Cathedral Stone Products

What Cathedral Stone Products does

Cathedral Stone Products, Inc. is a Hanover, Maryland-based specialty manufacturer and direct-to-professional seller of the JAHN Masonry Restoration Systems, founded in 1982 by stonecutter Dennis Rude. The company produces and distributes a vertically integrated product portfolio of substrate-compatible, mineral-based cementitious mortars and grouts (M31-M160 series tailored to limestone, sandstone, brownstone, brick, terra cotta, marble, granite, concrete, and bluestone substrates), biodegradable cleaners and paint strippers, potassium silicate coatings and water repellents (R-97, Guardian), liquid and powder pigments, custom color-matching services, and professional restoration tools. Its core technical differentiator is JAHN's chemistry — single-component mortars without latex or acrylic bonding agents that match substrate elasticity, porosity, and tensile/compressive strength to deliver 50-year repair life versus the 3-5 year failure cycle of polymer-based competitor products. Cathedral Stone holds sole exclusive worldwide manufacturing rights for the JAHN systems.

The company operates a B2B go-to-market targeting architects, engineers, preservation specialists, and masonry contractors through a Find a Rep/Dealer network, direct e-commerce store, phone-based inside sales, and corporate headquarters. Jahn Certification workshops (3-day intensive plus 1-day hands-on sessions providing AIA/CEU and HSW credits) are a gating mechanism — certified installers are required to purchase premium mortars — creating a self-reinforcing talent and specification moat. Revenue derives from one-time product sales, tiered extended warranty programs (5-year at $2,000, 10-year at $4,000 for Jahn Mortars and R-97, plus a free 20-year coating warranty), professional training and certification fees, custom color-matching services ($256), and tool sales. The customer base is highly distributed across government, educational, commercial real estate, and transportation infrastructure segments, anchored by iconic reference projects including the White House, U.S. Capitol, Washington Monument, Empire State Building, Smithsonian, Harvard, Yale, Statue of Liberty, and the Pentagon. The business remains founder-owned and bootstrapped with no external funding.

Name

Cathedral Stone Products

Legal name

Cathedral Stone Products, Inc.

Website

https://cathedralstone.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

Cathedral Stone Products is a Hanover, Maryland-based manufacturer and direct-to-professional seller of the JAHN Masonry Restoration Systems — substrate-compatible mortars, cleaners, coatings, and repellents — serving architects, engineers, and certified contractors in historic masonry preservation.

Ownership category

akta.pro rank

Product category

Masonry Restoration & Repair Materials

NAICS

Masonry Contractors (238140)

SIC

Concrete, Gypsum & Plaster Products (3270)

akta.pro primary industry

Mortar, Grout & Masonry Cements (IMADABAL)

akta.pro secondary industries

Masonry Repointing & Mortar Joint Repair (HSAGALAH), Concrete/Brick/Stone Sealing (Masonry Sealants) (HSAGADAH)

Keywords

• Masonry restoration products
• Repair mortars grouts
• Masonry cleaners strippers
• Masonry coatings repellents
• Historic preservation materials

Headquarters

HQ city

Hanover

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Jahn Mortars & Grouts Sales: Sale of specialized mineral-based repair mortars for various masonry substrates (limestone, sandstone, brownstone, terra cotta, brick, marble, granite, concrete). Includes injection grouts, casting mortars, pointing mortars, and anchor setting mortars.
2. Masonry Cleaners, Strippers & Removers: Sale of biodegradable cleaning products for biological stains, oxidation, graffiti, rust, efflorescence, and paint removal. Includes Bio-Cleaner, Latex-Based Cleaner, Masonry Cleaner, and specialized removers.
3. Coatings & Repellents: Sale of Potassium Silicate Coatings, Liquid Silicate, water repellents (R-97, Guardian), liquid/powder pigments, stain kits, and terra cotta glaze for masonry protection and coloring.
4. Restoration Tools: Sale of specialized tools for masonry restoration including joint router kits, chisels, trowels, air hammers, rakes, sculpting tools, sponges, and spray bottles.
5. Jahn Certification Training: Revenue from 3-day Jahn Certification workshops and 1-day Hands-On workshops. Certification required for purchasing certain mortar products.
6. Extended Warranty Programs: 5-year warranties at $2,000 and 10-year warranties at $4,000 for Jahn Mortars and R-97 Water Repellent. 20-year free material warranty for Potassium Silicate Coating.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Cathedral Stone Products manufactures and sells the JAHN Masonry Restoration Systems — an integrated line of substrate-compatible mineral-based mortars and grouts, biodegradable masonry cleaners and paint strippers, potassium silicate coatings and water repellents, professional restoration tools, and tinting/color-matching accessories for masonry restoration, repair, and maintenance. The company is the sole exclusive worldwide manufacturer of JAHN Masonry Restoration Systems, sells direct to professional contractors, architects, and restoration specialists, and requires Jahn Certification for purchase of select mortars.

