Verified Nov 2026
Thermal & Fluid Systems
·
Stanhope, New Jersey
·
Since 1875
Isolatek International makes passive fire protection materials, including spray-applied, intumescent, and rigid board fire-resistive products for structural steel. The company is headquartered in Stanhope, New Jersey, and was founded in 1875. It reports an estimated 100-200 employees and an estimated revenue band of $10-50 million. Its materials serve steel construction, healthcare, transportation, and petrochemical facilities. In June 2026 it was acquired by Catchment Capital from SK Capital Partners.
Isolatek International at a glance
Revenue
$10-50M
Est. band
Employees
100-200
Founded
1875
Headquarters
Stanhope, New Jersey
Certifications
ISO 9001
Import activity
276
Industries
Automotive
Electric Vehicles
Construction
Medical
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
276
Named foreign suppliers
32
Top origins
Italy · Panama · South Korea · Spain
Shared foreign counterparties do not establish that these companies buy from Isolatek International.
What this tells a buyer
The most recent development on record is the June 2026 completion of Isolatek's sale from SK Capital Partners to Catchment Capital, which was reported by both firms.
The company is certified to ISO 9001 and offers custom fireproofing design, code-compliant installation support, and materials tested to international building code requirements.
Isolatek is privately held, and in 2026 it opened a new Kansas City plant, in addition to its manufacturing sites across the United States.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
151 years in operation (founded 1875).
Holds ISO 9001 certification(s) per public sources.
Overview
Isolatek International makes passive fire protection materials, including spray-applied, intumescent, and rigid board fire-resistive products for structural steel. The company is headquartered in Stanhope, New Jersey, and was founded in 1875. It reports an estimated 100-200 employees and an estimated revenue band of $10-50 million. Its materials serve steel construction, healthcare, transportation, and petrochemical facilities. In June 2026 it was acquired by Catchment Capital from SK Capital Partners.
At a glance
Attribute | Detail |
|---|---|
Founded | 1875 |
Headquarters | Stanhope, New Jersey |
Employees | 100-200 |
Revenue | $10-50M (estimated) |
Primary capability | Thermal & Fluid Systems |
Certifications | ISO 9001 |
What Isolatek International makes
The company is certified to ISO 9001 and offers custom fireproofing design, code-compliant installation support, and materials tested to international building code requirements.
Products and capabilities described on the company's own site include Battery, Steel (source: isolatek.com).
Certifications
Isolatek International is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 9001 — isolatek.com
Trade and customs footprint
The most recent development on record is the June 2026 completion of Isolatek's sale from SK Capital Partners to Catchment Capital, which was reported by both firms. US customs bill-of-lading records list 276 inbound shipments across 32 foreign suppliers, with top origins including Italy · Panama · South Korea · Spain.
Latest developments
2026-09-30 — We are pleased to welcome two new members to the Isolatek team at Isolatek’s new Kansas City Plant: Jesse Fitzgerald and Carrie Cook. | Isolatek International (linkedin.com)
2026-07-29 — Building on 150 years of fireproofing innovation. | Isolatek International (linkedin.com)
2026-06-10 — SK Capital Completes the Sale of Isolatek International to Catchment Capital | SK Capital (skcapitalpartners.com)
2026-06-09 — Catchment Capital Completes Acquisition of Isolatek International from SK Capital Partners - Isolatek International (isolatek.com)
2026-04-22 — Catchment Adds SK Capital-Backed Isolatek - The Deal (thedeal.com)
2026-04-22 — Catchment Capital to Acquire Isolatek International from SK Capital Partners - Isolatek International (isolatek.com)
Facilities
Isolatek International is headquartered in Stanhope, New Jersey. Public sources also reference these locations:
Stanhope, New Jersey — linkedin.com
Company details
Isolatek is privately held, and in 2026 it opened a new Kansas City plant, in addition to its manufacturing sites across the United States. Isolatek International was founded in 1875, has an estimated 100-200 employees, and is headquartered in Stanhope, New Jersey. On the LightSource stability read it is rated "Established & active": 151 years in operation (founded 1875). Holds ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Isolatek International make?
Isolatek International makes passive fire protection materials, including spray-applied, intumescent, and rigid board fire-resistive products for structural steel. The company is headquartered in Stanhope, New Jersey, and was founded in 1875. It reports an estimated 100-200 employees and an estimated revenue band of $10-50 million. Its materials serve steel construction, healthcare, transportation, and petrochemical facilities. In June 2026 it was acquired by Catchment Capital from SK Capital Partners.
Where is Isolatek International headquartered?
Isolatek International is headquartered in Stanhope, New Jersey (41 Furnace Street, Stanhope, New Jersey, 07874).
When was Isolatek International founded?
Isolatek International was founded in 1875.
How big is Isolatek International?
Isolatek International has an estimated 100-200 employees, with revenue in the $10-50M range (estimated).
What certifications does Isolatek International hold?
Isolatek International lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does Isolatek International import from overseas suppliers?
US customs bill-of-lading records show 276 inbound shipments for Isolatek International, with top origins including Italy · Panama · South Korea · Spain.
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Last verified Nov 2026. Is this your company? Request a correction.
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