Polyurethane vs polyaspartic: choosing a top coat
Both polyurethane and polyaspartic are aliphatic (UV-stable) top coats that go over an epoxy body. The difference is cure speed and where each performs best.
Polyaspartic: fast and outdoor-ready
Polyaspartic cures in about an hour, has the edge on UV stability and hot-tire resistance, and applies in a wide temperature range. It's the go-to for garages, driveways, patios and anything that needs to be back in service fast.
Polyurethane: flexible and easy-clean
Aliphatic polyurethane is flexible, chemical-resistant and wipes clean, which makes it an excellent easy-maintenance seal for commercial interiors. It's thinner and cures slower, so it's less suited to same-day or outdoor work.
How we choose
We match the top coat to the space: polyaspartic for speed, sun and vehicles; polyurethane for chemical-heavy, easy-clean interiors. Both dramatically outlast bare epoxy in the sun.