Thermaflex International

Name

Thermaflex International

Legal name

Thermaflex International Holding B.V.

Website

https://thermaflex.com

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

251–500 employees

Ownership category

akta.pro rank

Product category

Technical Insulation and Pre-insulated Piping Systems

NAICS

Plastics Pipe and Pipe Fitting Manufacturing (326122)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

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

akta.pro secondary industry

Industrial Process & Chemical-Resistant Pipe Systems (CPVC/PVDF/PP) (IMANADAF)

Keywords

• Pre-insulated piping systems
• Technical insulation products
• District heating networks
• HVAC insulation solutions
• Marine insulation systems

Headquarters

HQ city

Waalwijk

HQ country

Netherlands

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Technical Insulation Product Sales: Sale of PE foam insulation products (ThermaSmart PRO, ThermaEco, ThermaCompact, ProFoam, etc.) primarily to construction, HVAC, industrial, and marine customers. Revenue is project-driven and volume-based.
2. Pre-insulated Piping System Sales: Sale of Flexalen pre-insulated piping product lines (600, 600 HP, PU, PHC, Multiline, prefabrications) for district heating, cooling, geothermal, and potable water applications. Includes system accessories and tools.
3. Engineering and Technical Support Services: Technical support services including product selection, network design, thermal optimization, installation training, and co-development of custom solutions. These services support and differentiate product sales.
4. Pipe Pre-Insulation Service: Insulation service for third-party pipe manufacturers, enabling them to offer insulated pipes to their customers without changing their production process.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels7 records

Core offering

Thermaflex International manufactures and sells technical insulation and pre-insulated piping systems for heating, cooling, ventilation, and water distribution applications. Its portfolio comprises PE foam insulation products (ThermaSmart®, ThermaEco®, Ultra M, ThermaCompact, ThermaRod, ProFoam), PB-1-based pre-insulated piping (Flexalen® 600, 600 HP, PU, PHC, Multiline), Protectube, TQ-Air® pre-insulated ducting, and supporting accessories and tools. The company also provides engineering, installation training, co-development, and a Pipe Pre-Insulation service for third-party pipe producers, targeting construction, district heating/cooling, marine, industrial, infrastructure, OEM, and data-center customers in 45+ countries.

Product overview

Thermaflex International offers technical insulation and pre-insulated piping solutions for heating, cooling, ventilation, and water distribution applications. The product portfolio comprises two main categories: (1) Pre-insulated piping products under the Flexalen® brand including Flexalen® 600, Flexalen® 600 HP, Flexalen® PU, Flexalen® Prefabrications, Flexalen® PHC, Flexalen® Multiline, Protectube, and TQ-Air® for ducting; and (2) Technical insulation products under the ThermaSmart® and ThermaEco® brands including ThermaSmart® PRO, ThermaSmart® Marine, ThermaSmart® ENEV, ThermaSmart® ENEV-Q, ThermaEco® FRZ HF, ThermaEco® ZZ, Ultra M, ThermaCompact, ThermaRod, and ProFoam. The Flexalen® pre-insulated piping systems use flexible PB-1 piping material for easy installation around obstacles, while the insulation products primarily use polyethylene foam and elastomeric foam technologies. Supporting products include heating cables, system accessories, and specialized tools.

Differentiator

Problem solved

Functional benefit

Brands

• Flexalen: Pre-insulated pipe product lines including Flexalen 600, Flexalen 600 HP, Flexalen PU, Flexalen PHC, Flexalen Multiline, and prefabrications
• ThermaSmart
• ThermaEco
• TQ-Air
• Protectube

Products and services

• Flexalen® 600 Flexible pre-insulated pipe system using PB-1 (polybutylene-1) for efficient distribution of hot or cold liquids in heating and cooling networks; for utilities, contractors, and installers.
• Flexalen® 600 HP High-pressure variant of Flexalen 600 pre-insulated piping for demanding heating and cooling applications.
• Flexalen® PU Polyurethane-insulated piping solution for enhanced thermal performance in heating and cooling networks.
• Flexalen® Prefabrications Factory-prefabricated pre-insulated pipe components and fittings that reduce on-site installation time.
• Flexalen® PHC Pre-insulated piping solution for high-performance heating and cooling applications.
• Flexalen® Multiline Multi-line pre-insulated piping system for complex heating and cooling network configurations.
• Protectube Protective pre-insulated tubing solution combining mechanical protection with thermal insulation.
• TQ-Air® Pre-insulated ducting system for heat recovery ventilation (HRV) that reduces energy loss, prevents condensation, and lowers noise.
• ThermaSmart® PRO Direct-extruded closed-cell polyethylene foam insulation for HVAC and sanitary installations, providing condensation control, energy efficiency, and system protection.
• ThermaSmart® Marine Marine-certified PE foam insulation solution for shipbuilding and offshore applications requiring durability in marine environments.
• ThermaSmart® ENEV Polyethylene foam insulation meeting ENEV standards for energy efficiency requirements in residential and commercial buildings.
• ThermaSmart® ENEV-Q Quick-installation variant of ThermaSmart ENEV for efficient project execution.
• ThermaEco® FRZ HF Flexible elastomeric foam insulation for refrigeration and cooling applications.
• ThermaEco® ZZ Elastomeric foam insulation solution providing thermal and acoustic performance.
• Ultra M Mineral wool-based insulation solution for high-temperature industrial applications.
• ThermaCompact Compact PE foam insulation solution designed for space-constrained installations.
• ThermaRod Rod-based PE foam insulation product for pipe wrapping applications.
• ProFoam PE spray foam insulation solution for custom installation applications.
• Heating Cables Electric heating cables for pipe frost protection and temperature maintenance.
• Flexalen® System Accessories Complete range of system accessories supporting installation of Flexalen pre-insulated piping systems.
• Flexalen® Tools Specialized tools required for installation of Flexalen pre-insulated piping systems.
• Insulation Tools & Accessories Comprehensive range of tools and accessories used for installing Thermaflex insulation products.
• Protection Profile Customized PE Foam Profiles Customised PE foam profiles for shock absorption and product protection in packaging and equipment manufacturing applications.
• Engineering & Technical Support Services Technical support services covering product selection, network design, thermal optimization, and installation support for construction, district heating/cooling, marine, and industrial customers.
• Installation Training Installer training portfolio including ThermaSmart Marine certification programs for shipyard and HVAC installers.
• Co-Development Services Co-development of customised thermal insulation and piping solutions for unique applications and OEM integration.
• Pipe Pre-Insulation Service Insulation service applied to third-party pipe manufacturers' products, enabling them to offer insulated pipes without changing their own production process.

