What BNZ Materials does

BNZ Materials, Inc. is a privately held US manufacturer of specialty industrial insulation and refractory products, founded in 1988 by former Manville Corporation executives who acquired that company's Billerica, MA and Zelienople, PA plants. The company produces a full line of Insulating Fire Brick (IFB) in 13–16+ grades for service temperatures from 2000°F to 3200°F, calcium silicate structural insulation boards under the Marinite brand (including Marinite A, C, P, I, M, and CF variants) for applications up to 2000°F, Transite and CS85 fiber-cement boards, and a castables portfolio spanning Blazelite AHP, Blazelite, Blazecrete, and crystalline silica-free formulations. Proprietary technology centers on a Tobermorite crystalline structure, patented Blazelite AHP Alkaline Hydrolysis Protection chemistry, a patented ZelieBlok calcium silicate board process, and Marinite CF carbon-fiber reinforcement for aluminum casting. All products are non-asbestos; the company holds ISO 9001 certification across facilities and U.S. Coast Guard certification on Marinite marine products.

BNZ serves heavy industrial end markets — petrochemical, steel, aluminum, glass, general manufacturing, and marine/industrial fire protection — with documented case-study outcomes including 5-month paybacks and $200,000+ annual gas savings at a pulp and paper lime kiln. Revenue is generated through direct enterprise field sales, toll-free phone ordering, a website quote-request channel, and a worldwide network of fabricators and distributors anchored by wholly-owned BNZ s.a. in Plemet, France, which also serves as a European manufacturing and distribution center. Pricing is quote-based with multi-year contract cadences; no public price list exists. The company is owned by the founding executives or their successors with no disclosed institutional investors, parent company, or public listing, and operates with 51–100 employees across three manufacturing sites.

Name

BNZ Materials

Legal name

BNZ Materials, Inc.

Website

https://bnzmaterials.com

Company type

Private

Founded year

1988

Operating status

Operating

Headcount range

51–100 employees

Short description

BNZ Materials is a private US manufacturer of specialty high-temperature industrial insulation and refractory products, including insulating firebrick, calcium silicate boards, and castables, serving petrochemical, steel, aluminum, glass, and fire protection customers worldwide.

Ownership category

akta.pro rank

Product category

Refractory and Industrial Insulation Materials

NAICS

Drywall and Insulation Contractors (238310)

SIC

Structural Clay Products (3250), Adhesives & Sealants (2891), Miscellaneous Chemical Products (2890)

akta.pro primary industry

Insulation & Air/Vapor Barrier Systems (Thermal, Acoustic, WRB/AVB) (IMAFAMAD)

akta.pro secondary industry

Exterior Coatings & Surface Protection (Anti-corrosion, Fireproofing, Protective/Reflective Coatings) (IMAFAMAJ)

Keywords

• Insulating firebrick
• Refractory products
• Calcium silicate boards
• High temperature insulation
• Monolithic castables

Headquarters

HQ city

Zelienople

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Insulation Materials Sales: BNZ Materials generates revenue through the manufacture and sale of specialty industrial insulation materials including insulating firebrick, calcium silicate boards, castables, mortars, and cements. Products are sold directly to industrial users globally via field sales, phone sales, and website inquiries. Pricing is quote-based for B2B customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

BNZ Materials manufactures and sells specialty industrial insulation materials for high-temperature applications. Its core product lines include Insulating Firebrick (IFB) in 16+ grades for applications from 2000°F to 3200°F, calcium silicate structural insulation boards under the Marinite brand, castables (Blazelite and Blazecrete families), refractory mortars, insulating cements, insulating grouts, and insulating aggregates. The company operates manufacturing plants in Zelienople, PA, Billerica, MA, and Plemet, France, and serves industrial customers globally.

Product overview

BNZ Materials is a world-leading manufacturer of specialty industrial insulation materials, operating as a single unified product portfolio of high-temperature refractories and structural insulation products. The core offering centers on Insulating Firebrick (IFB) product lines in over 16 types spanning temperatures from 2000°F to 3200°F, complemented by the Marinite calcium silicate structural insulation board family (including Marinite A, C, P, I, M, and CF variants) for applications up to 2000°F. Additional product categories include Transite fiber cement boards, CS85 structural insulation, Blazelite AHP and standard insulating castables, Blazecrete dense castables, crystalline silica free castables (Blazelite 80, 3000 Cast/Gun), insulating and finishing cements (508, 460, 375, 375-L), refractory bonding mortars (Blakbond, Super Blakbond, No. 2986, No. 20), I-Fix Hot insulating grout, Blazelite insulating aggregates, and Zelieblok calcium silicate backup boards. The company operates manufacturing plants in Zelienople, PA (IFB), Billerica, MA (Marinite/Transite/CS85), and Plemet, France (IFB), with corporate headquarters in Littleton, CO. All products are non-asbestos and ISO 9001 certified.

