H3 Treated Pine | Treated Pine & Decking

Category Treated Pine & Decking

Type Treated Timber

Variants 17 available

Availability In Stock

Delivery Australia-wide

Variants

17 of 17

42x19 Organix OPG H3 Request
70x19 Organix OPG H3 Request
90x19 Organix OPG H3 Request
140x19 Organix OPG H3 Request
42x35 Organix OPG H3 Request
70x35 Organix M10 Appearance DAR H3 Request
90x35 Organix M10 Appearance DAR H3 Request
120x35 Organix M10 Appearance DAR H3 Request
140x35 Organix M10 Appearance DAR H3 Request
190x35 Organix M10 Appearance DAR H3 Request
70x45 Organix M10 Appearance DAR H3 Request
90x45 Organix M10 Appearance DAR H3 Request
120x45 Organix M10 Appearance DAR H3 Request
140x45 Organix M10 Appearance DAR H3 Request
190x45 Organix M10 Appearance DAR H3 Request
240x45 Organix M10 Appearance DAR H3 Request
290x45 LOSP MGP10 Appearance DAR H3 Request

Frequently asked questions

What is H3 treated pine and where can it be used?

H3 is the hazard class assigned to timber treated for above-ground exterior use. It protects radiata pine against moderate decay, borers and termite attack where the timber is fully exposed to the weather but not in direct ground contact. Birak's H3 range covers fascia, trim, exterior framing, pergola components and posts off the ground. For in-ground or buried applications you must specify H4 instead — H3 is not approved for ground contact.

What is the difference between Organix and LOSP H3 treatment?

Organix is a water-based, low-odour treatment system that delivers H3 protection with minimal handling restrictions, suitable for both rough-sawn and Appearance DAR profiles. LOSP (Light Organic Solvent Preservative) is a solvent-borne treatment that leaves the timber dry, dimensionally stable and ready for paint or stain immediately. Birak stocks both — Organix for general framing and posts, LOSP Appearance DAR for fascia and visible architectural pine where finish quality matters.

What sizes of H3 treated pine does Birak supply?

Birak's H3 range covers a wide span of profiles. Thin DAR sections start at 42x19 and step through 70x19, 90x19 and 140x19 for trim and fascia work. Structural-style Appearance DAR sizes run from 70x35 up to 240x45, plus 290x45 LOSP MGP10. The 35mm and 45mm thicknesses suit pergola rafters, exposed beams and decorative posts. Lengths and pack quantities can be confirmed against current stock when you raise a quote.

Does H3 treated pine purchased through Birak count toward IPP targets?

Yes. Birak is Supply Nation Registered, so every dollar spent on H3 treated pine through Birak counts toward your organisation's 4% Indigenous Procurement Policy target. Audit-ready procurement paperwork is included automatically with every order, so quantity surveyors and procurement officers can substantiate Indigenous spend without chasing supplier statements after the fact.

Can Birak deliver H3 treated pine Australia-wide?

Yes. Most H3 stockists operate inside one state or metro region. Birak ships the full H3 range — Organix, LOSP and Appearance DAR — to every Australian state and territory. Typical lead times are 5–10 business days for standard orders, with bulk and project deliveries scheduled to suit construction programs. A single purchase order can combine H3 framing, decking and cladding for cleaner site logistics.