Specification guide · Orange · Central West NSW

Choosing a fence material for Orange: what actually lasts at 860m

For nine out of ten Orange houses the right answer is 1.8m Colorbond on 65mm galvanised posts at 2.4m bays, concreted 750mm deep, at $90 to $130 per metre installed. That buys 20 to 30 years with no painting. Treated pine paling at $110 to $180 per metre is the value option but gives 10 to 15 years. Hardwood at $150 to $230 per metre is the one to pick when the look matters more than the maintenance. The material is the easy decision. The post and the footing are what decide whether the fence is still straight in 2050.

Get a written quote See 2026 prices

Orange is not a coastal fencing market and it should not be specified like one. We are about 250km from the sea, so the salt corrosion that drives coastal steel selection is irrelevant here. What we get instead is altitude: hard frosts from roughly April through to October, snow in some winters, dry westerlies with a long open run at them, high UV, and the heavy basalt derived clay that comes off Mount Canobolas. Every material choice below is judged against those four things and nothing else.

Fence specification comparison for the Orange climate

Costs are 2026 supplied and installed rates for the Orange region. The life column assumes our standard 750mm footings. Drop the footing depth and every figure in that column drops with it.

Option	Typical 2026 cost	Life in Orange	Maintenance load	Typical warranty	Who it suits
Colorbond steel, 1.8m, 0.35mm sheet	$90 - $130 per m	20 to 30 years	Almost none, hose it once a year	10 to 15 years on the sheet, conditional	The default Orange backyard boundary
Colorbond steel, 2.1m	$120 - $165 per m	20 to 30 years	Almost none	Same as the 1.8m system	Privacy from a two storey neighbour, wind screening
Treated pine paling, H4 posts, H3 palings	$110 - $180 per m	10 to 15 years	Oil or stain every 3 to 4 years	15 to 25 years on the treated post only	Budget replacement, side boundaries out of sight
Hardwood paling, lapped and capped	$150 - $230 per m	15 to 25 years	Oil every 3 to 4 years to hold the colour	Workmanship only, timber is a natural product	Heritage streets, front returns, character homes
Steel post with timber palings (hybrid)	$130 - $200 per m	18 to 25 years	Oil the timber, ignore the posts	Post and paling warranted separately	Timber look without the rot point in the ground
Heritage timber picket, front fence	$160 - $300 per m	15 to 25 years	Repaint every 5 to 7 years	Workmanship only	Central Orange and Millthorpe period frontages
Flat top aluminium, powder coated	$180 - $260 per m	25 to 40 years	None beyond washing	10 to 15 years on the powder coat	Pool barriers to AS 1926.1, open front fences
Semi frameless glass pool fence	$350 - $500 per m	25 years plus	Cleaning, and that is the real cost	Spigots and glass warranted separately	A pool with a view worth keeping
Timber post and rail, rural	$7,000 - $12,000 per 100m	20 to 30 years	Check and reset rails every few years	Treatment warranty on the posts	Horse blocks and entrances at Borenore or Clifton Grove
Hinge joint and plain wire, rural	$1,500 - $3,500 per 100m	20 to 30 years	Retension the strains after two summers	Galvanising grade governs the life	Stock containment on grazing country

Indicative Orange region rates for 2026. Slope, rock, access and old fence removal move every line. Full breakdown on the pricing page, and the sizing maths is on how much fencing you need.

What the numbers on the product actually mean

Four ratings do almost all of the work in a fencing quote. Understand these and you can read any quote in the Central West and see immediately where the money went, or did not go.

H3, H4 and H5 on timber. These are hazard classes under AS 1604, the Australian Standard for preservative treated timber. H3 is for above ground, outside, out of the soil. H4 is for in ground contact. H5 is for in ground contact in wet or severe conditions. Any post going into dirt must be H4 as an absolute floor, and on a boggy paddock corner out at Spring Hill, H5 is the honest call. Palings above the ground can legitimately be H3, and that is normal rather than a corner cut.
0.35mm BMT on steel. BMT is base metal thickness, the steel itself before any coating. 0.35mm is the standard residential fencing sheet nationally. A heavier sheet dents less when a wheelie bin gets away from you, but it does not extend the life of a fence in Orange, because the sheet is not the part that fails here.
The zinc coating on posts and rails. A galvanised post carries a zinc coating measured in grams per square metre, and the higher that number the longer the post survives the permanently damp band of clay at ground level. This is exactly where cheap imported posts get thin, and it is invisible the moment the fence is up. Ask for the coating figure and ask for it in writing on the quote.
Baked on finish versus powder coat. Colorbond sheeting is coil coated and oven baked at the steel mill, which is why it holds colour through our UV without repainting. Powder coating is applied to a fabricated part, which is the right process for aluminium pool fencing and gate frames. Neither is better, they are for different jobs. What you do not want is a site painted post, which will be flaking by its fourth winter.

