Weber Slate Griddle Review: Built Like a Tank

Weber isn’t new to flat-top cooking. They’ve offered griddle inserts for their gas and charcoal grills and dabbled with a more bare-bones griddle, leaving us underwhelmed.

With the Slate, Weber has come in guns blazing, targeting backyard cooks who want more than just a hot slab of steel.

I’ve spent time cooking on the Slate and comparing it head-to-head with its biggest rival, the Traeger Flatrock. In this review, I’ll explain what I liked about the Slate, where it comes up short, and who it’s best suited for.

Weber supplied this griddle for free in exchange for an honest review; all opinions are our own.

Who Is the Weber Slate For?

The Weber Slate is for backyard grillers who want a full-featured griddle with solid build quality, ample cooking space, and thoughtful storage. It’s not the most compact or portable unit, but for those setting up an outdoor kitchen it’s a great choice.

You should consider the Slate if you’re upgrading from a basic Blackstone and want better build quality and something that matches your existing Weber gear. Note that the grease port is positioned on the front left.

Design & Features

Out of the box, the Weber Slate feels premium. The lid is nice and solid. No rattling or cheap tin can feel when you open and close it.

It’s Weber’s biggest griddle and you can tell. It’s got some serious heft and a clean finish that fits right in with the rest of their lineup.

You can also get the Slate in 30″ and 28″ sizes, both of which come with 3 burners.

You get two 17-inch side tables, but only the right one folds down. The left side is fixed because that’s where the propane tank mounts, which honestly doesn’t bother me.

What I really love is the little bonus shelf off to the side. It’s not huge, but I use that thing all the time. Super handy for keeping seasonings or tools right where I need them.

Underneath, there’s a full-size cabinet that is great for stashing tools, liners, or anything else you want out of sight.

The ignition is a simple, mechanical snap-style, and it fires up quickly and reliably every time.

For tracking your fuel, it has a basic needle-style gauge that shows how much propane you’ve got left. No electronics are needed, and it gets the job done.

There’s also a battery-powered temp display built into the front. I tested it against my infrared thermometer, and it gave a pretty solid average across the griddle. Nice to have, especially when you want a quick temp check without pulling out a separate tool.

Weber added its own version of Traeger’s pop-and-lock system for adding accessories. I’ve got some tool hooks on mine, and you can get extras like a spice rack or drink holder. Fair warning, though: Your drink will get warm fast sitting next to a hot griddle so you’ll need to consume it quickly.

Griddle Top & Seasoning

The Slate comes with a pre-seasoned griddle top, and Weber says it’s ready to cook on straight out of the box. I still went ahead and seasoned it myself. That’s just a habit I have with any new griddle.

I like to lay down a few coats before the first cook to ensure I have a solid nonstick surface and to help protect the steel over time.

I haven’t had any issues with food sticking.

The cooktop is also rust-resistant, which is a big plus if you’re storing it outdoors or dealing with humidity. It feels heavy-duty and heats evenly, with no noticeable hot or cold spots during my cooks.

That lid should offer decent protection from the elements, although I always recommend using a cover if you’re going to store your griddle outside. Remember, the lid is intended to protect the surface and is not to be used while cooking.

Weber includes built-in wind guards to protect the burners and help keep temperatures steady during breezy conditions. It’s a smart design feature, but I didn’t get a chance to test it out myself since we do all our cooking and filming indoors at the studio.

Footprint & Portability

I was shocked when I first saw the Weber Slate in store. This is NOT a compact griddle.

It is 77 inches wide with the lid open and 36 inches deep, so it’s a big presence on any patio. While that size gives you a spacious 756 square inches of cooking surface, it also means you’ll need to plan where this griddle lives.

At 198 pounds, it’s a hefty unit to move, and only one of the side shelves folds down. That fixed shelf adds at least an extra 23 inches to the footprint compared to something like the Traeger Flatrock, where both shelves collapse for easier storage.

