Tile & Stone Installation

Safe Clean Crystals

(For use over Mexican Saltillo and Stone)

SGM Safe Clean Crystals is a non-fuming, odorless, and non-volatile dry powder (sulfamic acid) with select additives. When our Safe Clean Crystals are dissolved in water in the correct proportions they form an efficient cleaning solution. The crystals will remove cured grout, mortar haze, and mineral deposits, including efflorescence, from concrete, grout, masonry surfaces, ceramic, porcelain, quarry, and acid-resistant natural stones.

Product Details





Do not use on polished marble or metallic glazed tiles, treated, or coated metals. Use caution near carpet, fabrics, colored grout, or colored cement tiles. Safe Clean Crystals may etch, lighten, or discolor cementitious materials, including grout and mortars. Ensure that all mixed solution is neutralized after cleaning.


KEEP OUT OF REACH OF CHILDREN. Store in an upright position.


  • Eye Contact: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical attention if irritation persists.
  • Swallowed: Do not induce vomiting. Get medical attention.



Due to the differences of each surface, several inconspicuous test areas should be completed to determine desired results. User must determine the suitability of the product for its intended use.

The most effective cleaning solution is prepared as follows: Use a plastic mixing pail and add 8 ounces of Safe Clean Crystals to one (1) gallon COLD WATER. Stir well until all the crystals are dissolved. If a few crystals remain (do not dissolve), the cleaning solution is at FULL STRENGTH. Pre-wet the floor area that is to be cleaned. Apply the cleaning solution with mop or sponge. Allow the cleaning solution to dwell a few minutes. Scrub with a stiff bristle brush or commercial floor machine, let stand a few minutes so the cleaner can react, then rinse well with clean water. Rinse again, in the same manner, to be sure the area is neutralized. Make certain all the rinse water is “picked up”. Using a water vacuum is the most effective way to pick up the rinse water. Depending upon the condition of the area, a second application may be necessary in some cases.


Coverage will vary depending on density, porosity, texture, surface absorption, weather, time the solution is left on the surface and application methods. Used as directed. Safe Clean Crystals will cover approximately 300—500 square feet (28m2—46m2) per one (1) gallon (3.78 L). Optimum application temperature is between 50°F (fifty degrees Fahrenheit) — 90°F (ninety degrees Fahrenheit).


Up to one (1) year from date of manufacture in unopened properly stored container.


When the time comes to re-seal natural stone, ceramic/porcelain tile & grout, be sure that it is sufficiently cleaned. Refer to product recommendation chart for appropriate products to be used on specific surfaces.

SGM, Inc. warrants this product will perform in accordance with its intended use for a period of one (1) year from the date of manufacture. Any claim for defective product must be submitted in writing to SGM, Inc., and samples of defect must be provided. SGM, Inc.’s sole obligation will be to replace any product determined to be defective by SGM Inc. EXCEPT AS PROVIDED HEREIN, SGM, INC. MAKES NO OTHER REPRESENTATION OR WARRANTY OF ANY KIND, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE. IN NO EVENT SHALL SGM, INC. BE LIABLE FOR DAMAGES OF ANY KIND OR NATURE, WHETHER ARISING BY CONTRACT, TORT OR OTHERWISE. SGM, INC.’S SOLE OBLIGATION WILL BE TO REPLACE ANY PRODUCT DETERMINED BY SGM, INC. TO BE DEFECTIVE.