Not sure which specification your block needs?

We measure the run, test the ground, and put the post section and footing depth in writing on the quote so you can compare it line for line against anyone else.

Get a free measure Colorbond vs timber

Local conditions

The four things about Orange that decide the specification

Reactive basalt clay, not frost, is the main enemy

Most people assume the frost lifts the posts. True frost penetration in Orange is shallow, usually only the top hundred millimetres or so of soil, and on its own it does not pull a fence apart. The real driver is the red and brown basalt derived clay under most of this city, which swells as it takes up winter rain and shrinks hard through a dry February. That is the same seasonal movement the residential footing standard describes as moderately to highly reactive ground, and it works a shallow post loose season after season. Our answer is a wider hole and a deeper plug of concrete: 300mm diameter, 750mm deep for a 1.8m fence, stepped deeper again on the worst ground.

Westerlies load a solid fence like a sail

A 1.8m Colorbond fence presents 1.8 square metres of solid surface for every metre of length, and Orange sits in the non cyclonic wind region with long open approaches from the west and south west. On an exposed rear boundary in North Orange, or on a rise at Clifton Grove, a 65mm post at 2.4m centres is the sensible minimum and a third rail earns its keep. On a sheltered inner suburban side boundary a 50mm post is genuinely adequate and paying for more is paying for nothing.

Freeze and thaw is what kills timber here

Water gets into the end grain of a paling, freezes overnight, expands and splits the fibre a fraction further with every frost. That is why an unoiled paling fence in Orange weathers visibly faster than the identical fence in Sydney, and why we seal cut ends on site. Any cut through treated timber exposes untreated heartwood, so a post cut to length and dropped straight in the hole has lost its treatment envelope in the one place that matters most.

Rock, and where it is

Volcanic float and basalt blocks are common on the Canobolas side of town, out through Nashdale and toward Borenore. Hitting rock is not a disaster, it just changes the tool. Rock augering runs $15 to $40 per post on top of the fence rate. A quote for a block in those areas with no rock allowance and no variation clause is a quote that is going to grow after the first day.

The cheap specification that fails early in Orange

This is the combination we pull out of the ground most often, usually 8 to 12 years after it went in, on fences that should have lasted 25 years.

H3 posts in the ground. Saves roughly $6 to $10 per metre and costs you the whole fence. It looks perfect until the day a post snaps off at the soil line in a westerly.
600mm footings borrowed from a coastal spec. Saves about fifteen minutes and a shovel of concrete per hole. On reactive clay it is the single most common reason a fence in this district leans.
A 150mm to 200mm hole instead of 300mm. A skinny concrete plug has almost no resistance to being levered sideways by wind or worked loose by clay movement. Hole diameter matters far more than most people expect.
Timber palings hard down on the soil. That wicks moisture straight up the grain. Leave 50mm to 100mm of clearance, or run a treated plinth board along the bottom.
Unsealed cut ends and unpainted cut edges. Both are five minute jobs on site, and both are the first place a fence starts to go.
No capping on a Colorbond fence. An open top rail collects water and grit and stains the sheet from the inside out.

If your existing fence has two or three of these and it is already moving, read how long a fence lasts in Orange before you decide between repair and replacement.

What sales words like commercial grade are worth

There is no Australian Standard called commercial grade fencing. It is a marketing term. That is not dishonest of itself, it is just empty until somebody attaches a number to it. When you hear it, ask three questions: what is the post section and wall thickness, how many rails, and what is the coating. If the answer is a genuine move from a 50mm post to a 65mm post, from two rails to three, or from a light zinc coating to a heavy one, then the extra $8 to $15 per metre is real value on an exposed boundary. If the answer is a shrug, you are paying for a word.

