The short version
Epoxy is a resinous coating applied on top of your slab. Polished concrete refines the slab itself. Epoxy wins on chemical resistance and color; polished concrete wins on lifetime cost and the fact that there is no coating to wear through. The right answer depends on what your floor actually has to survive.
When epoxy is the better choice
If your floor sees aggressive chemicals, oils, or frequent spills, epoxy's seamless, non-porous surface is hard to beat. It is also the system of choice when you need a specific color, safety striping, or an ESD-dissipative floor for electronics and data-center environments. High-build epoxy handles heavy forklift traffic and impact, and decorative flake or quartz broadcasts add slip resistance and hide wear.
When polished concrete makes more sense
For warehouses, retail, and showroom floors where the main demands are traffic and light reflectance, polished concrete delivers the lowest lifetime cost of any system. There is no coating to delaminate, recoat, or replace. Densification hardens the surface and cuts dusting, and the high light reflectance can reduce lighting costs across a large facility.
The deciding questions
Ask what chemicals contact the floor, how much downtime you can afford for installation, whether you need a specific color or static control, and what your maintenance program looks like. A short on-site evaluation, including moisture testing, usually makes the answer obvious. We are happy to walk your facility and give you a straight recommendation rather than selling you the most expensive option.