Cemented

Cementing is the construction that made modern footwear possible. Once adhesives strong enough to bond a sole to an upper became reliable in the middle of the twentieth century, a shoe no longer had to be assembled by a stitcher at a machine, and the industry’s output multiplied. Nearly every trainer in the world is cemented, along with most summer shoes, most fashion footwear and a good deal of luxury product that has no wish to advertise the fact.

What the Method Buys

The advantages are real and frequently misrepresented. Without a welt or a through-stitch, the sole can be cut flush to the upper, which allows a lighter, more flexible and much slimmer shoe. It permits sole units that cannot be sewn at all — moulded rubber cups, injected polyurethane, foam midsoles — and therefore every category of footwear built for cushioning. Modern polyurethane adhesives are not the weak point that folklore assumes; a properly prepared bond from a good factory will outlast the upper it is holding.

What It Costs

The limitation is at the end of the shoe’s life rather than the beginning. A cemented sole can sometimes be replaced, but the process is closer to reconstruction than repair, and it is rarely economic. Where a welted shoe can be resoled five or six times and acquire a patina worth having, a cemented one is generally worn until it is finished. That is an entirely reasonable proposition for a sneaker and a poor one for a leather dress shoe at a serious price — which is why construction is worth confirming rather than assuming when the price climbs.

The honest position is that cementing is not a lesser method but a different one, chosen for what it makes possible. Being able to say so plainly, rather than reaching for the nearest hierarchy, is a mark of someone who actually knows footwear.