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Energy-saving, sustainable and fire-safe insulation

When it comes to mechanical HVAC/R and piping systems, we offer the construction industry energy-saving, sustainable and fire-safe insulation solutions with very high mechanical strength.

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Construction PE foam insulation
Insulation sheet tubes

Construction insulation

Investing in sustainable savings

In an average household, heating, hot water and cooling account for half of all energy consumption. A similar pattern exists in offices, hotels, factories, terminals, educational buildings, supermarkets and many other utility buildings. The quality of the insulation used must therefore meet the highest standards.

Insulation for Stadium soccer
Insulation in food factory

Important for insulation in construction:

  • Energy efficiency
  • Condensation problems
  • Damage to insulation
  • Durability
  • Fire safety

Investing in efficient Thermaflex solutions pays off, particularly in the long run. It delivers sustainable energy savings while reducing living expenses and management costs.

Cost-effective insulation products and systems

We offer engineers, contractors, installers and building owners state-of-the-art flexible pre-insulated piping systems and insulation products. Our insulation solutions offer:

  • Cost-effective long-term thermal insulation results.
  • Very high mechanical strength for efficient installation and a long service life.
  • Excellent fire resistance and minimal smoke generation.
  • Resistance to extreme temperature variations.
  • Fully recyclable foams (Cradle to Cradle for ThermaSmart Pro), highly suitable for LEED and BREEAM building projects.
  • Extensive support for designers and specifiers during installation (training, tools, manuals).


Thermaflex is affiliated with the following national and international organisations:

Abok Russian Engineers for heating, ventilation, air conditioning, heat supply and construction thermophysics
VIB-Ondernemers in het thermisch isolatiebedrijf
NVKL Organisation for cooling and refrigeration technique
FSK Fachverband Schaumkunststoffe & Polyurethane
VDKF Verband Deutscher Kaelte Klima Fachbetriebe
DNGB Deutsche Gesellschaft für Nachhaltiges Bauen
OOI opleidings- en ontwikkelingsfonds voor de isolatiebranche

Advice and Support

Engineering support Thermaflex insulation

Engineering and Support

Our insulation engineers help you select and calculate the right solution for your thermal insulation challenge.

Engineering and Support
Co-development Thermaflex insulation flexalen


As an innovative supplier, we think along with you. Our engineers and solution developers can work closely with you to develop new solutions that meet your wishes and requirements.

Training installation Thermaflex

Installation Training

Trained installers deliver better results, within the scheduled installation time and with less waste and damage. We offer a complete training portfolio for installers of PE foam.

Installation Training
Cezary Naliwajek
Cezary Naliwajek

Sales & Marketing Manager Insulation Europe

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September 22, 2023 in Projects

Dive Into The World Of Sustainable Excellence

By Thomas van den Groenendaal, Jelmar van Beek - September 22, 2023Thermaflex Flexalen flexible pre-insulated pipe networks are installed around the world. We provide the expertise and support to make…
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August 30, 2023 in Blog

Grow together with Thermaflex!

By Patrick Spijkers - August 30, 2023 Celebrating 30 years of dedication and leadership at Thermaflex! In this interview, Patrick Spijkers, Flexalen Bussiness Unit Manger, shared his story at Thermaflex,…
Read More