The same test applies to premium, heavy duty and builder grade. Builder grade in particular usually means the opposite of how it sounds: the lightest specification that will pass, chosen because a project builder is buying four hundred of them at once. It is a perfectly good fence on a sheltered side boundary in a new estate and a poor one on a windy rear line.

What we recommend for the typical Orange house

Brick or weatherboard home on a suburban block, boundary fence being replaced: 1.8m Colorbond in a stocked colour, 65mm galvanised posts at 2.4m bays, three rails on any run longer than about 25m or on an exposed westerly line, 300mm holes at 750mm deep, capping fitted, and 50mm to 100mm of clearance at the bottom so the sheet is never standing in wet clay. That is $90 to $130 per metre, so $3,600 to $5,200 for a 40m side, and it is usually shared with the neighbour under the NSW Dividing Fences Act 1991. Material detail sits under Colorbond fencing and timber fencing, and paddock specifications are on the rural fencing page.

When you should not spend the money

If the sheeting is sound and only two or three posts have moved, do not replace the run. Resetting posts and re-hanging the existing panels normally costs 30 to 40 per cent of a new fence, and on a ten year old Colorbond line that is the right call. If you are selling within six months, a straightened and cleaned fence reads to a buyer almost as well as a new one. And if your neighbour is planning a pool or a shed against that boundary next year, wait: building a fence and then cutting it open for a bobcat means paying twice. We will tell you that at the measure rather than after the invoice. Staging and timing options are set out on the budget boundary fence page, and if you are weighing up doing it yourself, start with DIY versus professional fencing.

Specification questions we get asked

What fence material lasts longest in Orange NSW?

Colorbond steel on galvanised posts is the longest lasting mainstream option here at 20 to 30 years, because Orange sits about 250km inland and salt corrosion is not a factor. Hardwood runs 15 to 25 years and treated pine paling 10 to 15. In every case the footing decides the outcome long before the material does.

What does H4 mean on a fence post?

H4 is the hazard class under AS 1604 for timber in ground contact, and it is the minimum for any post concreted into soil in Orange. H3 is rated only for above ground exposure and can rot out in 5 to 8 years once it is buried. If a quote lists H3 posts, that is the cheap specification that fails early here.

Is 0.35mm Colorbond steel thick enough for a fence in Orange?

Yes. 0.35mm base metal thickness is the standard sheet used in residential Colorbond fencing across Australia and it copes with Orange conditions without trouble. What matters far more is the post section, the footing depth and whether the bottom rail sits clear of soil. Sheet thickness is the number that gets argued about and the one that changes the least.

How deep should fence posts go in Orange?

For a 1.8m fence we set posts in a 300mm hole about 750mm deep, rather than the 600mm a coastal installer would use. Orange has reactive basalt clay that swells and shrinks through the year plus a long run of frost nights, and shallow footings get worked loose from both directions. On rocky volcanic ground we auger rather than hand dig, which adds $15 to $40 per post.

Is commercial grade fencing worth paying for?

Commercial grade is a sales phrase, not a standard, so ask what it actually changes. Going from a 50mm post to a 65mm post, or from two rails to three, costs roughly $8 to $15 per metre and is worth it on an exposed westerly boundary. A heavy duty sticker with no change to post section, rail count or coating is worth nothing.

What should I choose for a typical Orange house?

1.8m Colorbond in a stocked colour on 65mm galvanised posts at 2.4m bays, concreted 750mm deep, at $90 to $130 per metre installed. A 40m backyard side lands at $3,600 to $5,200 and the neighbour normally pays half. Choose timber where the streetscape, a heritage setting or a rural entrance calls for it, not to save money.

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Get the exact specification for your block in writing

Send the details and we will measure the line, check the ground for rock and reactive clay, then email a fixed written quote with post section and footing depth listed, within 2 business days.

Compare our specification against your other quotes

Post section, hole size, footing depth and rail count, all itemised. Free measure across Orange, Lucknow, Spring Hill, Millthorpe, Clifton Grove and Borenore.

Get a quote online How to choose a fencer