Differentiator

Problem solved

Functional benefit

Brands

• Marinite: Calcium silicate structural insulation boards used for heat processing, fire protection, and electrical resistance applications. Available in various types including A, C, P, I, and M.
• Transite
• CS85
• Blazelite
• Blazecrete
• I-Fix Hot
• Zelieblok
• Blakbond

Products and services

• Insulating Firebrick (IFB) BNZ's flagship product line of insulating firebricks for high-temperature applications from 2000°F to 3200°F. Available in over 16 types across BNZ Grade (IFB 2000, IFB 2300, IFB 23HS, IFB 2500, IFB 26-60, IFB 2600, IFB 26HS, IFB 2800, IFB 3000, IFB 3200, IFB C-22Z) and PA Grade (PA 20, PA 23, PA 26). Made from high purity refractory clays with uniform controlled pore structure.
• Marinite Structural Insulation Boards Non-asbestos calcium silicate structural insulation boards with Tobermorite crystalline structure providing thermal shock resistance and consistently low thermal conductivity. Product line includes Marinite A and C (heat-treated for molten aluminum contact), Marinite P, Marinite I, and Marinite M (oven-dried formulations for fire protection and heat processing). Fire resistant up to 2000°F.
• Marinite CF Non-asbestos calcium silicate carbon fiber reinforced insulation board designed for casting aluminum. Features low shrinkage, thermal shock resistance, easily machined, and non-wetting characteristics. Available in sheet form or machined parts.
• Transite HT and Transite 1000 Non-asbestos monolithic fiber cement industrial boards for environments up to 1000°F where high strength is the primary concern. Used in foundry industry for flask liners, core drying plates, induction furnace casings, and electrical applications including busbar supports and electrode arm insulators.
• CS85 Structural Insulation High temperature replacement for asbestos Transite, offering highest strength and electrical resistance combined with minimal shrinkage for applications up to and exceeding 1800°F. Used for platen press insulation, foundry core and blow plates, induction furnace casing, electrical resistance insulation, and hot glass handling.
• Blazelite AHP Insulating Castables Hydraulic-setting monolithic refractories free of Alkaline Hydrolysis degradation. Product line includes Blazelite 23 LI AHP (2300°F), Blazelite 25 HS AHP (2500°F), Blazelite 26 LI AHP (2600°F), and Blazelite 28 LI AHP (2800°F). Can be rapid fired at rates up to 200°F per hour with no holds, eliminating API 560 dry-out requirements.
• Blazelite Insulating Castables Lightweight castable refractories using unique aggregate for thermally efficient products. Includes Blazelite 2100, 2300, 2300 LI, 2300 VLI, 2500, 2600 LI, and 2000 G for various temperature applications from 2100°F to 2600°F.
• Blazecrete Dense Castables High alumina dense castables for high-temperature applications. Product range includes Blazecrete 3000 G, Blazecrete 2300 ARG, Blazecrete 3200, Blazecrete 3000, Blazecrete 2800, Blazecrete 2600, and Blazecrete 2500 HS for service temperatures from 2300°F to 3200°F. Used in burner blocks, door linings, and special furnace atmospheres.
• Blazelite 80 Crystalline Silica Free Castable Crystalline silica free castable designed for FCCU and Petrochemical regenerator and reactor linings including Exxon Mobil Flexicoker Fluidized Bed. Designed for continuous use at 2700°F with excellent resistance to alkali/vanadium attack. Meets OSHA's 50 μg/m³ limit for respirable crystalline silica.
• Blazelite 3000 Cast and Gun Crystalline silica free insulating castables designed for continuous operating temperatures of 3000°F. Blazelite 3000 Cast for hot face and pre-cast applications; Blazelite 3000 Gun for gunning applications with low rebound and high strengths.
• Blazelite 200 AR Abrasion Resistant Castable Abrasion resistant castable for use in the catalyst transfer lines and riser lines in the FCCU Industry. Intermediate density of 116 pcf with a unique bonding system providing best in class abrasion loss and 40% reduction in heat flow compared to similar density competitive products.
• Insulating and Finishing Cement Air-setting cement materials mixed with water for application to irregular surfaces. Product line includes 508 Insulating Cement (1800°F), 460 Insulating Cement (1600°F), 375 Finishing Cement (1400°F), and 375-L Insulating Cement (1500°F) for the aluminum industry.
• Refractory Bonding Mortars Finely ground refractory materials for laying and bonding insulating fire brick and clay-based dense fire brick. Products include Blakbond, No. 2986, Super Blakbond, and Zelie No. 20, with temperature limits up to 3000°F.
• I-Fix Hot Insulating Grout Cost-effective insulating grout for filling gaps in deteriorated furnace or boiler mineral wool insulation. Can be pumped at 75 cubic feet/hour, 10 times faster than competing products. Available in I-Fix Hot 2300 and I-Fix Hot 2800 formulations. Does not contain refractory ceramic fiber.
• Blazelite Insulating Aggregates Insulating aggregates formed by crushing large slabs of low-density insulating material. Available in various grades with different temperature resistances and densities for use as raw material for insulating castables, loose fill for irregular spaces, and hot topping compound for steel foundries.
• Zelieblok 1900S and 2000S Calcium silicate backup insulation boards manufactured by a unique patented process. Zelieblok 1900S for temperatures up to 1000°C (1832°F); Zelieblok 2000S for temperatures up to 1100°C (2012°F). Designed as backup insulation for any refractory construction.
• Oxy Fuel Stop Safety product for separating oxygen fuel cylinders from fuel gas cylinders to meet OSHA regulations. Installation avoids potential OSHA citation of $1500.

