Cost effective alternative to extending life of damaged stone

Last Chance – WL500

Surface Consolidating Membrane for Erosion Plagued Stone and Decaying Stone & Concrete - Solvent Borne Acrylic Complex

WL500 was developed as an alternative to replacing stone with existing erosion issues and for soft friable or crumbling stone. WL500 is a penetrating, acrylic complex that forms a high-performance, seamless polymer matrix over the surface that powerfully adheres to the substrate resisting pressure from erosion and hydrostatic pressures beneath it. On the surface the barrier acts like a one- piece sheathing that protects the substrate below it from additional surface salt water entry while providing an attractive gloss wet look. Below it, the barrier, an engineered polymer of acrylic resins and other proprietary additives, anchors to the substrate holding the substrate in place while resisting erosion effects that may continue to develop from existing salt deposits.

For more information regarding this product, please download our Data Sheet & Application Guidelines.

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Application Highlights


  • Friable stone
  • Deteriorating concrete
  • Crumbling stone
  • Salt eroded stone


  • Cures in 30 to 40 minutes
  • Enhancing, rich wet look
  • Single coat or multiple coats
  • Gloss finish
  • Safe, easy to apply


  • Indoors and outdoors
  • Horizontal and vertical


  • One gallon bottles
  • Five gallon pails

Regulatory Compliance: VOC Compliance; This product cannot be shipped to the following VOC regulated states: California, Connecticut, Rhode Island, Maine, Massachusetts, New Hampshire, Vermont, Delaware, District of Columbia, Maryland, New Jersey, New York, Northern VA, Pennsylvania, Parts of Arizona, Ohio, Illinois, Indiana. In addition, these counties in California: LA County, Riverside County, Orange County, San Bernardino County.