The Ultimate Braai Grid Guide - Cast iron, stainless steel, folding, extendable — and everything else you need to know

Most braai buying decisions get poured into the braai itself — the size of the firebox, the brand, the finish. The grid, the one piece of metal actually touching your meat, is usually an afterthought. That's a mistake. A worn, warped, or wrong-sized grid can undo a perfectly good fire and a well-marinated boerewors. This guide walks through what actually matters when choosing a braai grid, how cast-iron stacks up against stainless steel, which grid style suits which braai, and how to keep whichever one you choose in good shape for years.

What to consider before you buy

Before getting into materials and styles, a few practical questions narrow the field fast:

•       Fit. Braai grids are not universal. Measure your firebox or braai opening (length and width) before shopping, and check whether your braai is a recognised brand — Megamaster, Jetmaster, Cadac, Weber and similar brands often have grids sized specifically for their models.

•       Material. Cast iron, stainless steel, and chrome-plated steel each behave differently under heat and each demand a different level of maintenance. More on this below.

•       Mesh size. A tighter mesh (smaller apertures) keeps boerewors coils, chicken wings, and fish from falling through or sticking in gaps. A 25mm x 25mm aperture is a common, versatile standard.

•       Portability vs permanence. Is this grid living in a built-in braai forever, or does it need to fold flat for a camping bakkie or a caravan cubby?

•       Budget and lifespan. A cheap grid that warps or rusts within a season cost more over three years than a well-made stainless grid bought once.

Cast iron vs stainless steel: the real comparison

This is the debate that comes up every single time someone shops for a new grid, so it's worth breaking it down feature by feature.

Heat retention. Cast iron is the heavyweight here — literally. Its thermal mass means it takes longer to heat up (15–20 minutes to properly preheat) but once hot, it holds that heat with remarkable consistency, even when cold meat hits the surface. Stainless steel heats up faster and responds quickly to temperature changes, but it also cools down quicker once the coals die back.

Searing power. Because cast iron loses less heat on contact, it delivers deeper, more even browning and those classic thick braai marks through better Maillard browning. Stainless steel still sears well, but the marks tend to be lighter and less pronounced.

Maintenance. This is where cast iron asks more of you. It needs regular oiling (seasoning) to build up a non-stick surface and prevent rust, and it should be dried immediately after washing. Stainless steel is close to maintenance-free — a scrape and a wipe is usually enough.

Rust resistance. Cast iron is genuinely vulnerable if its seasoning wears thin or if it's left wet. Stainless steel (particularly 304-grade, which most quality South African grids use) shrugs off rust and corrosion, which matters a lot near the coast.

Lifespan. A cast iron grid that's properly cared for can outlast the braai it sits in — but “properly cared for” is doing a lot of work in that sentence. Stainless steel is simply more forgiving; it stays durable and won't chip or flake even with inconsistent care.

The short version: Cast iron rewards attention with unbeatable searing and heat retention. Stainless steel rewards neglect by not punishing you for it.

Should you choose cast iron for a gas braai?

Gas braais already solve the problem cast iron is best at solving — they deliver stable, adjustable heat at the turn of a dial, so you don't need cast iron's thermal mass just to avoid hot-and-cold swings. For that reason, most gas braai grids ship in stainless steel or chrome, prioritising quick cleanup and corrosion resistance over raw heat retention.

That said, cast iron hasn't disappeared from the gas braai world — it's just been repositioned as a searing tool rather than the everyday grid. Weber, for example, sells cast iron griddle inserts sized specifically for its Q-series gas braais (half and full griddles for the Q1000/Q1200, Q2000-series, and Q3200 ranges), letting you drop a cast iron surface onto a gas braai when you specifically want a hard sear or a flat cooking surface for breakfast fry-ups, and lift it back out when you're done.

So the honest answer: you don't need cast iron on a gas braai, but it's a genuinely useful add-on if you want the option of a proper sear or a griddle surface without giving up the convenience of gas day to day.

