The primary difference is flexibility. Microcement is a cement-based product; it is rigid and can be prone to hairline cracks if a building settles or vibrates. Aero-Elastic Eco is a polyurethane-based resin with high tensile strength. It is “crack-bridging,” meaning it can stretch and move with the building. Additionally, while microcement is hard and cold like stone, our system is ergonomic and warm to the touch.