H4 – This is the first level of treatment that is suitable for use in applications where the timber is in contact with ground or is continually damp. H4 is
designed to minimise the likelihood of attack by insects
, including termites, and radical decay where a critically important end use is involved.
Is H4 treated pine safe?
When purchasing timber, ensure that the type of wood you select hasn’t been treated with toxic chemicals and is the right grade of treated pine for in-ground use. You will need to buy
timber rated at least H4
, but H5 and H6 provide more protection (H6 is rated for below-ground use and is recommended).
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.
What is H4 treated pine treated with?
H4 treated pine is a timber which has
a preservative treatment applied to protect it from fungal decay, borers and termite attack
. A robust choice when exposed to the elements, it is suitable for in-ground applications throughout Australia.
How long does H4 treated pine last?
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.
Does painting treated pine make it safer?
Painting of the treated pine will also assist with reducing any potential for dislodgeable arsenic, further protecting you from any potential hazard. … Whether through ingestion, contact through the skin or leaching into soil, treated pine
has been regularly proven to be safe for human use
.
Does Bunnings treated pine have arsenic?
Re: Treated Pine Fence Pailings and Arsenic
Health hazards
may result from exposure to copper chromium arsenic (CCA) treated timber
. For information and tips, click on the links contained on the Health and Safety section of the Bunnings website.
Will termites eat 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.
Is H4 treated pine termite proof?
*H4 The minimum level of
preservative treatment
required to protect the timber from attack by insects, including termites, and severe decay. H4 treatments are suitable for use in situations where the timber is in contact with the ground or is continually damp.
How long will H3 treated pine last?
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
.
What chemicals are in treated pine?
Copper and arsenic
in the preservative protect the wood from insect and fungal attack. Chromium (chrome) ‘locks’ the copper and arsenic into the timber and reduces the risk of the chemicals leaching out. The CCA process gives the treated wood a green tint.
How is H4 timber treated?
| Treatment Exposure Hazards | H3 Outdoor, above ground, periodic wetting Decay, borers and termites | H4 Outdoor, in-ground, some wetting Severe decay, borers and termites | H5 Outdoor, in-ground, extreme wetting Extreme decay, borers and termites | H6 Prolonged exposure to marine water Marine wood borers and decay |
|---|
What type of pine is most treated timber?
Most treated timber in Australia is
softwood, usually plantation pine
. Softwood grows more quickly and is cheaper to produce than hardwood but is not naturally resistant to pests. Treating softwood makes it more durable and versatile.
Is hardwood better than treated Pine?
When compared to hardwood,
treated pine lasts longer
, but only if both are exposed to the soil. … In fact, treated pine posts are said to last for 15 to 25 years, while hardwood posts last for 20 to 30 years. All of this means that if short term costs are your limiting factor, then treated pine is your best bet.
What lasts longer treated Pine or hardwood?
Some Hardwood is treated which can improve the durability. Hardwood has less Sapwood so when it comes to poles,
Pine generally still lasts longer when treated
, except for Class 1 Hardwood which is similar to Pine.
Is Treated Pine strong?
Structural Pine timber is
not naturally durable
and in service can be subject to attack from natural enemies such as fungi, insects, and weathering. Where additional protection is required, you can increase timber’s durability with preservative chemicals, this product is commonly known as Treated Pine Timber.
