The right slate sealer is not hard to find. The search should start in determining the characteristics of slate as a construction material. Slate has been used for billiard tables and electric motor parts because of its fire resistance and excellent insulation properties and was later introduced as a material for making tiles. It was also used in the olden times as roofing materials called roof shingles and has been continuously used as a fine stone material for building purposes in today's modern construction industry. Its use as slate tiles for flooring has become popular and it is for this use that the right sealer for slate tiles is sought by contractors.
 

Slate tiles retain the porous characteristics of the natural occurring slate rocks which are actually sedimentary shale formed by geological forces for millions of years. Although such rocky materials are hard and sturdy, they are easily penetrated by water-borne substances and organisms that can ruin its aesthetic qualities. Using a sealer is the best way to preserve slate materials that are made into kitchen floors, outside pathway floors leading to pools and external patio floors. To protect slate from molds and other similar organic matter that attack the tile surfaces, the sealer must be applied properly and made to penetrate the interior of the tiles with substances that can preserve their aesthetic qualities.
 

Aside from proper application, the kind of sealer must also be taken into consideration. Many prefer water based penetrating and impregnating sealants because they are more efficient in providing protection for the surfaces of slate tiles. Without protection, the tiles will lose its natural color and the surface becomes spotty and unsightly to behold. A good water-based sealer must be able to penetrate the surface of the tiles and impregnate them with the right chemical shields that will prevent discoloration and tarnishing of the tile surfaces.

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