Can plain concrete be stamped or stencilled later for a pattern?

Genuine stamped concrete needs to be patterned while the slab is still fresh, so it’s not possible to stamp an existing, fully cured plain slab afterward.

A surface-applied stencil overlay or decorative resurfacing product can achieve a similar look on an existing slab, but that’s a different process to true stamped concrete — worth discussing which approach genuinely fits your existing slab’s condition.

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