Bar counter and worktop substrate

Carries every machine, every spill and every hand on the bar, and sets the height the whole shift is worked at.

A worktop is three things stacked, and operators only ever look at one of them. There is a structural deck that carries load, a wear surface that meets water and chemistry, and a set of JOINTS — and the joints are where every worktop actually fails. A continuous surface sheds water; a butt joint between two lengths, a cut-out for a sink or a tap, a screw penetration from underneath and the line where the top meets the wall all draw water in by capillary action and hold it against a substrate that was never meant to be wet. That is why a coved upstand and a sealed, radiused cut-out are worth more than the material choice above them. The second mechanism is chemistry, and a bar is chemically hostile in both directions at once: citrus and descaler are acidic, detergents and sanitisers are alkaline, and some surfaces etch under one and are indifferent to the other. The third is heat — boiler feet, a knocked portafilter, a jug of just-boiled water set down without thinking — and thermal shock cracks a hard brittle surface at exactly the point where it is thinnest, which is the edge of a cut-out. The last mechanism is the one nobody costs: FINISH DECIDES VERIFIABILITY. A textured or heavily patterned surface hides daily marking, which is why it is specified, and it hides soil from the person checking the bar for exactly the same reason. A surface you cannot read is a surface nobody can sign off. Height sits underneath all of it — the deck sets the plane at which every task is performed, and a plane set from a catalogue rather than from the people who will stand at it loads wrists and backs for the life of the fit-out.

• Set the working height from the people, not from the drawing. Stand the tallest and the shortest members of the team at a mock-up at working posture — a portafilter locked in, a jug under the wand, a card machine reached across — and choose from what you see. This is the single decision on the whole fit-out that cannot be corrected without demolition, and it is the one most often taken from a default.
• Specify the JOINTS before the material. Where does one length meet the next, where does the top meet the wall, what radius do the cut-outs have, and how is each penetration sealed and by whom. A worktop is chosen on appearance and fails at its seams, so a specification that names the material and not the joints has specified the wrong half.
• Read the whole chemistry of your own menu, in both directions. A citrus programme, a descaling routine and an alkaline sanitiser are all normal on a bar and they attack surfaces differently. Take the actual products the site will use and test them on an offcut, left for the contact time the label requires, before the slab is ordered.
• Decide where heat lands and protect that spot specifically. Boiler and brewer feet, the pour-down point beside the wand, the space where a hot jug is set while a hand is free — these are known positions, not accidents, and a protective plate or a change of material at those positions costs less than a cracked cut-out.
• Choose a finish you can VERIFY, not one that hides wear. Every argument for a busy textured surface is an argument that soil will also be invisible, and a supervisor cannot sign off what cannot be read. If a mark-hiding finish is chosen for front-of-house appearance, keep the working zone in something legible.
• Cost the upstand and the sealed wall junction as part of the top, because they are the parts that keep the wall dry and they are the first things value-engineered out of a quotation. A gap at the back of a bar takes in water for years before anybody sees why the wall is failing.
• Confirm that the deck and the cabinetry beneath it can carry the point loads of the machines that are actually going on it, with the supplier's installed weights in hand, before the carcass is built. A machine that arrives heavier than the joinery assumed is a structural problem discovered on the day of delivery.
• Bring the joiner, the plumber and the electrician to one drawing before fabrication, because every service that crosses the deck is a hole in it. Holes cut on site into a finished top are the ones that are unsealed, off-position, or both.