Quantifiable outcome

• $200,000+ annual savings in natural gas costs for lime kiln insulation (Tennessee River Pulp & Paper case study)
• +6 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Resco Products: Resco Products manufactures monolithic refractories, brick, and specialty refractory products serving steel, aluminum, cement, and petrochemical industries. Its product breadth and US manufacturing base make it a close comparable to BNZ Materials across both IFB and castable lines.
• HarbisonWalker International: HarbisonWalker is one of North America's largest refractory manufacturers, producing monolithic refractories, bricks, and installation services that directly overlap BNZ's IFB and Blazelite castable product lines. Both serve petrochemical, steel, and aluminum customers with high-temperature insulation solutions.
• Plibrico Company: Plibrico manufactures and installs monolithic refractories, plastic refractories, and castables for high-temperature industrial applications. Comparable to BNZ in serving petrochemical, steel, and power generation customers with refractory installation products.
• Allied Mineral Products: Allied Mineral Products is a leading global manufacturer of monolithic refractories and pre-cast shapes, with strong presence in steel, iron, aluminum, and petrochemical end markets — directly paralleling BNZ's customer verticals and product categories.
• Pyrotek: Pyrotek specializes in high-temperature materials and engineered solutions for aluminum, foundry, and glass industries, including non-wetting insulation for molten aluminum. Directly comparable to BNZ's Marinite CF and aluminum-focused calcium silicate product line.

Emerging players

• Nutec Group: Nutec Group manufactures calcium silicate and microporous insulation boards for industrial, marine, and fire protection applications. Highly comparable to BNZ's Marinite and CS85 product lines in terms of material chemistry and end-use applications in high-temperature industrial insulation.
• Zircar Ceramics: Zircar Ceramics manufactures high-temperature ceramic fiber and rigidized insulation products for industrial furnaces and process equipment. As a smaller specialty player, it overlaps with BNZ in high-temperature insulation but focuses on ceramic fiber rather than calcium silicate boards or IFB.

Broad incumbents

• Morgan Advanced Materials: Morgan Advanced Materials manufactures high-performance ceramics, thermal insulation, and engineered refractory products serving industrial, energy, and transportation markets. Through its Thermal Ceramics division it overlaps directly with BNZ's high-temperature insulation offerings.
• Vesuvius plc: Vesuvius is a global leader in refractory products and foundry technology with operations across steel, iron, and glass end markets. It is a broader incumbent than BNZ with global manufacturing and broader product portfolio, but competes in the same high-temperature industrial insulation/refractory space.
• RHI Magnesita: RHI Magnesita is the world's largest refractory supplier, offering bricks, monolithics, and functional products. As a broad global incumbent, it competes with BNZ in petrochemical, steel, and cement refractory end markets while operating at significantly greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/bnz-materials

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 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 BNZ Materials