Stone Enhancer MD

A low-solids acrylic coating that protects the surface with little change to the appearance of the material. This treatment maintains a breathable surface.


The Stone Enhancer series contains two film-forming, acrylic protective coatings for stone surfaces that help to protect against water penetration, erosion, freeze-cracking, water and oil stains, and a variety of other damaging environmental elements. These products help to deter unsightly stains caused by mold and mildew. Surfaces treated with these products can easily be cleaned using deionized water and a mild detergent such as Presto’s Green-Kleen®. Stone Enhancer MD and HD improve stone material in different ways:

Stone Enhancer ® MD: Invisible, film-forming, acrylic-based protective treatment leaves an enhanced shine on stone while maintaining a breathable surface 

Stone Enhancer ® HD: Film-forming, acrylic-based protective treatment leaves an enhanced shine on stone surfaces.  This treatment does not allow a breathable surface. 

Active Ingredient: Acrylic copolymer


  • Film-forming
  • Reduces leaching
  • Stain-resistant
  • Superior surface protection against mineral staining
  • Great coverage rates
  • Creates slip-free surface
  • Creates easy to clean surface
  • Does not easily break down, even under extreme environmental conditions
  • Protects against efflorescence
  • Bridges minor gaps
  • UV- and heat-resistant
  • Helps to protect against water erosion
  • Multi-surface safe
  • Long-lasting
  • Easy to use and clean up


Not suitable for below-grade applications.

Horizontal or Vertical

Can be used on either horizontal or vertical surfaces. Horizontal surfaces may need reapplication sooner than vertical surfaces.

Intended Surfaces

Use to seal all types of stone surfaces, including concrete, precast, GFRC, natural stone and masonry.

Stone Enhancer MD Product Info Chart
Solvent Solvent Based
Flammable Yes
User Friendly No
Economically Efficient Yes
Environmentally Friendly No
Color Clear
Smell Petroleum

Surface Preparation 

Complete all caulking and surrounding construction substrate applications prior to using this product. Newly installed stone or grout must be allowed to cure before application. Protect against personal contact with this and all chemical products. Prior to the application of this product, ensure the stone is completely clean and free from all dirt, staining and biological growth using any of Presto’s stone cleaning products.

Make sure to thoroughly rinse the material to ensure no product is left behind on the surface prior to sealing. Any residue left on the surface can interfere with the protective coating. The use of deionized water is required to achieve full product performance. Never apply to a damp or wet surface. Do not apply in below freezing temperatures. Protect any unintended areas.


Use a low-pressure sprayer, roller, brush, sponge or lambs wool applicator. Product may also be back rolled. Do not dilute; apply full strength. Apply product to create an even coat on the surface. Allow product to saturate surface. Do not allow product to pool on the surface and dry, or protection will be uneven and a residue may form. Remove excess material with a rag or towel. 

A second coat may be needed for porous, absorbent surfaces or for superior protection. Subsequent coats should be applied in the same manner as the first while the initial application is drying. Never apply a second coat if two coats were not tested and approved prior to use. 

Protection will begin immediately after sealant dries on the surface. Cure time for maximum water and stain protection is 24-72 hours. Protect surface from contact with water for at least 48 hours. Application rates, concentration, temperature and humidity can impact dry and cure time. Use towels or rags to polish the surface.

In many instances, a combination of different stone cleaning products is necessary for various stone surfaces depending on their level and type of staining. Presto offers a complete line of stone cleaning products for all situations, including:

  • Stone Restore® HD For difficult to remove mineral stains caused by efflorescence, rusting, red clay, iron, and more 
  • Stone Restore® NC For general cleaning of sensitive stone surfaces that require a neutral cleaner 
  • Stone Restore® A+ For heavy stains caused by oil, grease, grime and environmental pollution 
  • Stone Restore® CT A citrus multi-purpose stone cleaner that removes oil and a variety of stains 
  • Stone Restore® CB2 For difficult to remove biological stains 
  • Stone Restore® PS For stubborn surface contamination on all types of polished stone


Clean tools and equipment with mineral spirits. In the event Stone Enhancer is allowed to come in contact with adjacent surfaces, dries and is difficult to remove, use one of the following surface restoration products: 

Suggested Maintenance 

For ongoing maintenance of the protected surface, we recommend the use of Green-Kleen diluted 10 to 1 with water, preferably heated 
deionized water
. Apply the diluted product to the surface. Allow to sit for one or two minutes and scrub with a soft bristle if necessary to remove build up. Then gently rinse the surface clean with low pressure. For exterior vertical surfaces, we recommend cleaning the surface every 2-3 years in order to retain a clean appearance and preserve the previous restoration. High pressure is not needed and may damage the surface coating or weaken its performance. This maintenance cleaning is not mandatory to ensure the coating will last as stated in the warranty and is only a recommendation.


The information provided by Presto for the safe and effective use of this product, and all of our products, is believed to be good and accurate. However, due to the many different possible applications of this product, careful considerations should be made when selecting its suitability for each surface.

The information provided should never be substituted for individual testing to ensure the product’s compatibility with each surface intended for use. The purchaser shall assume all responsibility for determining the suitability of this product. When used as intended, this product will perform as stated. No other warranty can be made for this product, verbally or written.

Presto warrants this product to be free from defects. In the event this product is found to be defective, we will provide a sufficient amount of product to replace the defective product.

View Our Precast & Concrete Before & After Pictures

View our Stone Restoration Pictures Featuring projects that utilized our many products for their building's restoration, maintenance or cleaning project.

After cleaning or sealing stone surfaces, the glass windows and metal frames almost always need to be cleaned, and many times window spots and stains will need to be removed as well. View our glass and metal products that compliment our stone restoration and protection products.

Don't Forget the Glass & Metal Surfaces
Justin McGarty,
May 19, 2012, 11:50 AM