Often, the biggest barrier to starting a project is knowing where to begin with your materials. Sustainable timber suppliers or timber wholesalers in Melbourne? Hardwood or softwood? Treated or untreated? 

Our expert guide can help simplify the selection process and equip you with the knowledge to bring your vision to life. 

The Timber Trifecta 

Most timber manufacturers in Melbourne offer a range of softwoods, hardwoods and engineered timber. The difference between these is: 

Softwood: Includes conifers like Pine or Cedar, often used for framing and landscaping. Our Japanese Cedar is an excellent example of a premium softwood, prized for its natural beauty, stability and suitability for cladding applications in Australian conditions.

Hardwood: Sourced from species like Broadleaf trees such as Merbau or Jarrah, valued for strength and a rich visual appeal. Australian hardwoods like Spotted Gum and Blackbutt are popular choices for timber flooring and decking due to their exceptional durability.

Engineered timber: Include products like plywood or laminated beams, created by binding layers or particles of timber. You can visit any timber wholesalers in Melbourne or engineered timber suppliers to learn more about these woods.

Timber Treatments Decoded

Whether you source from timber hardwood suppliers or opt for engineered timber in Melbourne,  the hazard level grading system will still apply! This system is designed to categorise the different chemical treatments and the timber’s level of resistance to pests, decay and fungal growth. The hazard level is rated on a scale from H1, the lowest level, to  the highest level, H6.

That’s why it’s essential to have a clear vision for both the aesthetics and function of your project. Factors to consider include whether it’s located indoors or outdoors, and your design’s main function. How durable does it need to be? Is it in an area with high foot traffic, or is it a low-use design detail?

Once you’ve determined your project’s needs and the correct timber species for your design, you’re ready to venture into the wonderful world of the hazard level grading system.

Use the guide below for a detailed breakdown of what each level means:

H1 – Treated to resist insects and termites. Use it indoors for framing, flooring, and furniture, ensuring it’s dry and off the ground.

H2  – Offers similar insect and termite resistance to H1, but it’s more resilient. It can be used in dry, off-ground conditions for timber flooring, framing, and other interior applications. It doesn’t require ventilation but can’t handle moisture. 

H2F – Also designed to minimise the risk of an attack by insects and termites, H2F must be protected from wetting, and is commonly used for framing and in dry situations.

H2S – Similar to H2F and other previous levels, H2S protects timber against insects and termites, but it also allows for moderate wetting. 

H3 – The next level of treatment, H3 is suitable for use in applications where the wood is kept off the ground and exposed to weather conditions and moderate wetting. This treatment is often used for weatherboards, fascia, above-ground pergola posts, window joinery, framing and timber decking.

H3A – This level of treatment is for timbers that are predominantly in vertically exposed situations with a painted coat that’s maintained regularly. The most common uses for H3A are for fascia, bargeboards, exterior cladding, window joinery, door joinery and non-laminated verandah posts.

H4 – This is the first level of treatment that is suitable for use in applications where the timber is in contact with the ground or is continually damp. H4 is designed to minimise the likelihood of pests including termites, and prevent radical decay. Typical uses for H4  include fence posts, greenhouses, in-ground pergola posts, and landscaping timbers.

H5 – This level provides strong protection against insects and extreme decay, so it’s suitable for ground or freshwater contact. Think retaining walls, house stumps, building poles and other similar applications.

H6 – Offers the highest level of protection, specifically designed for prolonged contact with saltwater. It effectively guards against marine borers and extreme decay, making it perfect for boat hulls, marine piles, and jetty cross-bracing.

Sustainable Timbers

When choosing the right timber for your project, it can be beneficial to venture beyond timber manufacturers in Melbourne and engineered timber suppliers. Recycled timber options and sustainably sourced woods are becoming a popular choice, due to their quality and unique characteristics.

Fun fact, sustainably harvested timber is often of a higher quality, because the trees are cut at the perfect growth stage, producing sturdier boards that are less prone to defects!

If this is something you’re interested in, sustainable timber suppliers can be a great place to start your search. To learn more about certifications like FSC or PEFC, which confirm if the timber you’re purchasing comes from responsibly managed forests, check out our guide to timber sustainability. For a premium FSC-certified timber option, explore our Imbue range – crafted from FSC® Certified New Zealand Radiata Pine using advanced modification technology.

With your understanding of timber types and treatments, you’re ready to bring your project to life.

Need extra guidance? Get in touch today!