The main types of braai grids

Once you've settled on a material, you'll find grids come in several distinct formats:

•       Flat mesh grids — the standard round-bar grid most people picture, with an open mesh that lets fat and juices drip onto the coals for that classic smoky flavour.

•       Griddles / flat plates — solid or near-solid cast iron or porcelain-enamelled surfaces, ideal for fish, vegetables, pancakes, or anything that would otherwise fall through a mesh grid.

•       Folding grids — hinged, book-style grids that close around the food (useful for turning delicate items like fish or braaibroodjies in one motion) and fold flat for storage.

•       Extendable grids — grids with a telescoping or sliding frame that adjusts to fit different braai opening sizes, solving the classic “my built-in braai grid broke and nothing off-the-shelf fits” problem.

•       Chrome-plated grids — steel grids with a chrome finish, offering good corrosion resistance and easy cleaning at a lower price point than stainless steel, commonly used on branded built-in units like Megamaster braais.

•       Wall-mounted or floating grids — designed to sit or hang in built-in braai and fireplace openings, often adjustable in height.

•       Camping and portable grids — smaller, lightweight, foldable grids designed to pack into a camping box or ammo tin.

Fixed grid or folding grid — which is better?

Neither is universally “better”; it depends on how and where you braai.

A fixed grid is typically sturdier, sits flatter and more stable over the coals, and is the natural choice for a built-in braai or a braai that lives permanently on a stand or patio. There's no hinge to work loose over time, and a solid single-piece frame handles heavier cuts of meat — a full spatchcocked chicken or a large fish — without flexing.

A folding grid earns its keep on delicate or awkward foods. Because it closes around whatever you're cooking, you can flip a whole snoek, a rack of boerewors, or four braaibroodjies in a single motion instead of wrestling with tongs. It's also the obvious pick if storage space or portability matters — a folding grid packs flat into a camping box, caravan cupboard, or the back of a bakkie, where a rigid mesh grid won't.

If you braai mostly at home on a fixed setup, prioritise a solid fixed grid. If you camp, travel, or cook a lot of food that benefits from a “clamp and flip” motion, a folding grid earns its place alongside your fixed one.

What is an extendable grid?

An extendable (or “extend-a-grid”) design uses a telescoping frame — the mesh section slides within an outer frame — so a single grid can adjust across a range of lengths rather than fitting only one exact measurement. It's specifically aimed at the most common braai-grid headache in South Africa: built-in braais and fireplaces from different manufacturers (and different eras) that don't share a standard opening size.

Rather than having a grid custom-cut, an extendable grid lets you dial in the fit yourself. OnlineBraaiShop's own Extendable Flat Braai Grid, for instance, ships in three base sizes (600mm x 470mm, 725mm x 470mm, and 925mm x 470mm) each of which extends further to cover a wider opening — useful if you're not entirely sure of your braai's exact internal dimensions, or if you've inherited a built-in braai without documentation.

Caring for and cleaning your braai grid

Cast iron

•       Season a new (or freshly stripped) grid by rubbing it lightly with cooking oil and heating it until it just starts to smoke, then let it cool. This builds the non-stick, rust-resistant patina cast iron depends on.

•       Clean while still warm with a stiff brush or scraper — avoid soap where possible, as it can strip the seasoning.

•       Dry it completely and immediately; cast iron left wet is cast iron on its way to rusting.

•       Rub on a thin layer of oil after every clean, especially before storing it away for any length of time.

•       If rust does appear, scrub it back with steel wool, re-season, and carry on — it's rarely fatal to the grid.

Stainless steel and chrome-plated grids

•       Let the grid burn off residue over the coals for a few minutes after cooking — carbonised food scrapes off far more easily than fresh.

•       Use a grid brush, a scraper, or a dedicated cleaner (a coiled cleaning tool like the Grid Buddy makes light work of stuck-on grease and is a handy R249 accessory to keep with your braai tools) while the grid is still warm.

