Invisible protection. I test granite and slate tile with the Surface Guard Maximum Strength grout sealant. It is invisible and leaves almost no changes to the stone’s appearance. On a granite kitchen counter top it made no difference but may have helped the grout. On slate I could detect a slight darkening. I was disappointed it did not enhance or bring out the natural colors like an application of acrylic sealer. This seems to be more valuable as non-staining grout seal and protector.
Instructions: Apply liberally with a damp sponge. Wipe off any excess after 5 minutes.
Post time: Jun-28-2017