Protect-A-Stone is designed to repel oil, water and stains on a variety of stone surfaces from concrete and limestone to polished granite walls. This product is designed for high-performance building restoration and preservation applications.


This product is a clear, penetrating sealer with superior surface protection for stone surfaces that creates a barrier to protect against oil, water and stains without altering the appearance of the stone. It is designed to penetrate the surface and cure without the presence silica, expanding and filling cracks and crevices in the material to create a long-lasting repellency to oil, water and waterborne stains. This product utilizes proprietary UV-resistant fluorochemistry that provides a long-lasting protection. It can be applied to surfaces that have previously been treated with silane or siloxane water repellant materials. In independent tests, Protect-A-Stone prevented standing oil from penetrating the surface of concrete for over 2 years. After use, the surface is easily rejuvenated using Presto’s ReJuviClean®.


  • Superior surface protection
  • Reduces leaching from stone materials
  • Fast drying
  • Water-based
  • VOC compliant
  • Great coverage rates
  • Resists oil, water and most other types of stains
  • Low odor
  • Suitable for interior use
  • Will not discolor stone
  • Will not fade, crack or peel
  • Keeps surfaces looking new
  • Great on limestone
  • Allows for easy cleaning of substrate
  • Presents excellent surface bonding
  • Creates a breathable, protected surface
  • UV- and heat-resistant
  • Protects from efflorescence
  • Multi-surface use
  • Easy to use


Can be used on either horizontal or vertical surfaces.

Protect-a-Stone Product Info Chart
Solvent Water Based
Flammable No
User Friendly Yes
Economically Efficient Yes
Environmentally Friendly Yes
Color Slightly Yellow
Smell Unique


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 cleaning product left on the surface can interfere with the protective coating.

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. Do not apply at 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 or third 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.

For parking garages: Surfaces must be thoroughly cleaned prior to application of Protect- A-Stone. It offers water, oil and stain repellency for the surface that protects concrete from vehicle stains such as motor oil and transmission fluid. With proper use, regular cleaning can be performed with a street cleaner, pressure washer, oil absorbers and other techniques. 

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 water. Clean any area that may have overspray with one of the products below: 


For light-cleaning and rejuvenating benefits, Presto’s ReJuviClean® can be used. Or for ongoing maintenance of the protected surface, we recommend the use of deionized water. If necessary, use a soft brush to loosen any stubborn soils from the surface. For exterior vertical surfaces on a building that is being properly cleaned using Presto products, we recommend cleaning the surface every 1-2 years for horizontal surfaces, and every 2-3 years for vertical surfaces, in order to maintain 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 suggestion.


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 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.


Protect-A-Stone is Special Order Only. Call For Pricing and Availability.

This picture demonstrates the effectiveness of Protect-A-Stone on a piece of treated concrete against, transmission fluid, motor oil and brake fluid. These contaminates were allowed to remain on the surface for 3 months before taking this picture

This picture demonstrates the effectiveness of Protect-A-Stone of polished limestone. Notice how water penetrates the stone everywhere except the bottom right hand corner where Protect-A-Stone was applied using 1 water based coat.

Justin McGarty,
May 19, 2012, 11:46 AM