Sealer for stone backing prior to installation for:

• Prevent Staining in natural stone installations absorbed by contaminants from the substrate
• Prevent Staining in natural stone installations that are absorbent by contaminants. Diminish staining by moisture from cementitious adhesive during installation....
• Prevent the capillary exit of contaminants from the substrate towards the surface of the material (efflorescence, saltpeter, ferrous substances)

  Product with layer generation does not affect the adhesion of cementitious adhesives.