Quantifiable outcome

• 1,600 kW district heating capacity delivered for waste-to-energy powered network in Azores
• +2 more outcomes

Named customers13 records

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered core and minor.

• PSWIP (Polskie Stowarzyszenie Wykonawców Izolacji Przemysłowych)coreStrategic or Co-development Partner · 3 March 2026Thermaflex joined PSWIP, a Polish non-profit association uniting key companies and professionals in the technical insulation sector. PSWIP works closely with industry partners to promote professional standards and knowledge exchange. Key alignment areas include advancing technical development and quality in insulation, supporting education and training of insulation specialists, participating in industry conferences and events, and providing accessible information about technical insulation. PSWIP is also a member of FESI (European Federation of Associations of Insulation Contractors).
• Holland America Line, Princess Cruises, Seabourn, Virgin VoyagescoreChannel Partner/ Reseller/ DistributorFour cruise lines under Carnival Corporation signed preferred supplier agreements establishing Thermaflex insulation products as the preferred choice for future marine insulation applications. This covers newbuild and retrofit projects across their fleets. The agreements followed proven installation track records on existing vessels and were facilitated by the certified installer network Thermaflex has developed for the marine segment.
• FESI (European Federation of Associations of Insulation Contractors)minorOthersFESI is the European federation connecting national insulation contractor associations. PSWIP, the Polish association Thermaflex joined, is a member of FESI, linking Thermaflex's industry engagement to the broader European insulation community.
• Latitude 1 Maritime (Singapore)coreTechnology or IntegrationLatitude 1 Maritime's marine team successfully completed practical training and certification for ThermaSmart Marine installation at Seatrium shipyard in Singapore (23-27 February 2026). The certification enables Latitude 1 Maritime to serve as a trained and certified installer for Thermaflex's marine insulation products in the Asia-Pacific shipyard market.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Georg Fischer (GF Piping Systems): Swiss manufacturer of plastic and metal piping systems serving industrial, building, and utility applications; competes with Thermaflex's Flexalen portfolio in plastic piping for fluid distribution.
• Armacell: Luxembourg-based global leader in flexible elastomeric foam insulation (Armaflex) for HVAC, refrigeration, and industrial applications; overlaps directly with Thermaflex's ThermaSmart and ThermaEco insulation ranges in technical insulation markets.
• Uponor: Finnish provider of plumbing, heating, and pre-insulated pipe systems, competing with Thermaflex in residential, commercial, and district heating applications across Europe.
• Logstor: Danish manufacturer of pre-insulated pipe systems for district heating and cooling networks, the closest head-to-head competitor to Thermaflex's Flexalen PB-1 product line in DHC infrastructure projects across Europe.
• Brugg Pipes: Swiss specialist in pre-insulated pipe systems for district heating and cooling, a focused direct peer sharing Thermaflex's core DHC and energy-transition value proposition.
• REHAU: German polymer-based building solutions group with a strong pre-insulated district heating pipe portfolio, competing directly with Thermaflex in European DHC and building services piping.

Broad incumbents

• Kingspan Group: Irish building envelope and insulation giant with high-performance insulation boards and pipe insulation; a much larger incumbent competing with Thermaflex in building insulation specifications.
• Wienerberger: Austrian building materials group with plastic pipe and fittings offerings for building services; overlaps with Thermaflex in European plumbing and heating piping markets as part of a broader materials portfolio.
• Rockwool: Danish stone wool insulation leader serving HVAC, industrial, marine, and building markets; competes with Thermaflex in technical insulation specifications at scale.
• Saint-Gobain (Isover): French building materials group whose Isover brand supplies technical and HVAC insulation across Europe, overlapping with Thermaflex in construction and industrial insulation segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@ThermaflexInt
• Facebookfacebook.com/thermaflexinternational
• LinkedInlinkedin.com/company/thermaflex-international-holding
• Xx.com/ThermaflexNL

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries3 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 Thermaflex International