Did You Know? Some Old Taiwanese Floors Have the House’s Birth Year Built In

Walk into an older Taiwanese house, school or temple and look down. Chances are you’re standing on 磨石子 (mó shízi), terrazzo: a speckled floor of cement and tiny stone chips, ground until it shines. Generations of kids napped on it in summer without ever noticing it. But look a little closer and some of these floors are hiding a date, a family crest, or even a bicycle.

A stone floor that isn’t really stone

Terrazzo starts with a smoothed base. Workers set out thin copper strips to mark the design, fill each section with a mix of cement and small stone chips, and let it cure. Then the real work begins: heavy grinding machines go over the surface, coarse first and then fine, until the chips show through as a polished pattern. It gives you the look of real stone for a fraction of the price.

The technique arrived in Taiwan during the Japanese era. At first it was mostly used in public buildings, schools and temples. By the 1950s and 60s it was everywhere, from the shaded arcades (騎樓) along the street to the floors of ordinary family homes.

Those shiny lines have a job

The metal lines aren’t just decoration. They separate the colors in a design, and they also stop cracks from spreading. If the floor cracks, the crack runs only as far as the nearest strip instead of splitting the whole room. That practical detail turned into an art form called 銅線磨石子 (copper-line terrazzo).

The designs ranged from simple geometry to lucky cranes and butterflies. Shops sometimes had their trade set into the floor, with bicycles, groceries or fruit. Some families added the year the house was finished, and a few added the year they rebuilt after earthquake damage. The grandest pieces are in temples, where some designs took years to finish and the craftsmen lived on site while they worked.

Why grandma loved it (and builders stopped using it)

Ask anyone who grew up with terrazzo and they’ll tell you the same things. It stays cool underfoot in summer. It doesn’t turn clammy when the humid south wind blows. When it gets dull, a fresh grind makes it look new again.

The trouble was time. In a 2018 interview, a stone supplier in Kaohsiung explained that a terrazzo floor takes about 10 days to lay, while the same area of ceramic tile takes about 3. The grinding machines are heavy, loud and messy, which doesn’t suit modern apartment blocks. Tiles took over (the same material that ended up wrapping so many Taiwanese buildings in bathroom tiles), and in 2018 Taiwan’s public broadcaster reported that the youngest terrazzo masters still working were already over 60.

People haven’t forgotten it, though. When the Dihua 207 Museum opened on Dihua Street in 2017, its first exhibition collected 185 terrazzo designs from temples, churches, schools and homes across Taiwan. Visitors kept stopping to run their hands over the floors, and a few homeowners have since hired craftsmen to bring terrazzo back into their own entryways.

Quick takeaway: Next time you’re in an old Taiwanese building, check the entryway floor. Between the copper lines, you might find the year the house was born. Then look up at the iron flower windows, which come from the same era of hand-made everyday beauty.

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