Interface cut carpet into tiles to replace only worn squares

Commercial carpet was sold and installed as broadloom — wall-to-wall rolls. Wear, though, is wildly uneven: doorways, corridors and chair zones are threadbare while most of the floor stays near-new. But because a roll is one continuous piece, replacing the worn 10-20% means ripping out and landfilling the whole installation, an enormous recurring cost and waste that the industry treated as simply how flooring worked.

Ray Anderson founded Interface in 1973 to make carpet in tiles instead — modular squares, roughly half a metre, laid individually. The move looks like a manufacturing detail; it is actually a redefinition of the unit of replacement, and (decades before it was fashionable) the foundation of a radically less wasteful product.

Interface's carpet tile turns the floor from one indivisible object into a grid of independent units, so a facility manager lifts and swaps only the tiles that are actually worn — the walkway squares — while the rest stays down. Replacement cost and waste drop to a fraction of recarpeting, downtime shrinks to a corner instead of a whole floor, and inventory of matching tiles lets repairs happen continuously. Anderson later pushed the logic toward closed-loop recycling (the ReEntry take-back program reclaiming old tiles) and even tried to sell flooring as a leased service rather than a product.

Cut carpet into tiles so the replacement unit matches the wear pattern: lift and swap only worn squares, cutting waste and cost to a fraction of recarpeting.

Tiles let customers replace only the worn 15%, cutting cost and waste.

Modularity enables continuous spot-repair and take-back recycling.

Lower lifetime cost locks in repeat tile purchases from the same supplier.

The environmental benefit became a cost benefit, so it stuck commercially.

When a product wears unevenly, redesign the unit of replacement to match the unit of wear, so customers renew only what's spent.

Carpet tiles let customers replace only worn squares instead of whole floors; Interface became the global carpet-tile leader and reclaimed hundreds of millions of pounds of carpet via take-back. Carpet tile became the default for offices and institutions; the 'replace the worn module, not the whole' logic is now standard, and Anderson's Mission Zero made Interface a reference case in corporate sustainability.