Epoxy is rigid and bonds strongly to concrete, while polyurea is elastomeric and sets in seconds. Movement, return-to-service time and UV exposure usually decide it.

A system that blends polyurea and polyurethane chemistry in the resin side. Hybrids trade some properties for cost or a longer working time.

Surface preparation, substrate moisture, ambient conditions and applicator skill vary from site to site, and they often matter as much as the product.

Surface prep standard, primer, product, dry film thickness, cure conditions, inspection hold points and repair procedure.

Sometimes. The old coating must be well-bonded and compatible; an adhesion test on site is the safest way to know.

Trained applicators with heated plural-component equipment, since ratio and temperature control are essential.