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Convex Safety Mirrors Ashburton
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Ask the driver of a stock truck where the mirror should sit and they will point further back than you expected. A truck and trailer has to be seen earlier and from further away than a car does, which in practice means a bigger face and a longer sight line than a suburban car park would ever call for. Group One New Zealand supplies and installs convex safety mirrors across Ashburton, with crews travelling down from our Islington base in Christchurch. Sydney Chappell founded the New Zealand company in 2026. Tell us what comes through the gate and we will size it around that.
When the vehicle you cannot see is a truck and trailer
Mid Canterbury runs on primary industry. It contributes 27.0% of the district’s GDP against 6.2% nationally, so a lot of the traffic that needs to be seen is agricultural rather than domestic: tractors with implements, grain trucks, stock units, sprayers and contractors’ floats, all with turning circles that commit them well before the driver can see clear.
The positions that come up most:
- A farm or lifestyle-block gateway pulling out onto a rural road where a shelter belt or a hedge blocks the view
- A merchant or contractor’s yard exit onto a busy town street
- The loading face at a store or a processing site, where trucks reverse across a walking route
- A weighbridge or silo approach where two vehicles meet on one lane
- Aisle intersections inside a shed or store where forklifts and staff cross
- A shared rural-commercial driveway serving several operators
Industries We Serve
We proudly serve clients across a range of sectors, including:
Hospitals
Aviation Surfaces
Schools
Sporting Surfaces
Factory Safety Lines
Body Corporate
Getting a crew to your gate
We travel to the job, which for Ashburton means one trip carrying the ladder, the post, the auger and the levels. So the first questions we ask are about access: where the vehicle can park, what the ground is like where a post might go, and when the gateway is quiet enough to work in without holding anyone up.
Once on site, we look at the problem from where the driver actually sits. A mirror set to a ute’s eye line reads differently from a tractor cab, and higher again from a truck. On a gateway with across it, the stopping point at least stays the same from one vehicle to the next, and the mirror is sighted from there. Then it goes onto whatever is already standing (a post, a wall, a pole, a shed corner) or onto a new post we dig and set. The last step is aiming: tilt it, get back in the vehicle, look again, adjust until the approach is genuinely covered. The same crews work from Amberley in the north through to Timaru in the south, and west towards the foothills.
Why these jobs run to bigger faces
Diameter follows viewing distance, and rural sight lines are long. If a driver is easing out of a gateway and needs to see 60 or 70 metres up a straight road, a small face will show that vehicle as a speck that reads as much further away than it is. The same mirror in a warehouse aisle would be ample.
Mounting height follows the vehicle. High enough to clear a parked trailer and to suit a cab, low enough that it is showing you road rather than shelter belt.
Then the angle. A face pointed into a low morning or evening sun washes out at exactly the hour the milk tanker or the school run goes past, so orientation and the choice between a hooded and an open face get decided together, on the ground. Right size in the wrong place, or right place at the wrong angle, and the blind spot is still sitting there with a mirror over it.
The part that does not come in the box
Every national supplier will courier a convex mirror to a rural delivery address, and there is nothing wrong with the hardware they send. What the carton cannot contain is the decision about which corner it belongs on, how far back from the gateway, at what height, facing which way, and what it can be fixed to. That judgement is the whole job. A mirror bolted up in a plausible-looking spot leaves the danger intact while convincing everyone it is handled, which is worse than an obvious blind corner people already respect.
Faces, formats and the fixings that hold them
Acrylic gives the sharpest image and suits indoor and sheltered positions. Polycarbonate takes a knock without shattering, which is what you want at forklift height or where a load can swing. Stainless steel will not break at all and earns its place where machinery, stock or interference are likely.
Hooded faces suit exposed outdoor gateways where glare, rain and frost are all in play. A half dome handles a T-junction in an aisle; a full dome covers a four-way crossing inside a shed.
Mounts go onto existing posts, walls, poles and shed frames, or onto a new post set in the ground. Brackets and fixings are corrosion protected, with aluminium or stainless hardware where the mirror stays outdoors through a run of hard frosts and nor’west gales.
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Client Testimonials
5.0 Stars / 21 + reviews
The team from Group One were exceptional.
They arrived on time, did a fantastic job and made our childcare centre carpark look like new . Thankyou
Prompt and efficient service.
Very professional and experienced. Syd always answers his phone otherwise calls you back. Highly recommended.
Highly recommended.
Competitive price, quality work and even helped me put up the customer parking signs. Went above and beyond. Thanks very much, Syd and Blake.
Great job and no complaints!
Wonderful to work with and helping us get our line marking completed. Would definitely use again and refer to others.
Highly Recommend Group 1 Linemarking!
We recently hired Group 1 Linemarking for a few of our residential strata projects, and the results exceeded our expectations. The team was punctual, professional, and clearly experienced. The line marking was crisp, precise, and done exactly to spec. Communication throughout the process was smooth, and they were flexible with scheduling, which made things a lot easier on our end. If you need reliable, high-quality line marking services, I wouldn’t hesitate to recommend Group 1. Great job!
Working with Syd and his team is always a pleasure
The quality of work is always to a high standard. The Group One team is always professional, they apply a high standard for safety ensuring their SWMS is tailored for the job and their equipment is serviced and well maintained. I highly recommend Group One and if you use them you won’t be disappointed.