•       Rinse and dry to avoid water spotting; stainless steel doesn't rust from the material itself, but mineral deposits can still leave marks.

•       A once-off soak in warm water with a splash of vinegar or degreaser handles heavier, months-old buildup.

•       Avoid steel wool on polished or electro-polished finishes, as it can scratch the surface — a nylon brush is safer.

General habits that extend any grid's life

•       Oil the grid lightly before cooking, not just after, to reduce sticking regardless of material.

•       Store grids somewhere dry — a garage or braai cover keeps coastal moisture and rain off between uses.

•       Give folding and extendable grids an occasional check of hinges and sliding rails, and a light oil on moving parts stops them seizing up.

A few OnlineBraaiShop picks to consider

•       Extendable Flat Braai Grid (Stainless Steel) — R899. 304-grade stainless steel, 8mm frame with 3mm mesh, 25mm x 25mm aperture, electro-polished finish, three adjustable size ranges from 600mm x 470mm up to 925mm x 470mm (extending further still). A strong first choice if you're not certain of your built-in braai's exact opening size, or if your original grid has warped or rusted out. Backed by a 60-month warranty.

•       Megamaster Chrome Plated Grid — R839. Available in 725mm x 400mm or 970mm x 400mm, built for Megamaster built-in braais specifically. A good low-maintenance option if your braai already carries the Megamaster brand and you want a like-for-like replacement.

•       Large Stainless Steel Folding Grid — R799. 430mm x 330mm, 25mm x 25mm mesh, slide-in handles, dishwasher safe, 304-grade electro-polished stainless steel, made in Knysna. Popularly used as a “braai-broodjie grid” (fits four slices at once) but also large enough for a full spatchcocked chicken.

•       Weber Cast Iron Griddles (Q-series) — from R1,149 to R3,249. Sized specifically for Weber's gas Q braais (half and full griddles across the Q1000/Q1200, Q2000-series and Q3200 ranges), these are the accessory to reach for if you want the option of a hard sear or a solid griddle surface on a gas unit without replacing the whole braai.

Prices and stock levels are correct at the time of writing and may change — check onlinebraaishop.co.za for current pricing and availability.

Practical hints worth remembering

•       Buy a spare grid before you need one. A grid is far cheaper and faster to replace than an entire braai, and rust or warping tends to show up right before a big gathering, not before a quiet Tuesday.

•       Match material to location. Coastal properties should lean stainless steel or chrome over cast iron — salt air accelerates rust faster than seasoning can keep up with in a lot of cases.

•       Keep two grids in rotation if you braai often. One mesh grid for chops, wors, and steak; one folding or flat griddle for fish, vegetables, and breakfast. It saves a lot of mid-braai grid-swapping and scrubbing.

•       Don't judge a grid purely on thickness alone. A thicker round bar (8mm frame, 3mm mesh is a solid benchmark) resists warping under repeated high heat far better than thin, lightweight bars, even within the same material.

•       New grid, low heat first. Whether cast iron or stainless, run a new grid through one lower-heat braai before pushing it to full heat, especially if it's been freshly seasoned or has a factory coating to burn off.

•       Check compatibility before ordering a “universal” grid. Even extendable and universal-fit grids have limits — always measure your braai opening first rather than assuming a fit.

The bottom line

There's no single “best” braai grid — only the best grid for your braai, your cooking style, and how much maintenance you're honestly willing to do. Cast iron rewards braai purists chasing the deepest sear and willing to season and dry it properly. Stainless steel and chrome suit anyone who wants consistent, low-maintenance performance, especially on gas braais or near the coast. Folding grids earn their keep with delicate food and tight storage; fixed grids win on stability and heavy-duty cooking; extendable grids solve the age-old problem of a built-in braai that doesn't quite match anything on the shelf. Get the fit and material right, look after it properly, and a good grid will outlast several braais.