01What “solid plate” actually changes
Most stainless countertops sold in North America and Europe are a thin skin over something else: 1.0–1.6 mm of stainless bonded to plywood, MDF, honeycomb or a solid core. That build is cheap, light and perfectly good for a domestic kitchen — right up to the moment the core gets wet.
A solid plate top is plate all the way through. There is no core to swell, no adhesive line to fail, no hollow sound under a dropped pan, and no factory edge that can be picked at. It also cannot be carried by one person on a staircase, and it costs more per square metre of material. Both facts belong in the quote, so we put them there.
The difference shows up in three places: weight (a 6 mm top is roughly 48 kg/m² against 8–12 kg/m² for a bonded panel), edge detail (the edge is the plate, machined — it cannot be wrapped or capped), and repair (a deep scratch can be ground out and re-grained without destroying a laminate surface).
If the top has to survive a hot pan set down without warning, a knife slipped off a board, or a hygiene inspection with a torch, plate is the cheaper answer over ten years. If it is a show kitchen with light use, a bonded panel is not a mistake.
02What a finished deck looks like
Three frames from our own showroom stand, because the words above are easier to check against the object. The first is the run seen along its length, the second is a twin-bowl deck, the third is the bowl-to-deck joint at close range.
What to look at, in order: the front edge, which should be a single straight line from one end of the run to the other; the grain, which should run continuously across the joint rather than change direction where the bowl was let in; and the joint itself, dressed back far enough that you cannot feel it with a fingertip.
One honest note about these three. They are a fabricated deck — sheet formed and welded, with the bowl worked in — which is what most kitchens are actually specified in. If you are ordering solid plate from the table below, the surface reads the same but the edge is a machined plate edge with a visible section, so the countertop looks heavier from the side. Ask for both and compare the edge before deciding.
03Thickness, and what each one is for
We cut four thicknesses. They are not a price ladder — they are four different structural answers.
| mm | inch | Use it for | Notes |
|---|---|---|---|
| 5 mm | 0.197" | Domestic tops with a front edge fold | Lightest plate we cut; needs edge support over 600 mm spans |
| 6 mm | 0.236" | The default for kitchens and prep benches | Best balance of stiffness and handling on site |
| 8 mm | 0.315" | Islands, bars, pass counters, heavy domestic | Handles a sink cut-out without a doubler in most layouts |
| 10 mm | 0.394" | Commercial pass counters, lab benches, brutalist islands | Quoted with lifting and install plan, because two people is not enough |
The number that actually governs how a top feels is not thickness alone, it is the span between supports. A 5 mm top on a 400 mm cabinet run is rock solid. The same plate on a 1200 mm breakfast bar overhangs and will ring when you lean on it. If your layout has a long unsupported span, tell us the span and we will price a folded edge or a stiffener rather than sell you a heavier plate you do not need.
04Countertop, worktop or benchtop — the naming tax
The same object is sold under three words, and which one a buyer uses tells you which market they are quoting for. Nobody charges more for the word, but mismatched terminology between your drawing and your supplier's quote is a reliable source of wrong dimensions.
| Market | Word used | Usual thickness | Height |
|---|---|---|---|
| United States, Canada | countertop | 1.0–1.6 mm sheet, or plate | 36" / 914 mm |
| Australia, New Zealand | benchtop | 1.2–2.0 mm, often 1.5 mm | 900 mm |
| United Kingdom, Ireland | worktop | 1.0–1.5 mm, or 20–40 mm solid-core laminate | 900 mm |
Two practical consequences. First, if your drawing says worktop 900 × 600 and your supplier quotes countertop 36" × 24", one of you is working in the wrong unit — we quote in millimetres and state the inch equivalent next to it. Second, the gauge numbers in an American spec sheet do not describe plate this thick at all; a 16 gauge stainless sheet is 1.588 mm, which is a fifth of our thinnest plate. See the gauge conversion chart before you put both units on one drawing.
05The specification sheet we quote against
| Property | Standard | Available |
|---|---|---|
| Material | 304 (1.4301) | 316L (1.4404) on request |
| Thickness | 5 / 6 / 8 / 10 mm | Other plate on request |
| Sheet size | 2000 × 8000 mm max | Smaller, cut to size |
| Edge | Machined square | Folded front edge, bevelled, radiused |
| Edge tolerance | ±0.05 mm at the edge | — |
| Finish | No.4 brushed | 2B, hairline, mirror on request |
| Flatness | Per EN 10051 / ASTM A480 | Tighter on request |
| Lead time | 15 days | Confirmed per order |
| Minimum | 1 set | — |
Two lines on that table get argued about most, so they are worth stating plainly. Edge tolerance is measured at the machined edge, not cumulatively along an 8000 mm part; a long part moves with temperature at about 17 µm per metre per kelvin, so we state the measuring temperature with the inspection sheet. Flatness is a mill standard, not a machined one — if you need a top flatter than plate arrives, that is a separate operation and it is priced separately.
06Against quartz, sintered stone and granite
We do not sell stone, so treat this as a trade note rather than a comparison chart. It is here because the question arrives with almost every domestic enquiry.
| Question | Stainless plate | Quartz / sintered stone |
|---|---|---|
| Heat | Takes a hot pan directly | Thermal shock can crack resin-bound tops |
| Chips | Dents, does not chip | Edge chips are a common repair |
| Stains | Water marks show on polished finishes | Resists most kitchen stains |
| Hygiene | Non-porous, weldable joints | Non-porous, seams are adhesive |
| Weight | 48 kg/m² at 6 mm | 20–30 kg/m² |
| Look | Industrial, reflective, honest | Stone patterns, warmer under hand |
The honest summary: stone looks like stone and stainless looks like a kitchen that gets used. If the client wants a stone look, sell them stone. If the client wants a top that survives being used, the argument for plate is not aesthetic, it is that there is nothing inside it to fail.
07What to send for a price
A dimensioned drawing is enough. If you do not have one, a hand sketch with overall length, depth, sink position and any cut-outs will get you an indicative number the same day.
- Plan view with overall length and depth, in millimetres.
- Cut-outs — sink, hob, cable glands — with position from a stated datum edge, not from the middle.
- Edge — square, folded, or a profile from the technical data index.
- Finish and alloy, if you already know them.
- Quantity and packing — how many sets, and whether they ship with the cabinets or separately.
Full detail on that handover is on the custom stainless steel countertops page.