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Slate Tile Sealer

Medha Godbole Aug 11, 2019
Slate tile sealers undertake the dual function of adding a protective layer over the flooring, as well as giving them a great finish. In the following sections, we will look through the varied types of sealers available and the functions that they undertake.
Slate tiles are one of the most popular types of tiles used in construction. Due to their thermal stability, and the quality of being fireproof, slate has been a used in various day-to-day devices, including tiles.
Slate tiles are used for the purpose of both, interior and exterior decorations--especially in kitchen and bathroom flooring. However, it is important to protect these tiles, and it is in this direction that a sealer needs to be used--it helps in the protection of the tiles and in giving them a proper finish.

Sealing a Slate Tile

Slate sealing is the process of treating the surface of the slate stone using a sealer. This is done to reduce chances of staining, and absorption of gas and water. This is important because slate is a porous stone, letting gas to pass through easily, causing damage. Using a sealer increases life of the tile and gives a good finish to the tiled flooring.

Varieties of Sealers

There are 3 main types of slate sealers. These adopt different qualities, but work towards the same goal.

Penetrating Sealers
Penetrating slate sealers penetrate into the slate stone, having siliconates, siloxanes and fluoro primers. Around 1 mm of the stone is penetrated by these sealers. There are several water-based slate tile sealers available as well.
Topical Sealers
Made of polyurethane or acrylics, this protects the tile against water and oil.

Impregnating Sealers
Akin to penetrating sealers, this sealer works by penetrating deeper than earlier mentioned sealers. These sealers have silanes and modified silanes. These are good for protecting the tiles from constant traffic and heavy wear and tear.
In addition to these, experts say that water-based polyurethane sealers emit the least amount of toxic fumes, thus making them extremely popular. These sealers also help the tile from cracking and becoming yellow.

Application Procedure

  • Apply the sealer in a thin coat following the tile grain.
  • Let the tile dry for a minimum of 2 hours before applying the second layer.
  • Next, mix the sealant with grout instead of mortar.
  • Make sure that the sealer has been applied well and the tile has been made waterproof, especially when the tile is going to be installed on a concrete slab.
  • Consider the texture you want for your slate tile-glossy, matte or natural, and then pick a sealer accordingly.
  • Once you are completely done with the sealant, let the tiles dry for a minimum of 24 hours before you start walking on them.

Clean the tiles with mild soap and water, and vacuum or dry mop them between the periods when you do not wash them.