Ashburton District Council on fences, retaining walls and boundaries
The mirror is rarely the consent question. Whatever holds it up often is, and this district publishes clear guidance.
Ashburton District Council states you can build a fence up to 2.5 m in height measured from natural ground level, and recommends talking to the Planning Department about a resource consent for anything over 2 m. A fence on top of a retaining wall needs a building consent where the retaining wall is more than 1.5 m and the fence more than 2.5 m, and if the fence and the retaining wall are joined, a building consent is required. The Council also advises finding your boundary pegs, or having the boundary surveyed, before a fence goes in.
That last point is worth a moment on a rural gateway, where a mirror mounted for the best view sometimes wants to sit on a post that is not quite on your land. Confirm the boundary and the council position first; we will install to whatever is agreed.
Costing it: what we need to see first
Pricing is on quote, after a site visit, and there is a reason nobody sensible quotes a rural gateway over the phone. The variables:
- How many mirrors the site needs, and whether one well-placed face answers two approaches
- Face diameter, which on these jobs is usually driven up by the viewing distance
- Whether there is a sound structure to mount to, or a post has to be dug and set
- Ground conditions where that post goes
- Indoor or outdoor, and the corrosion grade of the fixings
- Hooded or open face
- Access, and how much of the gateway can be closed while we work
Contact us for bespoke pricing. Quotes are written, in New Zealand dollars, and come after someone has stood in the gateway.
Call 027 424 0600 to Request a Free Quote
When it gets knocked, or the yard changes
Implements catch posts. It is a normal part of farm life, and it is a normal call for us: we come back, straighten it and re-aim it.
Layouts move as well. A new shed goes up, the stack shifts, a second gateway opens and the traffic reverses direction, and the mirror that was right last harvest is now showing you a wall of baleage. We come back out, look again from the driver’s seat, and re-angle or relocate. We guarantee all the work we do.
Group One New Zealand, and the check before the auger
Anything mounted on a boundary fence or a retaining wall in this district has to be read against Ashburton District Council’s rules first, and that check belongs in the quote rather than in a phone call afterwards. Sydney Chappell founded Group One New Zealand in 2026, and we are a small team, so you know you’ll get the very best. In the company’s own words: “Although Group 1 Line Marking has just started here in New Zealand, as a group we have been operating in Australia for almost 25 years.” Full details of the range sit on our page.
Arrange a site visit
Timing matters more on a rural gateway than it does in town. It is easiest to assess when the trucks are actually moving through it and easiest to work in when they are not, so the visit is worth booking ahead of the cartage season rather than in the middle of it.
Phone us on 027 424 0600 or email info@groupone.co.nz, 7am to 3pm Monday to Friday. Group One New Zealand, Unit 1, 37 Foremans Road, Islington, Christchurch 8042. NZBN 9429053752833.
Call 027 424 0600 to Request a Free Quote
Comprehensive Line Marking & Safety Services
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Areas We Serve
- Convex Safety Mirrors Amberley
- Convex Safety Mirrors Ashburton
- Convex Safety Mirrors Christchurch
- Convex Safety Mirrors Darfield
- Convex Safety Mirrors Kaiapoi
- Convex Safety Mirrors Methven
- Convex Safety Mirrors Rangiora
- Convex Safety Mirrors Rolleston
- Convex Safety Mirrors Timaru
Other Services Available in Ashburton
- Automatic Gates Ashburton
- Bollards Ashburton
- Commercial Gates Ashburton
- Custom Gates Ashburton
- Driveway Gates Ashburton
- Gate Access Systems Ashburton
- Industrial Gates Ashburton
- Line Marking Ashburton
- Safety and Palisade Fencing Ashburton
- Security Gates Ashburton
- Speed Humps Ashburton
- Wheel Stops Ashburton
Questions from farms and merchant yards
How much does a convex mirror cost?
It is quoted per site rather than per item, because the mirror is the smaller part of it. Diameter, the mount, whether a post has to go in, the fixing grade and the access all move the number. Tell us the location and we will come and look, then put a written quote in front of you. Ignore the prices you see on overseas pages; they are not New Zealand supply, let alone New Zealand installation.
Do you need permission to put up a convex mirror?
On your own land, on your own building or an existing compliant structure, usually not. It turns on what carries it. In this district the numbers to know are Ashburton District Council’s 2.5 m fence height from natural ground level, its recommendation to talk to the Planning Department above 2 m, and the building consent triggers around fences joined to retaining walls. If the mount is on a boundary or the mirror looks into the road, check with the council first.
Are there rules for where a convex mirror goes?
Three that we work to, every time. It has to be visible from the driver’s actual eye position, not the surveyor’s. It has to be big enough for the distance being viewed. And it has to be aimed at the hazard, not at the road in general. Miss any one of them and the mirror is decoration.
What are the disadvantages of convex mirrors?
The curve that widens the view compresses distance, so a truck looks smaller and further off than it really is, and speed is hard to judge. Sharpness also drops toward the edge of the face. On a rural road where traffic is moving at open-road speed that trade-off matters, which is exactly the conversation to have on site before anything is mounted.
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