What KOSTER does

KOSTER is a German-origin specialty construction chemicals company headquartered under the KOSTER Group, with US operations (KOSTER American Corporation) and additional wholly-owned regional subsidiaries in Canada, Germany, the UK, France, and Brazil. Founded in 1982, the company develops and manufactures chemical waterproofing and restoration products across the full building envelope, including wet room waterproofing systems (BD 50 line with associated primers, tapes, and corner sleeves), moisture vapor reduction systems for concrete floors (VAP I 2000 series), self-leveling urethane cement flooring (UC 100/200/300) and epoxy/polyaspartic coatings, horizontal barriers against rising damp (Crisin 76 injection system with patented Capillary Rods and Suction Angle), masonry restoration plasters and consolidants, joint sealants, facade protection systems, and repair mortars. Two patented installation components, the Capillary Rods (M 963) and the Suction Angle System, underpin its pressureless horizontal barrier method and are central to its technical differentiation.

The company's products are formulated for professional contractors and building restoration specialists addressing moisture intrusion, rising damp, concrete floor moisture causing flooring failures, wet room water damage, historical masonry decay, and corrosion of concrete and steel. KOSTER emphasizes systems selling rather than individual product sales, providing coordinated primer, membrane, accessory, and documentation packages, with the VAP I system offered with a 15-year multi-million dollar independently insured warranty and tested against ASTM F3010-13 and related standards.

KOSTER operates through a channel-partner go-to-market model, selling exclusively through authorized distributors in 40+ countries without disclosed public pricing. The firm supports its channel with technical content (method statements, specifications, LEED documentation, dew point charts, warranty documents, and product videos), in-person training seminars, and an extensive reference project library organized by application, country, product, and building type. No public pricing, no app or API, no disclosed revenue, and no funding rounds are present; the company remains privately held within the KOSTER Group.

Name

KOSTER

Legal name

KOSTER American Corporation

Website

https://kosterusa.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

KOSTER (founded 1982) is a German-origin specialty construction chemicals company that develops and manufactures waterproofing, moisture vapor reduction, masonry restoration, and floor coating systems, distributing them through authorized partners in 40+ countries to professional contractors and restoration specialists.

Ownership category

akta.pro rank

Product category

Construction Waterproofing Products

NAICS

Other Concrete Product Manufacturing (327390)

SIC

Adhesives & Sealants (2891)

akta.pro primary industry

Concrete Repair, Crack Injection & Grouts (IMADAOAD)

akta.pro secondary industries

Concrete Repair, Sealing & Waterproofing (Coatings/Membranes) (IMAIAKAK), Concrete Waterproofing & Moisture Mitigation (HSAGALAF), Sealants, Expansion Joints & Weatherproofing (Caulking, Joint Systems) (IMAFAMAF), Floor Coating & Resinous Flooring (Epoxy/PU/Polished Concrete) (IMAIAKAG)

Keywords

• Construction waterproofing products
• Concrete moisture remediation
• Crack injection systems
• Concrete restoration materials
• Below-grade waterproofing

Headquarters

HQ city

Virginia Beach

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, Marketing or Sales

Revenue model

1. Waterproofing Product Sales: KOSTER generates revenue through the sale of waterproofing chemicals, coatings, mortars, injection systems, and accessories through their global distributor network. Products are sold in various unit sizes (55 lb bags, 2.64 gal jerrycans, etc.) to professional contractors and building restoration specialists.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

KOSTER manufactures and sells waterproofing systems for the construction industry, addressing moisture and oil contamination in concrete flooring. Its portfolio spans waterproofing products for below-grade and above-grade structures, concrete restoration materials, and crack/joint injection systems used by professional contractors and restoration specialists.

Product overview

KOSTER is a construction waterproofing and restoration product company offering comprehensive systems for moisture mitigation, waterproofing, and masonry restoration. The product portfolio includes multiple integrated system categories: (1) Wet Room Waterproofing systems (KOSTER BD 50 line with primers, adhesives, corner pieces, and sealing tapes); (2) Moisture Vapor Reduction Systems (VAP I 2000 series for controlling concrete floor moisture); (3) Floor Coatings and Urethane Cement systems (UC 100/200/300, MPE epoxies, UTC top coats, CT 215/221); (4) Masonry Restoration products (Restoration Plaster White, Polysil TG 500, Fine Plaster, SB Bonding Emulsion); (5) Horizontal Barrier/Injection systems (Crisin 76, Crisin 76 Cream, Suction Angle, Capillary Rods); (6) Joint Sealants (Joint Sealant FS-H, KB-Flex 200); (7) Façade Protection (Siloxan, Façade Cream, Silicone Paint); (8) Repair Mortars (WP Mortar, Betomor Multi A, Repair Mortar NC, C-Coat); (9) Waterproofing membranes and systems (21, Deuxan 2C, KSK membranes). These products work as integrated systems designed for specific applications including basements, swimming pools, tunnels, wet rooms, and building facades. The company also offers supporting accessories like Glass Fiber Mesh, application tools (Squeegees, Gauge Rakes, Spike Rollers), and primers (SL Primer).

