Shadow and light: The secret of japanese latticework

It is no accident that tea masters, five centuries ago, adopted these openwork partitions. In a country where earthquakes constantly remind people of the fragility of constructions, where houses of wood and paper must withstand the humidity of stifling summers and the icy winds of winter, the Japanese lattice is far more than a simple decorative element. It is a philosophy made material. A way of thinking about space as flow, rather than a succession of closed boxes. A poetic answer to the question: how to live together without suffocating?

01When wood becomes lace

You must imagine the work of the miyadaiku, the temple carpenter who, since the Heian period, has sculpted wood as others write poetry. No nails, no glue. Just notches so precise they fit together with the softness of a breath. Kumiko, this woodworking technique where hundreds of hinoki or cedar slats assemble into complex patterns, is a craft of art—and of patience.

Take the asanoha motif, those stylized hemp leaves that adorn the kimonos of newborns to wish them strength and health. To create it, the artisan must cut each piece at a 60-degree angle, with a margin of error smaller than a millimeter. One mistake, and the pattern collapses like a house of cards. Yet when you observe an old panel, all you see is the perfection of the result: a lace of wood where light slips through like a forest at dawn.

What fascinates is this alliance between mathematical rigor and artistic freedom. Each pattern tells a story. The sayagata, that Buddhist swastika symbolizing eternity, was once reserved for temples and the residences of daimyos. The kikkō, inspired by the turtle’s shell, protected houses from fires—a superstition that was hardly trivial in a country where wooden cities burned like matchsticks. Even today, some artisans refuse to work with the shihō (four directions) motif, as the number four, associated with death, brings bad luck.

02Light as raw material

If the lattice captivates so much, it is because it does not merely divide space: it sculpts it. In a culture where natural light is a rare commodity—summers are stifling, winters dark—knowing how to tame it is an art.

Observe a shoji at dusk. The washi, this paper made from mulberry bark, diffuses light like living skin. The slightly irregular fibers create shadow plays that change with the hour and the season. In the early morning, the light is soft, almost milky. At noon, it becomes harsh, striated by the kumiko patterns. In the evening, when the andon lanterns light up, the paper blazes like a Japanese lantern.

This mastery of light is not just aesthetic. It is deeply practical. In machiya, those narrow townhouses where several generations lived under the same roof, lattices allowed intimacy to be modulated without sacrificing brightness. A room could serve as a living room by day and a bedroom by night, simply by moving a fusuma or closing a shoji. Merchants of the Edo period even used these partitions to spy on their clients—a discreet hole in the paper, and a screen became a surveillance tool.

Today, modern architects draw inspiration from this spatial intelligence. Tadao Ando, in his Church of the Light in Osaka, reproduced the effect of shoji by piercing a concrete wall with a giant cross. The light that emanates is not that of a conventional window: it is filtered, almost sacred. As if the lattice, across the centuries, had retained its power to transform the ordinary into the extraordinary.

03The art of disappearing

There is something profoundly Japanese in this way of conceiving separations. The lattice does not hide; it suggests. It does not block; it guides the gaze. In a culture where the implicit often takes precedence over the explicit, where one says "it is raining" to mean "I do not want to go out," these openwork partitions are a perfect metaphor for communication.

Take the ranma, those openwork panels that top doors in traditional houses. Their primary function is utilitarian: to ventilate rooms, let in light. But their true genius lies in what they do not show. A ranma shaped like waves (seigaiha) evokes the ocean without representing it. A bamboo motif recalls nature without a single blade of grass being visible. Like in a haiku, the essential is in what is left unsaid.

This philosophy of ellipsis has crossed the ages. In the 1950s, as Japan rebuilt after the war, lattices became a symbol of resilience. Families used salvaged wood to make makeshift shoji, proving that beauty could arise from scarcity. Today, in our interiors saturated with objects, these lightweight partitions offer an alternative to accumulation. They remind us that a space can be both intimate and open, personal and shared.

04The whisper of materials

If the lattice fascinates, it is also because it is an ode to raw materials. Hinoki, that Japanese cypress with a lemony scent, is chosen for its lightness and resistance. Washi, made using thousand-year-old methods, is both strong and fragile—like life itself.

