Concrete is porous and can easily absorb spills, oils, and other substances that can cause unsightly stains. Sealing creates a barrier that prevents these substances from penetrating the surface, making it easier to clean and maintain.
Sealing helps protect your concrete from moisture infiltration, which can lead to cracking and spalling. It also protects against freeze-thaw cycles... https://samspressurewashing.com.au//concrete-sealing-sydney.php