Sandstone is a very porous material and requires a high-quality penetrating sealer to keep it from staining or from being damaged by water or bad weather. Penetrating sealers seep into the patio tiles and seal them from the inside out. The same sealer that you use on the patio tiles can be used to seal the grout. Sealing both the sandstone patio tiles and the grout simultaneously will save you time and a lot of effort. However, you should apply one coat of sealer to the sandstone patio tiles before installing them.
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Things you need
- Penetrating grout and tile sealer
- Spray bottle or sponge
Apply one coat of high-quality penetrating grout and tile sealer to the sandstone patio tiles before installing them. This will make the grouting process easier and will prevent the dyes in the grout from seeping into the sandstone tiles.
Allow the grout to dry and cure for at least 72 hours before applying the sealer to the patio tiles. If the grout has not had enough time to cure, the sealer will not penetrate into the grout and dry correctly.
Apply penetrating grout and tile sealer by either spraying it directly onto the tile or spread it with a sponge (either a grout sponge or a small kitchen sponge will do the trick).
Allow the sealer to dry for two to three hours between coats. Apply two to four total coats of sealer to the sandstone patio pavers.
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