04-02-2007, 11:00 AM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,883
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Wash the floor with a solution of TSP (Tri-Sodium-Phosphate and water) and rinse well. Now let dry or force dry. Concrete is very porous and sucks up moisture, so,........apply a silicone sealer. When that's dry use a good tile adhesive and go for it!
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