Product overview

Cathedral Stone Products offers a comprehensive, integrated JAHN Masonry Restoration Systems portfolio designed for professional masonry restoration, repair, and maintenance. The product ecosystem consists of five interconnected categories: Jahn Mortars & Grouts (including M31-M160 series repair mortars for specific substrates like limestone, sandstone, brownstone, brick, terra cotta, marble, granite, and bluestone, plus injection grouts, back fill, and natural adhesive), Cleaners/Strippers/Removers (biodegradable formulations for biological stains, oxidation, graffiti, paint removal, rust, efflorescence, and general masonry cleaning), Coatings & Repellents (potassium silicate mineral paints with molecular bonding, water repellents including Guardian and R-97, liquid pigments, stain kits, and specialty coatings like Terra Cotta Glaze and Epochrome), Restoration Tools (professional-grade equipment including joint routers, carbide rakes, chisels, trowels, air hammers, sculpting tools, and specialty sponges), and Mortar Color Products (powder and liquid pigments, color sample kits, and mortar sample boxes for color matching). All products are scientifically engineered for compatibility, with Jahn mortars designed to match the physical properties of specific masonry substrates to prevent failure from salt expansion or freeze-thaw cycles.

Differentiator

Problem solved

Functional benefit

Brands

• JAHN Masonry Restoration Systems: A full spectrum of integrated and compatible masonry restoration products including mortars, grouts, cleaners, coatings, and water repellents, developed from the original JAHN Restoration Mortars originally developed in Holland.

Products and services

• Jahn Mortars & Grouts Integrated line of laboratory-engineered mineral-based restoration mortars and grouts designed to match the physical properties of specific masonry substrates (brick, terra cotta, limestone, sandstone, brownstone, concrete, stucco, granite, marble, and bluestone) for professional masonry restoration, repair, and pointing.
• M70 Brownstone Repair Mortar

Quantifiable outcome

• Masonry restoration projects engineered to last 50+ years vs. 3-5 years for polymer-based mortars
• +3 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered minor.

• John Milner AssociatesminorStrategic or Co-development PartnerPartnered on Ronald Reagan Washington National Airport project where their Principal Architectural Conservator Alphonso Narvaez and Sr. Architectural Conservator Lane Burritt worked with Cathedral Stone on concrete restoration training and inspections.
• Hoffman ArchitectsminorStrategic or Co-development PartnerWorked with Cathedral Stone on Ross Hall at George Washington University project, providing on-site training and supervision of JAHN Restoration Mortar System installers.
• National Park ServiceminorStrategic or Co-development PartnerCathedral Stone installed JAHN Restoration Mortar Repairs to Ellis Island Indiana Limestone facade with National Park Service oversight.
• Lev Zetlin & Associates/Thornton TomasettiminorStrategic or Co-development PartnerEngineering partners for Empire State Building limestone facade repairs using JAHN Restoration Mortars from swing stages.
• A. Best Co.minorChannel Partner/ Reseller/ DistributorMasonry contractor partner for Empire State Building facade repairs working with Cathedral Stone products from swing stages.
• C.A. Lindman CompaniesminorChannel Partner/ Reseller/ DistributorMasonry contractor partner for Ronald Reagan Washington National Airport concrete restoration project.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• PROSOCO: PROSOCO manufactures specialty masonry cleaners, sealers, and consolidation products used in commercial restoration. Directly comparable in substrate-targeted chemistry and architecture/specifier GTM, although they have a broader construction-chemicals portfolio than Cathedral Stone's masonry-restoration focus.
• Conproco: Conproco produces a full line of concrete and masonry repair mortars, coatings, and grouts engineered for substrate compatibility. Closest direct competitor in the integrated masonry-restoration materials category with specialty mortars sold to contractors.
• Edison Coatings: Edison Coatings manufactures specialty restoration mortars, grouts, and coatings compatible with historic masonry substrates. Similar niche positioning in heritage/preservation repair chemistry and a comparable small specialty-manufacturer profile.
• Limeworks: Limeworks.us produces natural hydraulic lime mortars and plasters for historic masonry restoration. Comparable as a small specialty manufacturer targeting preservation architects and masons with traditional/compatible-material chemistry.
• US Heritage Group: US Heritage Group offers historically specified mortar products including pre-blended lime-based mortars for preservation projects. Directly competes in the architectural-grade restoration mortar specification market.

Broad incumbents

• Spec Mix: Spec Mix is a major pre-blended mortar and grout manufacturer serving masonry contractors through silo-based distribution. Adjacent competitor in the contractor-grade mortar category but focuses on new-construction applications rather than substrate-matched restoration.
• Euclid Chemical: Euclid Chemical is a diversified construction-chemicals manufacturer offering concrete repair mortars, grouts, and sealers. Overlaps with Cathedral Stone in masonry repair chemistry but operates across broader infrastructure and commercial segments.
• Quikrete Companies: Quikrete is the dominant packaged masonry and concrete products manufacturer in North America with a broad retail/contractor portfolio including mortars and repair products. Overlaps in masonry repair materials but lacks Cathedral Stone's preservation-focused substrate-specific positioning.
• BASF Master Builders Solutions: BASF's Master Builders Solutions division supplies concrete repair, grouting, and protection products for commercial construction. Large-incumbent alternative competing for institutional masonry restoration specifications through systems integrators.

Emerging players

• Bonstone Materials: Bonstone produces masonry restoration mortars and anchoring adhesives with stone-matching formulations targeting heritage preservation. Smaller and less commercially developed than Cathedral Stone but competes for similar specialty restorer customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/cathedralstoneproducts
• Xx.com/cathedralstone

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cathedral Stone Products