When it comes to wheels, the Slate has four rotating casters, but only two of them lock.

Assembly Tip: Make sure you place the locking casters in front during assembly.

If you’ve got a dedicated space for your griddle and care more about stability, cooking area, and storage, the Slate’s bulk is a trade-off you may welcome. But if you’re tight on patio space or like to tuck your grill away when not in use, the Slate might feel a bit unwieldy.

Cooking Tests

I’ve cooked a lot of different meals on the Slate, and it handles everything I throw at it. Smash burgers, fried rice, pancakes, eggs, bacon, sausage links. It cooks all of them evenly and with plenty of power.

I even did up a big batch of meatballs, which I like to precook and freeze for quick weeknight dinners. It’s just a great all-around griddle for this kind of everyday cooking.

Even though Weber says it’s good to go out of the box, I went ahead and gave the griddle top three coats of seasoning before I started. That’s just how I roll. I don’t like taking chances with food sticking.

After seasoning, everything’s been sliding around like it should.

Cleaning

Cleaning the Slate has been super straightforward. The grease management system works just like you’d hope with everything running toward the front-left grease port. This funnels everything into a tray with a disposable liner underneath.

I like that the liner can be reused a few times before swapping it out, so you’re not wasting one after every cook. After I’m done cooking, I scrape everything toward the port, wipe the surface down, and I’m good to go.

The flat top cleans up easily, especially now that it’s seasoned well. I’ve also tossed the removable side shelf insert in the dishwasher a couple of times, which is a nice touch you don’t see on a lot of griddles.

Overall, the cleanup is quick and painless, which makes me want to use it more often.

How the Slate Compares VS the Competition

Compared to other high-end griddles, the Weber Slate holds its own and then some. It’s got a beefier feel than any Blackstone I’ve used, with better build quality and more thoughtful features.

The cabinet base, extra side shelves give you great storage.

When you compare it to something like the Traeger Flatrock, it really comes down to what matters more to you.

The Flatrock is easier to move thanks to four locking casters and both side tables folding down, which makes it a better fit for tighter spaces or frequent repositioning.

The Traeger also has some cool tech, like an electronic fuel sensor that tells you how much propane you’ve got left. But to use that feature, you’ll need to plug it into power.

The Weber Slate, on the other hand, doesn’t require electricity for anything. It’s fully mechanical from the snap ignition to the analog fuel gauge and battery-powered temp display.

That simplicity makes it a great option if you want something that’s always ready to go without cords or outlets. So while the Flatrock leans more into tech and mobility, the Slate gives you more cooking space, built-in storage, and a truly self-contained setup that’s ready whenever you are.

	Weber Slate	Traeger Flatrock
Cooking Area	756 sq in	594 sq in
BTUs	48,000	47,000
Burner Style	Straight	Horseshoe-shaped
Grease Port	Smaller, cooler	Larger, hot exhaust zone
Shelves	One folds + bonus shelf	Both fold
Storage	Cabinet + bottom shelf	No bottom storage
Ignition	Snap Ignition	Electronic (9v battery or plug-in)
Mobility	2 locking casters	4 locking casters
Requires Power?	No	Only for full functionality
Price	Check latest price	Check latest price

If you want a well-designed griddle that’s less expensive than either of these options, you should also check out the Camp Chef Gridirion. It’s about the same size and has 4 burners. The cart isn’t as well built, but the griddle top itself is excellent.

Also, make sure to check out all our recommendations for the best gas griddles.

Our Final Verdict

The Weber Slate is a thoughtfully designed griddle that punches above the average backyard flat top. It’s roomy, solidly built, and doesn’t need to be plugged in to perform.

Compared to its main rival, the Traeger Flatrock, it trades some portability for more storage and cooking space. If you’ve got the patio space and want a versatile, high-end griddle that’ll match your Weber setup, the Slate is an easy recommendation.