For hangar floors, Griot’s two-part epoxy held up best.

To raise your standing around the airport, there’s nothing quite like a shiny gray hangar floor, just like where the jets live. A year ago, we set out to have one of those for our own hangar, so we tested three types of epoxy floor paint. To reprise, we painted our not-so-pristine floor with three types of paints; two were standard two-part epoxies and one was a single-part product billed as a concrete sealer and dye.

A year later, the runaway best performer was the two-part epoxy from Griot’s Garage. Although miserable to apply due to its thick, honey-like consistency, this paint looks as shiny and perfect as the day it…