Sealers for Natural Stone and Grout

To seal is to protect, and porous natural stone and cement-based grout need to be sealed if you want to extend their lifetimes and keep them clean and beautiful.

If I seal my stone and grout, is it 100% protected and stain-proof?

Hand wiping spilled wine off of tile floor

No. A sealer is not a solid, plastic-like barrier that keeps out all elements. Think of sealer as a breathable layer of protection, like wearing a jacket into harsh weather. If you go out in a Seattle downpour without wearing a jacket, you'll get cold and wet very fast. If you wear a good coat, you'll still get wet eventually, but it will take a lot longer for the water to soak through your coat and get to you. Sealers are similar: a layer of protection against outside damage, but not impenetrable.

Sealers provide a good barrier against stains, but if (for example) you let spilled grape juice or vinegar sit on your granite countertops or travertine floors long enough, they will eat through the seal and damage/stain your stone.

Why should I seal my natural stone before grouting?

Cement-based grout has pigments that can sink into the pores of your stone and stain it. Below are several Philadelphia Travertine samples that were grouted before they were sealed. You can clearly see how the grout has tinted the stone and changed its look.

How do I apply (and how often should I re-apply) sealer?

All of our sealers are easy to apply.


Pour a small amount of sealer out into a bowl. Using a sponge or clean cloth, rub the sealer evenly onto the surface of the stone and/or grout (you don't need to seal any surface you won't see when the project is finished, like the sides or back of your tiles). Buff off excess (when to start buffing varies from sealer to sealer, usually after 3-5 minutes), and allow to fully dry.


Many people think they'll have to reseal their stone every 6 months or every year, which is only the case if you purchase a topical sealer that sits on the surface and wears off quickly. However, a high-quality penetrating sealer such as Sealer's Choice Gold or Enrich 'n' Seal will last up to 15 years! A penetrating sealer will sink into the stone to provide a deep, long-lasting seal, while a topical sealer will sit on the surface and can wear off more quickly.

Our Sealers

1 Quart of Sealer's Choice Gold

Sealer's Choice Gold

  • A 15-year water-based penetrating sealer
  • Great for natural stone, ceramics, and grout
  • Won't alter the appearance of your materials
  • Low VOCs
1 Quart of Enrich 'n' Seal

Enrich 'n' Seal

  • A 15-year polymer-based penetrating sealer
  • An enhancing sealer: makes colors of natural stone and grout deeper, darker, and bolder
  • Great for unpolished natural stone and for darkening the color of cement-based grout
  • Does not change the finish of natural stone: polished stone stays polished, matte finishes stay matte
1 Quart of High Gloss Sealer

High-Gloss Sealer

  • A 3-year water-based topical sealer
  • Adds a high-sheen finish to unpolished natural stone and ceramics
  • Not for use on already-sealed surfaces
1 Quart of Floor Shine and Hardener

Floor Shine & Hardener

  • A 1-year high-sheen protective coating
  • Apply to floor tiles that have already been sealed
  • Helps resist surface abuse

Other Products to Consider

Sealer and Coating Remover

Sealer & Coating Remover

  • Strips old sealers, grout haze, coatings, synthetic finishes, grease build up, and deep-set stains
  • Won't damage natural stone or grout
Aqua Kleen Bottle

Aqua Kleen

  • A daily cleaner for tile, stone, and grout on floors, walls, or countertops
  • Will not harm or strip sealers

Stone Clean & Shine

  • A daily cleaner and degreaser for sealed, polished natural stone countertops (including granite and marble)
  • Will not strip sealers or damage natural stone or grout
  • Adds a little bit of shine and sealer with each application

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