How does impregnating sealer works?
Impregnators are a mixture of silicon, resins, and usually a mineral spirit, which is a solvent. That is why they have a strong odor. The mineral spirit is added to the mixture because it acts as a carrier for the silicones and resins. The mineral spirit rides the resin and silicone into the stone as a liquid form. The mineral spirit evaporates out of the stone and leaves the silicone resin. The silicone and resin then begin to cure into a solid form, thus forming a fluid repellent membrane in the pores of the stone. This all happens within five to 10 minutes. However, complete curing time is usually 12 hours due to moisture content in natural stone.
