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Importance of Sealed Stone by LATICRETE

Importance of Sealed Stone by LATICRETE

The Importance of Sealed Stone

Determining if a stone is sealed is an important question that must be answered prior to considering the application of a new sealer treatment. Realising if an unsealed stone surface will be able to accept a sealer is also important in determining how to move forward. There is a very simple and inexpensive test to determine if the stone, Saltillo tile, or cement-based grout is currently sealed, or if it even requires a sealer.

Water Test

A quick and easy test is performed with water and can provide valuable information about the current state of the stone or grout surface:

  1. Apply water in a few different areas of the stone and/or grout.
  2. Make each application of water approximately 25mm wide.
  3. Roughly measure the size of the circle of water without making contact. Make a notation as to the size of each application of water.
  4. Place a drinking glass over each application of water to protect from evaporation.
  5. Let sit undisturbed for 20 minutes.

After 20 minutes remove the glass(es) and observe the results;

No change - If the water appears the same as when it was applied and the water measures the same diameter, then a sealer is already present or the stone is very dense and does not need a sealer.

Slight change - If the water is still present in a bead but appears to be absorbing into the surface then a sealer may already be present but requires resealing. Or, the stone is not sealed and is dense enough to allow for the slow absorption of water.

Complete change - If the water is completely absorbed into the surface and the spot appears to have grown in size, then the stone is not sealed and the use of a high-quality sealer (e.g. STONETECH® BulletProof® Sealer, STONETECH Heavy Duty Sealer, STONETECH Impregnator Pro® Sealer, etc) is strongly recommended.

Continue reading Technical Data Sheet TDS-1261.

View/download:

If you have any questions regarding the use, installation, or maintenance of STONETECH or sealed stone, please contact LATICRETE Technical Services today.



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1800 331 012

29 Telford Street, Virginia, Qld, 4014

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1800 331 012

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