Treated Timber & Landscaping | Harper Timber | Timber Specialists since 1854

"Timber that lasts"

Harper Timber carry a massive range of treated timber products to protect against Termite attack & Decay. On site is a range of structural, landscape & fencing grade Treated Pine. Harper Timber can supply treated hardwood in a number of hazard levels.

Treated Timber & Landscaping Products ex stock include:

Profile	Diameter	Lengths
Premium Poles	100	1.8, 2.4, 3.0, 3.6
	112	1.8, 2.4, 3.0, 3.6
	120	1.8, 2.4, 3.0, 3.6
	138	1.8, 2.4, 3.0, 3.6
	150	1.8, 2.4, 3.0, 3.6, 4.8, 5.4, 6.0
	180	1.8, 2.4, 3.0, 3.6, 4.8, 5.4, 6.0
	200	1.8, 2.4, 3.0, 3.6, 4.8, 5.4, 6.0
Premium Halves	100	1.8, 2.4, 3.0, 3.6
	112	1.8, 2.4, 3.0, 3.6
	125	1.8, 2.4, 3.0, 3.6
	150	1.8, 2.4, 3.0, 3.6
Premium Slab	100	1.8, 2.4, 3.0, 3.6
Premium Slab	125	1.8, 2.4, 3.0, 3.6
Premium Winged Split	100	1.8, 2.4, 3.0, 3.6
Premium Winged Split	125	1.8, 2.4, 3.0, 3.6

Premium Large Diameter Logs

Length	Diameter (mm)
1.8m	225	250	300
2.4m	225	250	300
3.0m	225	250	300
3.6m	225	250	300
4.8m	225	250	300
5.4m	225	250	300
6.0m	225	250	300

Premium Fencing Products

Product	End Section (mm)	Treatment	Lengths
Posts	100 x 100	H4	1.8, 2.4, 3.0, 3.6
Palings	100 x 15	h5	1.5, 1.8, 2.1, 2.4
Palings	150 x 15	h5	1.5, 1.8
Fence Rails	75 x 50	h5	4.8, 5.4

Premium Sleepers

Size (mm)	Length
125 x 50	1.8, 2.4, 3.0, 3.6
125 x 75	1.8, 2.4, 3.0, 3.6
150 x 50	1.8, 2.4, 3.0, 3.6
150 x 75	1.8, 2.4, 3.0, 3.6
150 x 100	1.8, 2.4, 3.0, 3.6
200 x 50	1.8, 2.4, 3.0, 3.6
200 x 75	1.8, 2.4, 3.0, 3.6
200 x 100	1.8, 2.4, 3.0, 3.6

Premium Domed Bollards

Diameter (mm)	Length
100	1.5, 1.8
150	1.5, 1.8

Hardwood Sleepers

End Section	Length	Can be supplied treated to order
200 x 100	2.4	Yes

Hardwood Fencing Products

Product	End Section	Lengths	Can be supplied treated to order
Posts	125 x 50	1.8, 2.1, 2.4	Yes
Posts	150 x 50	1.8, 2.1, 2.4	Yes
Rails	75 x 50	4.8, 5.4	Yes
Palings	100 x 16	1.5, 1.8	Yes

Hardwood Pegs

Diameter (mm)	Length (mm)
50 x 50	0.225
50 x 50	0.300
50 x 50	0.450
50 x 50	0.600
50 x 50	0.750
50 x 50	0.900

Information on the Type of Treatments Available

The treatments used to protect pine vary depending on where and how the timber will be used. The most common outdoor treatments are Copper Chrome Arsenate (CCA), Alkaline Copper Quaternary (ACQ) and Light Organic Solvent Preservative (LOSP). A different strength LOSP is also used for internal applications (house framing) along with H2F treatments such as bifenthrin.

Treatments available:
Abbreviation	Name	Warranty	Hazard Level	Code
CCA (external)	Copper chrome arsenate	40 Years	h5 to H5	01, 02, 03, 53 or 54
ACQ (external)	Alkaline Copper Quaternary	40 Years	h5 to H4	90
TAN E (external)	Copper Azole	40 Years	h5 to H4	58
LOSP (internal and external)	Light Organic Solvent Preservative	25 Years	H2 to h5	19, 24, 25, 39, 41, 48, 49, 62, 70, 71, 72
–	Bifenthrin (internal) generally coloured blue	25 Years	H2F	75

Treatment End Tags

End-tags/burn brands/ink stamps indicate what treatment has been used and the hazard level to which the timber has been treated.

Usage of CCA treated timber

CCA treated timber is suitable for all applications except domestic decking boards, handrails, children's playground equipment, picnic tables and external seating.

Still Ok To Use CCA

All deck framing
Fencing
Screens
Structural Timbers
Cladding
Fascias
Battening

All deck framing
Fencing
Screens
Structural Timbers
Cladding
Fascias
Battening

Not Ok To Use CCA

Children's play equipment
Garden Furniture
Picnic Tables
External Seating
Domestic decking boards
Handrails

Important points regarding CCA

All treated timber manufactured by reputable companies and handled correctly is safe.
CCA treated timber has been used world-wide for more than 70 years without evidence of harm to human or environmental health.
After a 2 year review the government regulatory body APVMA found "there was no compelling evidence from the available data to conclude that there was likely to be an unacceptable risk to public health from exposure to arsenic from CCA-treated timber"
That there was no recommendation to remove existing CCA treated structures illustrates it is not seen as dangerous.
CCA continues to be approved for the majority of outdoor uses i.e. deck structures, pergolas, fencing, landscaping, vege gardens.
However they did take a precautionary approach and restricted CCA treated timber being used in certain applications.

H2-F Information

H2 LOSP treated timber has been used in Australia since the 1990's to protect house framing from termites.
In 2004 pine manufacturers launched a new type of treatment - blue pine framing or H2-F.
Blue pine framing offers:
- A more cost effective option to H2 LOSP
- Better supply to service the increasing demand for termite resistant framing
- Treated to and H2F level is suitable for internal framing applications. Can't be used in external applications.
It has been dyed blue to make it easy to distinguish from untreated framing.
H2-F is suitable for use south of the Tropic of Capricorn.

Treatment Hazard Levels

Hazard Level details:
Level	Hazard Type	Situation	Typical Uses	Typical Treatments
H1	Lyctid Borers	inside above ground	Framing Roof trusses Beams Interior Battens Flooring	LOSP
H2	Insect borers Termites	inside above ground	Framing Roof trusses beams Interior Battens Flooring	LOSP
H2-F	Insect borers Termites	inside above ground	Framing Trusses Roof timber Flooring	Envelope Treatment Bifenthrin Permethin
h5	Moderate fungal decay Termites	outside above ground	Weatherboards Fascia Pergolas Window Joinery Decking Boards Bearers & Joists	CCA ACQ LOSP TAN E
H4	Severe fungal decay Termites	outside in-ground	Fence posts Greenhouses Pergolas Landscaping	CCA ACQ TAN E
H5	Very fungal decay Borers Termites	outside in-ground contact with freshwater submerged in freshwater	Retaining walls Piling House stumps Building Poles Cooling tower fill	CCA ACQ TAN E
H6	Marine Borers Decay	Contact with salt water Submerged in salt water	Boat Hulls Marine piles Jetty cross bracing landing steps	CCA