Priced per lineal metre. Choose a size and enter the metres you need; collect from our Watsonia yard or book our truck.
Treated pine in H3 for outdoor work above ground and H4 for posts and landscaping in the ground, in unprimed and pre-primed sizes. Delivered across Melbourne by our own trucks.
Price range: $5.90 through $33.00 per lineal metre
H3 and H4 are the two treated pine hazard classes most outdoor jobs come down to: H3 for timber above the ground, H4 for timber that goes into it. We stock unprimed sizes from 70×35 to 290×45, 90×90 and 115×115 posts, and a pre-primed range ready for top coats. It’s the timber for deck builders, fencers, landscapers and anyone putting up a pergola or carport.
Prices are per lineal metre. Choose the size, enter the total metres you need as the quantity, and add the lengths you want in the order notes. We’ll call to confirm before your timber is ready to collect from the Watsonia yard, or to book it on our truck for delivery across Melbourne.
The AS/NZS 1604 series sets hazard classes H1 to H6, each describing a higher level of biological threat. Outdoors, these are the ones that matter.
| Class | Exposure | Typical uses |
|---|---|---|
| H3 | Outside, above ground, periodically wet and allowed to dry | Decking, cladding, fascia |
| H4 | Outside, in ground or continuously damp, non-critical | Fence posts, pergola posts, landscaping |
| H5 (not this product) | In ground or fresh water, critical structural | Retaining walls, piles, stumps |
The WoodSolutions guide to preservative treatments and use classes is clear that H4 is not suitable for critical structural elements. For any structural element in ground contact, it calls for H5 or a Class 1 durable hardwood, so look at our retaining wall sleepers and steel sections for walls that hold back soil. Our article on using sleepers in your garden covers lighter landscaping.
| Range | Sections (mm) |
|---|---|
| Unprimed | 70×35, 70×45, 90×35, 90×45, 140×35, 140×45, 190×45, 240×45, 290×45 |
| Unprimed posts | 90×90, 115×115 |
| Pre-primed | 66×30, 66×42, 90×30, 90×42, 138×30, 138×42, 185×30, 185×42, 230×30, 230×42 |
| Pre-primed posts | 88×88, 112×112 |
Not every section comes in both hazard classes, so tell us where each piece is going and we’ll match H3 or H4 to the job.
Treatment only protects the timber it reaches. WoodSolutions advises resealing cut ends straight after cutting with preservative or primer, and re-coating drill holes and rebates on site. Check the end tag or face stamp too: it should show the species, preservative, hazard class, the standard (such as AS/NZS 1604.1) and the treatment plant.
Fixings matter as well. The WoodSolutions durability guide notes that some preservatives, such as CCA and ACQ, are corrosive to zinc-plated steel, so choose fasteners rated for treated timber from our screws range. CCA treated timber is also not allowed for handrails, decking or play equipment where people touch it often, so ask which preservative is in the stock if that applies to your job. Our view: any post that goes in the ground, even a letterbox post, deserves H4 at minimum.
Treated pine lengths and posts are delivered by our own trucks across Melbourne, or you can collect from our Watsonia yard; call us for a delivery price. We deliver six days a week, from a trailer load to a semi load, usually within 2 days. Request a quote through our quote request page or call (03) 9435 2555. For LOSP framing sizes, see our treated pine supplies.
No. H3 is for outside, above ground. Anything set in soil or concrete needs H4 at least.
WoodSolutions treats retaining walls as critical in-ground work needing H5 or a Class 1 durable hardwood. Talk to us about sleepers instead.
Pre-primed lengths come with a primer coat ready for top coats, and they are listed in their own sections, for example 90×42 rather than 90×45.
Read the end tag or stamp. It shows the hazard class, preservative and treatment plant.
