA and is made of Alkaline Copper and Quaternary. It is a more secure alternative for CCA. It, like CCA, protects rots, termites, and fungal action.
  • It is an organic preservative mixture used to keep termites and fungi at bay. The main benefit of utilising LOSP is that it does not induce warping or shrinking in wood. As a result, the wood’s quality and size are retained both during and after construction.

Although our F5 H3 CCA-treated Pine slows down the decay process and enhances the longevity of the wood, proper care and maintenance are still a necessity to ensure the best service.

We offer high-quality treated Pine in Melbourne

Melbourne timber suppliers offer a wide range of pine timbers with quality treatment. Our products include F5 H3 CCA treated pines, H4 treated pines, structural f7/MGP10 H3 CCA/LOSP treated pine, decking and stair treads. Treated with suitable preservatives, our F5 timber guarantees long-term service. With a budget-friendly approach and quick delivery, we ensure 100% customer satisfaction. Purchasing our F5 treated Pine will give you the best value for your money.


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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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