Differentiator

Problem solved

Functional benefit

Brands

• KOSTER Crisin 76: Pressureless injection system for horizontal barriers against rising damp
• KOSTER VAP I System
• KOSTER BD System
• KOSTER UC System

Products and services

• Concrete Moisture and Oil Remediation Systems Treatment systems for addressing moisture vapor transmission and oil contamination in concrete slab flooring, used by professional contractors and restoration specialists before floor covering installation.
• Below-Grade Waterproofing Systems Waterproofing products and systems for below-grade (foundation, basement, underground) structures intended to prevent water intrusion in new construction and remedial projects.
• Crack and Joint Injection Systems Injection resins and equipment for sealing leaking cracks and construction joints in concrete structures, used by waterproofing and restoration contractors.
• Concrete Restoration Materials Repair mortars and restoration materials for damaged or deteriorated concrete, marketed to structural repair and restoration professionals.

Quantifiable outcome

• VAP I systems achieve <0.1 perms (water method ASTM E-96)
• +3 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Direct peers

• Sika AG: Global specialty chemicals leader offering a directly overlapping portfolio of concrete waterproofing, sealing, flooring, and concrete repair systems. Sika competes head-to-head with KOSTER's BD, VAP I, UC, and restoration product lines across the same contractor and distributor channels.
• GCP Applied Technologies (now part of Saint-Gobain): Specializes in concrete waterproofing and moisture mitigation, including the Preprufe and Silcor membrane systems that compete with KOSTER's basement and tank waterproofing lines. Directly comparable on commercial below-grade waterproofing tenders.
• Xypex Chemical Corporation: Crystalline concrete waterproofing specialist offering Admix, Concentrate, and Modified products for concrete waterproofing and repair. Competes with KOSTER's injection, restoration, and concrete protection lines on similar infrastructure and below-grade applications.
• Mapei S.p.A. Italian construction chemicals major with directly comparable offerings in concrete repair, waterproofing membranes, resin flooring, and sealants. Mapei's Ultralite, Mapelastic, and Topcem lines compete with KOSTER's BD wet room, NB 1, and UC urethane cement systems for the same professional contractors.
• Penetron International: Crystalline waterproofing admixture and topical system provider targeting basement, tunnel, and water tank applications. Direct competitor in the concrete waterproofing and moisture mitigation category where KOSTER Crisin, NB 1, and VAP I systems operate.
• Euclid Chemical: Concrete admixtures, repair mortars, sealers, and waterproofing products manufacturer serving the same concrete restoration and construction chemicals market. Directly overlaps with KOSTER's repair mortar, waterproofing, and admixture offerings.
• W. R. Meadows: North American specialty manufacturer of concrete construction products including waterproofing membranes, sealers, and moisture mitigation systems. Closely comparable mid-sized specialty competitor in concrete waterproofing and floor preparation chemicals.

Broad incumbents

• Carlisle Construction Materials: Major US roofing and waterproofing membranes manufacturer (EPDM, TPO, self-adhered) with a substantial commercial waterproofing and restoration footprint. Overlaps with KOSTER's roof waterproofing and below-grade membrane offerings, though Carlisle is far broader in scope.
• Tremco Incorporated: Specialty building products manufacturer with overlapping offerings in sealants, waterproofing, coatings, and flooring. Competes with KOSTER in commercial waterproofing, joint sealing, and decorative floor coatings.
• BASF Master Builders Solutions: BASF's construction chemicals division offers waterproofing, concrete repair, flooring, and sealants as part of a much broader chemicals portfolio. Overlaps with most of KOSTER's product areas and dwarfs KOSTER in R&D and global sales coverage.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/koster_american
• LinkedInlinkedin.com/company/koster-american

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 records

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 KOSTER