What is H3 1 treated timber?
H3. 1 boric-treated cavity battens and external finishing timbers are required by B2/AS1 to be primed before dispatch and to have a specified type of paint coating. B2/AS1 does not allow the use of LOSP-treated timber for framing.
Can I use H3 timber inside?
Unlike other “low odour” H3 treated products, T3 Green Plus has no VOC emissions, making it safe for use indoors and out.
What is H3 treatment?
*H3 The minimum level of preservative treatment required to protect the timber from attack by decay fungi and insects, including termites. H3 preservative treatment offers protection in situations above-ground, exposed to the weather or periodic wetting.
Is H3 treated pine safe?
Porta’s H3 Treated Pine is impregnated with copper fixed ACQ (Alkaline Copper Quaternary) waterborne preservatives which increases the timber’s service life and durability for 30+ years. It is a safe, user friendly, preservative that complies with Australian Standard AS1604.
How long will H3 last in the ground?
Treated pine decking can last for over 30 years when properly treated – this means the hazard level of at least H3, ideally H4. The lifespan of the treated pine depends whether it is touching the ground, how thick the poles or planks are and the hazard level of its treatment.
What is the difference between H3 1 and H3 2?
1 was developed as a dedicated ‘cladding treatment’ class, and H3. 2 continued for external structural timber not in ground contact. The discontinuance of H3. 1 as a framing treatment allows it to revert to its original purpose as a cladding treatment class.
Do termites eat H3 treated pine?
Termites won’t eat Treated Timber… Yes, you are better off using treated timber but it does not mean you are not at risk of termite attack & decay. Here is a retaining wall which has suffered termite damage, decay & movement.
What is the difference between H3 and H4 treated pine?
The ‘H’ denotes the level of treatment and what the treated timber can be used for: H2 protects against termites and is for inside use only. H3 protects against termites and wood rot, and is for outside, above ground only. H4 is for outside, non-structural, in contact with ground, such as posts and garden edges.
Do you need to paint H3 treated pine?
Unfortunately a perception has developed that treated timber does not need painting. While the preservative treatment will protect against decay and insect attack for decades, the timber is still prone to the effects of general weathering such as splitting, warping, fading and surface discoloration.
How long does H3 treated pine last underground?
How do you know if wood is dry enough to paint?
Wood is dry enough for painting if it can absorb water. Simply sprinkle some water on the surface of the wood. If the water is being absorbed right away then the wood is ready to be painted. But if the water beads up then the wood is too wet to be painted.
When to use H1.1 or H2.2 timber?
H1.1 Timber used in situations protected from the weather, dry in service and where resistance to borer only is required. H1.2 Timber used in situations protected from the weather but where there is a risk of moisture exposure conducive to decay.
When did H3.1 become an acceptable treatment class?
H3.1 treatment class is no longer an Acceptable Solution for solid timber framing. In 2003, the review of NZS 3640 (Chemical preservation of Round and Sawn Timber) split H3 into H3.1 and H3.2. H3.1 was developed as a dedicated ‘cladding treatment’ class, and H3.2 continued for external structural timber not in ground contact.
What is the treatment level for low hazard timber?
The treatment level for low hazard situations where timber is not exposed to the weather. Its major use is for framing timber and interior linings. This is split into two categories. H1.1 Timber used in situations protected from the weather, dry in service and where resistance to borer only is required. H1.2
What does the H stand for in treated timber?
When you buy timber for building, if it is treated timber you’ll see it is labelled with a code starting with an ‘H’ (such as H1.2, H3.1, H3.2 or H4). These show what uses the timber is suitable for, for example, internal framing timber or below-ground uses such as piles, and give an indication of the type and extent of chemical treatment.