Dr. Fred's Biocide Sealer Additive

This miracle in a bottle, when added to sealer, effectively prevents mold, mildew and algae growth on stone and grout. It is safe for the environment, has no odor and co…

“Over the past 35 years I have restored thousands of showers. Many of these showers have had major mold and mildew issues, which of course customers hate. The sealers and impregnators currently available are excellent at repelling water. However, they lack the biocide needed to hamper biological growth. Working with chemists, I developed this biocide additive that can be added to both water and solvent based sealers that will add the protection needed to impede mold and mildew.”

It’s simple to use: Add one full bottle to every gallon of sealer.