Concrete looks severe. Speech in it smears.

Einrichtungsfachhandel in Frankfurt is good at one photograph: exposed concrete, blackened steel, a single bench, no product in frame. The picture travels. The room stays behind, and the room is where someone has to say a price without the next cabin hearing the number. A treatment box in raw concrete, glass and a sealed floor is a reverberant volume. The consultation carries. The practitioner hears her own sentence twice, which is a strange way to spend a wage. Brutalism in a clinic is a materials decision with three sums that belong in the specification before anyone opens a moodboard: absorption area, hygiene zones, light colour. A rug and a playlist after handover mean paying for the fit-out twice, once for the photograph and once for the apology.

Display marketing sells surfaces. The business needs faces that wipe clean, speech that stays intelligible, and a lamp under which skin is neither grey nor orange. That is fit-out. A style quote can come along if it survives the wipe.

Reverberation before the render

Speech in a clinic is short-range. Price, contraindication, the question about medication, said at a distance of a chair. In German planning practice DIN 18041, group B, is the language for rooms where people talk across a short distance. The figure to design is equivalent absorption area, taken from the volume. Exposed concrete, float glass and a hard floor have very small absorption coefficients. Reverberation time rises, syllables smear, and the next room catches fragments that were never meant to leave the cabin. Privacy, in this material, is an acoustic specification. It is not a lowered voice.

Absorbers go into the drawing, not into the corner the photographer needs empty. Mineral wool with a fleece behind perforated metal or timber, specified as washable. Acoustic plaster only when the data sheet survives disinfectant and moisture. Most decorative acoustic plasters do not, which is why they look so calm in the sample book and so tired beside a basin. Ceiling baffles stay out of the splash line. A curtain that unhooks and washes is a real component if the fabric area is large enough to matter. A length of moodboard linen on a rod is a costume.

Test it before opening. A simple reverberation check empty and furnished, then a speech test: can a colleague at the door follow the prices being said inside? If yes, the room lacks area or the door lacks a seal. Both are cheaper before the screed than after. Clinics that call an acoustician when a review says the room is loud are renovating against finished concrete. Concrete remembers the decision. It does not negotiate with a rug bought in a panic.

Concrete finishes in one exposure. A consultation needs absorption area, or the next cabin listens in.

Hygiene zones on a finish that wants to stay raw

Exposed concrete is porous. In circulation, sealed and outside the splash, it can stay, and it can look as severe as the drawing promised. At the basin, around the bed, on the worktop that sees product and disinfectant, the pore is a dirt store. Wipe disinfection assumes a closed, resistant surface. Pulling the raw core all the way to the bed makes the surface-hygiene protocol impossible, however expensive the formwork was and however many people complimented the shuttering marks.

Zones belong on the plan in ink, not in a later conversation with the cleaner. Wet and treatment areas: few joints, a surface that tolerates disinfectant, coved skirtings, no open shadow gap where residue sits and perfumes the gap between appointments. Steel there in a grade that survives moisture and chemistry. Powder coat that chips is a maintenance bill wearing a black finish. Blackened steel that rusts in the lounge is a line the render never priced, and rust has a smell the playlist will not cover. The photo corner guests touch needs the same wipe-down as the counter. Fingers and foundation sit on every edge the drawing called sculptural. Sculpture, in a clinic, has to survive foundation.

Joints, floor drains and the underside of basins decide whether the room still smells of concrete after six months or of water that never left. That gap is the minutes between two appointments in which a surface actually becomes free. If the minutes are not enough, the drawing was romantic.

Light that can judge a face

Grey concrete eats light and pushes skin toward cold. Warm decorative light, correct in the lounge and then copied into the cabin, pushes the same complexion toward orange. Skin is judged at high colour rendering. Ra 90 is the floor a buyer should write down, and the red value R9 belongs on the sheet, because erythema and vessels sit in that part of the spectrum. In the cabin, 3500 to 4000 kelvin is closer to a sober reading than a 2700-kelvin scene that makes the shop floor flattering at night. Dim the second circuit. Keep a coloured accent out of the room while the skin is being read. Amber bulbs are for the corridor. They are a liar in the cabin.

Two circuits, not one track with one mood. Circuit one: assessment, bright, neutral, no specular streak across the bed. Circuit two: transition and retail, warmer, dimmed, after the decision on a peel, a shade or a stop. One dimmer for both means the record of a face changes between morning and afternoon. Before-images from that room are not a course of treatment. They are a lighting plot with a client in it.

At Einrichtungsfachhandel the luminaires sit halls away from the acoustic panels. The error starts when interior design, the electrician and the person who looks at skin hold three separate schedules. A sample bay with the real lamp, the real concrete and a person under daylight and under the fitting costs a morning. The wrong lamp batch costs every consultation after it, quietly, in shades of grey the camera on a phone will “correct” and the eye should not.

What to lock before anyone falls in love with the bench

Brutalism holds when the hard surfaces sit where nobody has to whisper and nobody has to disinfect: the facade, a counter face outside the splash, one photographable cut in the corridor. The cabin is specified quieter and tighter without turning into a hotel that apologises in beige. Perforated metal in front of an absorber can be as strict as board-marked concrete. It has to be drawn, with the absorption area to DIN 18041, group B, named before the finish is chosen.

The wet zone and the bed surround stay closed, wipeable, coved. Steel grade and sealer go in writing, not as a sample photo that cannot be wiped. The two lighting circuits carry Ra 90, with R9 named, and 3500 to 4000 kelvin for assessment. A speech test between cabin and corridor happens before handover, with a real sentence about price, not a hum. The photo corner gets the same wipe-down as the counter, because guests will touch it, and foundation is a material whether the architect invited it or not.

Einrichtungsfachhandel 2027 will show the bench and the concrete look again. What travels home is a line in the specification. A clinic that prices reverberation, hygiene zone and colour temperature before the moodboard can build raw, and the raw will still look severe in the photograph. One that leaves the three points to the photographer opens a loud room that is hard to clean, and advises skin under a lamp that has already chosen the colour of the face.