There is something almost sacred in the way these materials are worked. The wood is dried for years, sometimes decades, before being carved. The washi is hand-beaten, its fibers intertwined like the threads of a fate. When you touch an old shoji, you feel beneath your fingers the traces of the generations that brushed against it before you. These partitions are not mere objects: they are tactile memories.

This almost carnal relationship with materials explains why lattices resist standardization. Even today, while CNC machines can reproduce the most complex patterns in minutes, the best artisans continue to work by hand. "A machine can cut straight, but it cannot feel the wood," explains a kumiko master from Kyoto. "Wood lives, it breathes. You have to listen to it."

This attention to detail is found in the smallest particulars. Some shoji are lined with a thicker layer of paper at the bottom to resist wear, and thinner at the top to let in light. Others incorporate different patterns depending on the viewing angle—a visual game that rewards those who take the time to look.

05When the West discovers emptiness

The history of Japanese lattices in the West is one of a misunderstanding that turned into fascination. When the first European travelers encountered these lightweight partitions in the 19th century, they saw proof of Japanese "fragility." "Houses of paper!" they exclaimed, unaware that these structures had withstood centuries of typhoons and earthquakes.

It took until the early 20th century for the West to understand the lesson of the lattices. Frank Lloyd Wright, after a trip to Japan in 1905, incorporated kumiko patterns into his Prairie houses. "Emptiness is a force," he wrote. "We must learn to build with absence." His windows with geometric patterns, his openwork partitions, were a direct homage to the Japanese art of separating without enclosing.

Today, the lattice is everywhere—and often stripped of its meaning. You find plastic imitations at IKEA, fiberglass shoji in New York lofts. Yet the best designers continue to draw from its essence. Studio Nendo, for example, has created a furniture collection where kumiko becomes a three-dimensional structure, playing with transparency and opacity. At Muji, bamboo lattices remind us that minimalism is not a trend, but a philosophy.

This Western appropriation raises a delicate question: can one draw inspiration from a tradition without betraying it? Some Japanese artisans view these adaptations with suspicion. Others, like designer Tokujin Yoshioka, see them as a natural evolution. "The lattice belongs to no one," he says. "It is an idea, not an object. And ideas travel."

06The lattice in the digital age

In a world where our lives are increasingly virtual, where our workspaces shrink to screens, the Japanese lattice offers a physical response to the abstraction of the digital. It reminds us that space is not just a matter of square meters, but of sensations.

Take smart shoji, those partitions equipped with LEDs that light up according to natural light. Or kumiko in acrylic, playing with transparency like a computer screen. These innovations are not betrayals, but reinterpretations. They prove that the lattice is not an object frozen in the past, but an architectural language that continues to evolve.

Even in open-plan offices, where privacy is a rare commodity, openwork partitions are reappearing. Not to enclose, but to create micro-spaces where one can concentrate without feeling isolated. As if, after decades of standardized spaces, we were rediscovering the need for porous boundaries.

This resurgence is no accident. In an era marked by anxiety and overstimulation, the lattice offers a form of comfort. It reminds us that boundaries are not always walls. Sometimes, they are filters, membranes, interfaces between the world and us.

07The legacy of a shadow

A few years ago, a Japanese archaeologist made a surprising discovery in the ruins of a 17th-century castle. Beneath the rubble, he found perfectly preserved fragments of kumiko. The patterns were still visible, as if time had stopped. Upon closer examination, he noticed something strange: some panels bore ink inscriptions, almost erased. Poems, prayers, names.

These lattices were not mere objects. They were diaries, talismans, silent confessions. They reminded us that in a culture where emotions are taught to be silenced, walls can become confidants.

Today, as our interiors grow increasingly standardized, as our homes come to resemble decorating catalogs, the Japanese lattice invites us to inhabit differently. To relearn the value of emptiness. To understand that beauty often lies in what is not said, in what is not shown.

Perhaps that is why, despite the centuries and fashions, these lightweight partitions continue to fascinate us. Because they are not just objects. They are life lessons, carved into wood and paper. Lessons on how to live together without suffocating. To let in light without burning. To create boundaries that do not separate, but connect.