Canopies and trays: why payload is the number that catches people
Most people choose a canopy on looks, storage layout and price, then discover the number that actually governs the decision much later — usually at a weighbridge, or after a suspension shop tells them why the back of the ute is sitting on the bump stops.
That number is payload. It's the difference between what your ute legally weighs loaded (its GVM) and what it weighs empty. Everything you add comes out of it: the canopy, the tray if you fit one, the bar, the winch, the drawers, the fridge, the water, the second battery, the passengers, the dog, and the download weight of anything you're towing. Utes are sold on the idea that they carry a tonne. Once you've built one for touring, the honest figure is often a fraction of that.
So the first question isn't aluminium or fibreglass. It's how much weight you've got to spend.
Work out your payload before you shop
Do this before you look at a single product.
- Find your GVM — it's on the vehicle's identification plate and in the owner's manual.
- Find what your vehicle actually weighs *now*, with the accessories already on it, a full tank of fuel, and ideally you in the driver's seat. Don't use the brochure kerb weight. Take it to a public weighbridge — it's cheap and it's the only honest number.
- Subtract. What's left is what you have to spend on a canopy, its contents, your passengers and your towball download.
Two things that surprise people:
- Towball download counts against your payload. If you're towing a van with a 250 kg ball weight, that's 250 kg gone from the ute before you've packed a thing.
- Brochure kerb weights are optimistic and rarely reflect the exact build in your driveway.
If the remaining number is uncomfortably small, your options are to build lighter, or to look at a certified GVM upgrade before you commit. Our suspension guide covers what that involves.
Tub or tray: it's a different fitment question
These are two different products and two different conversations with a retailer.
Tub canopies sit on or over the factory tub. They're generally lighter and cheaper, keep the vehicle looking close to standard, and don't change what the vehicle weighs by much. They're constrained by the tub's shape and by what the tub can carry — a tub is a pressed panel, not a chassis-mounted structure, so heavy roof loads on a tub canopy need care.
Tub canopy fitment is tight. Tub dimensions and rail profiles vary by series, by cab configuration and sometimes with factory tub liners or sports bars. This is a place where "suits Ranger" is genuinely useless — you need the series, the cab configuration and confirmation that it clears whatever's already on the tub.
Trays replace the tub entirely and mount to the chassis. That gives you a flat, square, chassis-mounted platform, more usable width, and a structure designed to carry weight, including a canopy with gear on the roof. It's the durable answer for a serious touring or work build.
The catch is weight and paperwork. A steel tray plus a steel canopy can consume a large share of your payload before you load anything into it. Removing the tub gives some back, but rarely as much as people hope. Because you've changed what the vehicle weighs, you should re-weigh it afterwards, and depending on your state and what you've done, there may be modification or registration implications worth checking with your state road authority.
Tray fitment is a different problem from tub fitment: it's about chassis rail dimensions, cab-chassis versus pick-up, wheelbase and cab configuration. A canopy sold for a tray is usually specified by tray dimensions rather than by vehicle, so you need both sets of numbers.
Aluminium, fibreglass, steel
There's no best material — there's a best fit for what you're doing.
Aluminium is the default for touring canopies. Good strength for its weight, doesn't rust, and easy to fit out with drawers, slides, water tanks and 12V. Usually the lightest of the practical options once you're talking about a canopy you'll actually load up. It dents rather than springs back, and a well-built one costs real money — the cheap ones are cheap because of thinner sheet, lighter framing and worse sealing.
Fibreglass is common as a tub canopy, often colour-matched, and generally the quietest and best-sealed option for keeping dust and water out. Lighter than steel. Repairable, though a good repair is a specialist job. It's less suited to heavy roof loads and hard bush work, and it doesn't take mounting hardware as happily as metal.
Steel is the heaviest by a distance, and the toughest. It's the choice for genuinely abusive work use where you'll weld a bracket on whenever you need one. For a touring build the weight is usually the wrong trade — a steel canopy and steel tray combination can consume most of what a dual cab ute has to give.
Whichever you pick, ask for the actual weight of the exact configuration you're quoting, including doors, racks and any fit-out. Base weights in a brochure rarely include the bits you want.
Sealing, dust and the things that ruin a trip
Australian dust finds everything. When comparing canopies, the things that decide whether you'll be happy after 500 km of corrugations are unglamorous:
- Door seal design and the number of latch points.
- Whether the canopy is pressurised or vented in a way that keeps dust out.
- How the canopy mounts, and whether the mounts can work loose on corrugations.
- Whether the roof is rated for what you want to put on it, and whether that rating assumes a tray-mounted canopy or a tub-mounted one.
Ask what the roof is rated for, dynamic and static, before assuming a rooftop tent is an option. Our roof rack guide explains why those two numbers are very different.
Before you buy
- Weigh your vehicle as it currently sits, at a public weighbridge, before choosing anything.
- Work out your remaining payload, and subtract your towball download if you tow.
- Get the real weight of the exact canopy configuration you're quoting, fit-out included.
- For a tub canopy: confirm the retailer lists it for your series, build date and cab configuration, and tell them about any liner, sports bar or tonneau hardware already fitted.
- For a tray: confirm chassis compatibility, and get the tray's own dimensions before ordering a canopy to sit on it.
- Ask what the canopy roof is rated to carry, dynamic and static.
- Check whether swapping a tub for a tray has any modification or registration implications in your state.
- Quote your VIN, and confirm the retailer's fitment claim covers your exact vehicle before paying.
FAQ
Why is payload the number that catches people?
Payload is GVM minus what the ute weighs empty, and everything you add comes out of it — the canopy, tray, bar, winch, drawers, water and even the download weight of a trailer. A steel tray plus a steel canopy can consume a large share of that budget before you load anything into it.
What's the difference between a tub canopy and a tray?
A tub canopy sits over the factory tub, is generally lighter and cheaper, and stays close to standard — but it's constrained by the tub's shape and by what the tub can carry. A tray replaces the tub entirely, mounts to the chassis, and is a structure designed to carry weight, including a canopy with gear on the roof.
Does towing reduce my payload?
Yes. Towball download counts against your payload — a 250 kg ball weight is 250 kg gone from the ute before you've packed a thing.
Which material is best for a canopy?
There's no best material. Aluminium is the default for touring, good strength for weight and easy to fit out. Fibreglass is quiet and well-sealed but less suited to heavy roof loads and hard bush work. Steel is the toughest and the heaviest by a distance — usually the wrong trade for a touring build.
This guide is general information, not fitting or engineering advice. Fitment, compliance and safety depend on your specific vehicle — confirm with the retailer and a qualified fitter before you buy.