About Thermaflex

What we do

We produce thermal insulation solutions, systems and networks for the distribution of water, heat, cooling and air. Our products are based on polyethylene (PE) foam (insulation products) and polybutene (PB) with PE (Flexalen pre-insulated pipes). We have more than 45 years of experience with insulation. Together with our clients, we work to deliver solutions that meet their needs and make us proud!

Insulation PE foam

Who we are

We are a team of more than 250 people, all of whom are passionate about helping our customers achieve their goals. We proudly develop and deliver innovative and sustainable solutions for a wide range of industries and projects.

What makes us different

When it comes to insulation properties, fire safety, human comfort and the lifespan of your systems, you rely on your insulation supplier. To ensure that your systems are free of condensation, that you achieve your energy-saving targets and that residents are protected, the performance of the insulation products used must really match the promised specifications.

That’s where we make a difference:
Where our competitors promise a lot, we delíver a lot!

Our goal is to make a positive contribution to our environment by delivering sustainable insulation solutions that help minimise energy waste and optimise the use of our natural resources.

Hans de HaasCEO Thermaflex International

45 years of experience in insulation!

Thermaflex was founded by Leendert Baars in Waalwijk, the Netherlands in 1976. Since then, we have grown to become the international company we are today, serving customers on all continents!

Our history
1976 founding Thermaflex

We care about sustainability

Thermaflex cares about the environment. Our goal is to contribute to energy savings and a lower CO2 footprint by developing innovative insulation concepts.

We take responsibility


June 13, 2022 in Ducting systems, Heating & cooling networks, Insulated piping systems

Thermaflex at SHK Essen

At SHK 2022 (6 to 9 September 2022 at Messe Essen in Germany) Thermaflex will show its solutions for heating networks, heatpumps and HRV systems. Visit Thermaflex in hall 1,…
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May 9, 2022 in Flexalen prefabrications, Geothermal Energy, Heating & cooling networks, Insulated piping systems, Local & district heating network, News

Flexalen PHC: the next step in district heating networks

As the market leader in the pre-insulated polymer pipe industry, we have developed a completely new product that makes building heating networks easier, faster, and cheaper! In the coming years,…
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Why Thermaflex?

We develop and supply high-quality technical solutions for insulation, protection, shock resistance and soundproofing.

Customised solutions
100% recyclable insulation products
Project management and support