Mabons Timber Protection

HAZARD SELECTION GUIDE

Hazard class	Exposure	Specific service conditions	Biological hazard	Typical users
H1	Inside, above ground	Completely protected from the weather and well ventilated, and protected from termites	Lyctids	Susceptable framing, flooring, furniture, interior joinery
H2	Inside, above ground	Protected from wetting, Nil leaching	Borers and termites	Framing, flooring, and similar, used in dry situations
H3	Outside, above ground	Subject to periodic moderate wetting and leaching	Moderate decay, borers and termites	Weatherboard, fascia, pergolas (above ground), window joinery, framing and decking
H4	Outside, in-ground	Subject to severe wetting and leaching	Severe decay, borers and termites	Fence posts, greenhouses, pergolas (in ground) and landscaping timbers
H5	Outside, in-ground contact with or in fresh water	Subject to extreme wetting and leaching and/or where the critical use required a higher degree of protection	Very severe decay, borers and termites	Retaining walls, piling, house stumps, building poles, cooling tower fill
H6	Marine waters	Subject to prolonged immersion in sea water	Marine wood borers and decay	Boat hulls, marine piles, jetty cross-bracing, landing steps and similar

Miscellaneous Timber Species Durability & Strength

SOME AUSTRALIAN SPECIES

Species	Colour	Hardness Rating	Durability Rating	Strength Group
			above in ground ground
Alpine Ash	Light straw	675	3 4	SD4
Mountain Ash	Light straw	680	3 4	SD3
Blackbutt	Pale yellowish brown	930	1 2	SD2
Box - Grey	Dark browns & reds	1075	1 1	SD1
Brush Box	Pinkish grey / reds / browns	880	3 3	SD3
Ironbark - Grey	Dark browns & reds	1075	1 1	SD1
Ironbark - Red	Dark reds	1220	1 1	SD3
Kauri - N.Z.	Pale pink / reddish brown	480	4 4	SD8
Karri -W.A.	Pink / dark reddish brown	910	2 3	SD2
Mahogany - Red	Dark red	995	1 2	SD3
Messmate-Gympie	Yellowish to greyish brown	1010	1 1	SD3
Pines - Slash	White / pale yellow	625	4 4	SD5
Pines - Cypress	white/black	675	1 2	SD6
Spotted Gum	Pale to dark browns	1010	1 2	SD2
Sydney Blue Gum	Dark pink to red brown	895	2 3	SD3
Tallowwood	Yellowish brown / olive 20 tinge	1010	1 1	SD2
Turpentine	Dark pink to reddish brown	945	1 2	SD3

SOME IMPORTED SPECIES

Balau	Red	840	4 4	SD4
Balua-otherr	Yellow	900	4 4	SD3
European beech		670	4 4	SD4
Red cedar	Red browns	380	2 2	SD8
Western red cedar	Red	380	2 2	SD8
Douglas fir-North American	reddish brown	560	4 4	SD5
Douglas fir-NZ		480	4 4	SD6
Kauri		480	4 4	SD7
Kwila( Merbau)		830	1 3	SD3
Meranti	Dark red	670	3 4	SD6
Meranti	Light red	560	4 4	SD7
Meranti	White	705	4 4	SD5
Meranti	Yellow	660	4 4	SD6
Oak- American	Red	690-770	4 4	SD6
Oak- American	White	740-760	4 4	SD6
Pine-Radiata		490	4 4	SD7
Rosewood		610	2 3	SD5
Teak		670	1 2	SD6