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Cathedral Stone Coatings

Henry Frerk Sons offers potassium silicate coating systems from Cathedral Stone and Keim Mineral Coatings. Silicate coatings are the premier restoration coating system for historic masonry. Our Cathedral Stone Coating products offer a high-quality finish and protective layer that is customizable for a variety of projects.

Learn more about historic restoration coating products we carry from Cathedral Stone in the product details below or contact us today!

Our Cathedral Stone Products

terra cotta coating

Terra Cotta Coating Glaze

Terra Cotta Glaze is a non-yellowing, water-based, acrylic coating that highlights the natural color of masonry by providing a clear, semi-gloss sheen. The treatment does not alter the natural texture of the surface, nor significantly affect the vapor transmission qualities of the substrate. Terra Cotta Glaze provides a durable finish to terra cotta and masonry surfaces. See full details here.

  • Features
  • Water-Based Acrylic: For easier cleanup.
  • Vapor Permeability Similar to Glazed Architectural Tiles
  • Good Exterior Performance: Highly Abrasion, Stain, and UV Resistant.
  • Tenacious Adhesion
potassium silicate coating

Potassium Silicate Coating

Cathedral Stone Products has developed a Potassium Silicate Coating for use on all masonry (mineral surfaces). Similar coatings have been used in Europe for over 160 years and are now produced in North America. Cathedral Stone’s Potassium Silicate Coating combines the advantages of silicate/mineral and silicone coatings. Unlike latex and acrylic coatings, Potassium Silicate Coating forms a molecular bond with the masonry substrate. See full details here.

  • Features
  • Bonds to masonry
  • Protects steel reinforcement
  • Minimally flammable
  • Not affected by freeze/thaw
  • Water Repellent
  • No VOCs

Benefits of Cathedral Stone Coatings Products

Non-yellowing — Products do not yellow as they age

Chemical/Abrasion Resistant —Coatings protect against degradation due to moisture, oxidation, and exposure to UV rays and a variety of environmental or industrial chemicals

Consolidant-like qualities that repair friable masonry

Products are versatile when it comes to matching

Products to Pair With Cathedral Stone’s

Our Cathedral Stone Coating products pair well with Jahn Repair Mortars and enhance the performance of both products.

All Cathedral Stone coatings are custom order. To place an order, please contact John Gibbons at 312-833-5519. For technical questions or custom blending, please call Elisabeth Logman at 773-231-8954 x.113.