Many companies use sodium hypochlorite because it delivers immediate visual results and brightens roof surfaces.

While sodium hypochlorite certainly has its place within exterior cleaning, its cleaning action is relatively short-lived.

We often prefer professional DDAC biocide treatments because they continue working long after application.

When rainwater activates the treatment, it continues targeting algae, moss spores and biological growth that may remain on the roof surface.

This helps keep the roof cleaner for longer and reduces the speed at which regrowth occurs.