Ideally, when impregnator is applied to stone, it penetrates into the pores of the stone. However, this isn’t always the case.
Fred Hueston, Chief Technical Director of Surface Care Pros and owner of Stone Forensics explains, “If you apply an impregnator and it beads and stays on top of the stone, this is a problem.” It indicates that the impregnator is not being absorbed into the stone for some reason. Something is blocking the pores.
Hueston suggests, “Check to see if there are any coatings on the surface of the stone.” Coatings are designed to create a barrier. The barrier must be removed for the impregnator to penetrate.
Hueston says, “Use a wax stripper and remove any coatings. Then try reapplying the sealer once the stone is dry.”
There’s another possible reason for the beading, and fortunately, it will not require stripping. Hueston explains, “Check to see if the stone has been sealed before. Perform an absorbency test. If the impregnator beads on the surface of the stone after you have removed any coatings, then the stone may have enough impregnator. If this is the case there should be no need to apply more.”
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Article ID: 737
Created: March 11, 2023
Last Updated: March 11, 2023
Author: Fred Hueston
Online URL: https://sr-manual.com/kb/article/causes-and-solutions-for-impregnator-beading-and-staying-on-top-of-stone-737.html