How to Seal Tile
Most tiles used in homes are glazed, and the glazing process creates a seal. But if you use porous materials, such as terra cotta, marble or slate, you will need to seal the tile to keep the surface looking good and to prevent stains on that surface you so carefully chose. Here are some tips on applying sealer. Does this Spark an idea?
Instructions
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1
Pick the type of sealer to apply based on the type of tile being installed. Follow the manufacturer's instructions on the type of sealer to use. Some suggest a topical sealer followed by acrylic floor polish. Others suggest a penetrating seal.
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2
Use a sponge to put the seal on the tile before you apply the grout. Applying the seal first protects the porous surface from the grout, which can go right into the stone.
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3
Apply a thin layer of sealer, rather than a thick one, which can take longer to dry.
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4
Rinse the sponge if dark material from the tile's crevices comes off. You don't want the dark material to stick to the surface if you continue to work in the sealer.
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5
Let the seal dry, then grout the tile. Remove any excess grout from the tile surface.
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Put a second coat of sealer on the tile to protect it.
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Tips & Warnings
The acrylic floor finish will prevent you from wearing through the sealer. If you wear through the sealer, you will have to strip and reseal the whole surface.
Wear gloves to avoid getting sealer on your hands as you work.
