Is there an advantage to using a solvent (oil) based sealer verses a water based sealer?
Yes. When cleaning and re-sealing Marble, Granite, Travertine or any other Natural stone and grout periodically as recommended, with the water based sealer not only is it more environmentally friendly also the surface can air dry a few hours prior to sealing and does not need to be 100% dry which in turn will save time. When using a solvent base sealer the surface needs to be completely dry, overnight is recommended. Excess moisture present during application will cause a reaction and may create a milky affect on the surface which will result in having to strip and re-seal the surface.