Clean the polyurea surface thoroughly. If it’s been set for more than a few hours, lightly wiping with a solvent such as denatured alcohol can refresh the surface for the next coat to stick well.

Aliphatic polyurea resists color fading and can be applied in several ways, including rolling on surfaces, while aromatic polyurea usually needs a high-pressure spray technique and may not hold color as well under sunlight.

For preparing concrete, follow ASTM standards like D4258 for cleaning and D4260 for etching to ensure the surface is ready for a coating.

Polyurea is eco-friendly due to its solvent-free composition, lack of harmful emissions during curing, and the safe, non-toxic nature of the cured material.

Depending on the project size, high-pressure hot spray for large-scale, warm spray for moderate, and low-pressure cold spray or even hand application for small repair jobs are effective.