Old 03-30-04, 08:29 PM
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What are the pros/cons of slate in an entry way or entry/hall from the garage?
Does natural slate have to be sealed? How often?
Does it flake or get chalky, and does that go away after a while?
Does it eventually smooth out?
Old 04-01-04, 06:20 AM
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Slate makes for a beautiful floor. Keep in mind that some Indian and Chinese slate are dense and soft and may flake. Vermont slate is smoother and denser. Keeping slate sealed tends to keep weaker surface areas 'glued' down and prevents flaking. Keeping grout out of ridges and rough surfaces when grouting is a challenge.

A pre-grout pre-sealer is recommended. Once cement grout gets in ridges and texture, it is impossible to remove when dry. A pre-sealer will prevent grout smears, getting grout in ridges and texture. A same day penetrating sealer can be used that produces no shine or color change.

Keeping grout sealed will protect stone and aid in ease of maintenance and prevent efflorescence. Always read and follow all product directions carefully. Use only sealers, cleaning and maintenance products that are recommended for natural stone. There are water-based surface and solvent based surface and penetrating sealers available that offer different gloss levels.
Your local stone and tile dealer should be able to offer helpful tips and recommendations for pre-sealers and sealers.

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