Therm-O-Rock West

What Therm-O-Rock West does

Therm-O-Rock West, Inc. (TOR-W) is a privately held industrial mineral processor headquartered in Chandler, Arizona, that manufactures expanded vermiculite and perlite products for sale to enterprise customers across four primary verticals: agriculture/horticulture, construction and building materials, animal feed, and inert carriers. The company thermally expands naturally occurring silicate minerals — vermiculite (a hydrous phyllosilicate) and perlite (an amorphous volcanic glass) — into lightweight, inert, heat-resistant materials used for soil aeration and moisture retention, lightweight concrete and insulation, GRAS-designated feed additives and carriers, and industrial absorption applications.

Production runs on a 10-acre facility sited next to major highways and equipped with rail siding, six perlite expanders, and multiple ore silos that enable dedicated production runs, custom particle sizing, and inventory buffering against supply chain disruptions. TOR-W markets both standard and private-label packaging, and accepts toll blending contracts for proprietary customer formulations with secure handling and flexible packaging formats (bags 2-65 lbs; totes 300-3,000 lbs).

The business model is sales-led and B2B: quote-based, unit-priced sales initiated via phone and direct outreach, with no disclosed subscription, recurring, or digital revenue streams. Marketing is minimal — primarily a website, product documentation, MSDS/OMRI/GRAS certifications, and direct contact. TOR-W claims over 40 years of operating history, OMRI certification for organic use, FDA GRAS status for feed/food contact, and a customer base described as "well-known companies" across the Western US, Canada, and overseas markets, though no individual customer logos or revenue figures are publicly disclosed.

Name

Therm-O-Rock West

Legal name

Therm-O-Rock West, Inc.

Website

http://www.thermorock.com/

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

11–50 employees

Short description

Therm-O-Rock West is a Chandler, Arizona-based manufacturer of expanded vermiculite and perlite products serving enterprise customers in agriculture, construction, animal feed, and industrial inert carrier industries, with toll blending and contract packaging services.

Ownership category

akta.pro rank

Product category

Industrial Minerals Manufacturing

NAICS

Ground or Treated Mineral and Earth Manufacturing (327992)

SIC

Abrasive, Asbestos & Misc Nonmetallic Mineral Prods (3290)

akta.pro primary industry

Perlite & Vermiculite (IMAEAFAJ)

Keywords

• Expanded vermiculite products
• Expanded perlite products
• Toll processing services
• Horticultural mineral products
• Construction mineral aggregates

Headquarters

HQ city

Chandler

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, Infrastructure, Marketing or Sales

Revenue model

1. Mineral Product Manufacturing and Sales: Manufacturing and sale of vermiculite and perlite products in standard or private label packaging. Revenue is generated through product sales with no explicit subscription or recurring model mentioned.
2. Toll Processing and Blending Services: Toll blending services for proprietary formulations according to customer specifications, including contract and custom packaging of dry powders in bags (2-65 lbs) and totes (300-3000 lbs).

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Therm-O-Rock West (TOR-W) manufactures expanded vermiculite and perlite mineral products for industrial and agricultural end markets. The company produces consistent high-quality vermiculite and perlite in standard, private label, and custom particle sizes, and also provides toll blending of proprietary formulations as well as contract and custom packaging of dry powders (bags 2-65 lbs, totes 300-3000 lbs).

Product overview

Therm-O-Rock West is a manufacturer and supplier of expanded vermiculite and perlite mineral products, operating as a toll processing services company. The core product portfolio consists of Vermiculite (a hydrous phyllosilicate mineral with high temperature resistance and water holding capacity) and Perlite (an amorphous volcanic glass with thermal resistance and absorption properties). These are offered alongside Toll Processing/blending services for proprietary formulations and Contract & Custom Packaging services for dry powders. Products serve agriculture, construction, animal feed, and inert carrier industries, with standard, private label, and custom specifications available.

Differentiator

Problem solved

Functional benefit

Products and services

• Vermiculite A hydrous phyllosilicate mineral that expands dramatically when heated, appearing as small gold or light brown popcorn-like pieces. Valued for being inert, with high temperature resistance and water holding capacity. Available in standard or private label packaging with standard or custom particle sizes. Serves agriculture, construction, animal feed, and inert carrier industries.
• Perlite An amorphous volcanic glass with high water content that expands like popcorn when heated, creating tiny bubble structures. Used to reduce weight in construction materials and packaging, provides aeration and moisture retention in agriculture, with high absorption and thermal resistance. Available in expanded form with standard or custom packaging and custom blends.
• Toll Processing Toll blending services for proprietary formulations according to customer specifications. Includes silos for receiving raw materials by truck or rail, secure handling of proprietary formulas, and experience across agriculture, construction, animal feed, and inert carriers markets.
• Contract & Custom Packaging Packaging services for dry powders including standard and custom packaging of customer products. Available in bags from 2 to 65 pounds and totes from 300 to 3000 pounds.

Quantifiable outcome

• Typical lead time of 2 weeks for standard products

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• EP Minerals (Imerys): Imerys' EP Minerals subsidiary is one of the largest North American producers of expanded perlite and diatomaceous earth products with overlapping applications in construction, filtration, and horticulture — directly comparable to TOR-W's perlite/vermiculite manufacturing business.
• Dicaperl Minerals Corp: Dicaperl manufactures expanded perlite products for construction, industrial, and horticultural uses — directly overlapping TOR-W's perlite expansion business, customer segments, and toll-processing service model.
• The Schundler Company: Schundler is a long-established U.S. perlite producer serving construction, horticulture, and filtration markets with comparable expanded perlite grades — a direct comparable in size, product mix, and customer base.
• Strong-Lite Products (Sun Gro Horticulture): Strong-Lite produces perlite-based horticultural and construction growing media under Sun Gro, directly competing with TOR-W in horticulture-grade perlite and soil amendment end markets.
• Whittemore Company: Whittemore produces vermiculite and perlite-based products for industrial, horticultural, and insulation uses — a directly comparable family-run specialty mineral manufacturer with similar scale and product mix.
• Texas Perlite Company: Texas Perlite operates perlite expansion facilities serving construction, industrial, and agricultural customers in the southern U.S. — a direct regional competitor with a similar toll-processing and bulk-packaging model.
• American Perlite Products: American Perlite Products is a perlite mining and expansion company supplying construction, filtration, and horticulture customers — directly comparable in product line and customer segments to TOR-W.

Broad incumbents

• Imerys: Imerys is a global industrial minerals major with a perlite franchise through EP Minerals and a much broader specialty-minerals portfolio, offering overlapping but far wider capabilities than TOR-W.

Emerging players

• Profile Products: Profile Products manufactures soil amendments, erosion control, and horticulture substrates including perlite and vermiculite blends — partially overlapping TOR-W's agriculture and construction customer base from a finished-goods angle.
• Oasis Grower Solutions: Oasis supplies growing media and propagation products to horticulture and hydroponics — overlapping with TOR-W's perlite-for-horticulture use case, though positioned more downstream in the value chain.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xx.com/ThermORockWest
• Facebookfacebook.com/343906639041514
• LinkedInlinkedin.com/company/therm-o-rock-west-inc.

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

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 Therm-O-Rock West