The effectiveness of natural stone waterproofing depends on many factors, including the type of natural stone. With particularly absorbent types of stone, such as marble, the effect of impregnation is less than with less absorbent types of stone, such as granite and slate. A complete sealing of the pores causes a sealing of the stone. When treating natural stone, the agent used is matched to the type of stone and worked in. Treatment can be targeted against water, grease and oil. Food-safe products are used for the treatment of kitchen worktops.
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