July 2, 2012
Thanks for your inquiry on our BEHR Premium Concrete & Masonry Cleaner & Etcher. The BEHR Cleaner & Etcher is designed to help etch the surface to provide the ideal profile for the top coat to be applied. The BEHR Cleaner & Etcher should work on dense trowelled concrete however in your case you mentioned it had a glass finish look which could indicate that is was sealed with some type of clear sealer or polished. In this case, you may need multiple treatments of the BEHR Cleaner & Etcher with the combination of scuff sanding any other method of abrading the surface. To ensure the surface is no longer sealed, perform a water drop test. Test the surface by dripping a small amount of water onto the surface. If water beads and does not soak into the concrete, it indicates that a sealer is still present and additional treatment is necessary.
The BEHR Premium Cleaner & Etcher uses Organic Salts as the active ingredient in its formula, which is less hazardous than traditional acid base cleaner/etchers in the market which commonly uses Hydrochloric acids (considered highly acidic and hazardous).
After properly preparing the surface, you may choose to apply BEHR Premium Solid Color Concrete Stain or BEHR Premium Semi-Transparent Concrete Stain. The BEHR Solid Color Concrete Stain will provide a decorative opaque solid finish, while the BEHR Premium Semi-Transparent Concrete Stain will provide a variegated natural stone type finish that allows some concrete to show through. Please refer to the BEHR Premium Concrete & Wood Floor Coating color card to see sample images of the finish looks.
1out of 1found this answer helpful.