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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


January 5, 2023 in News

Reduce heating costs by correctly insulating your heating system

Reading time: 3 minutes With the ongoing energy crisis, heating costs have skyrocketed, and winter is just around the corner. Now, it's time to save energy and ensure that your…
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December 6, 2022 in Flexalen 600, Flexalen Multiline, Flexalen prefabrications, Flexalen ProtecTube, Flexalen PU, Heating & cooling networks, Insulated piping systems, News

Thermaflex at WarmteNetwerk Congrestival

The event for the Dutch heating chain Stichting Warmtenetwerk organises the Warmte congres 'Congrestival' on 8 December 2022. An inspiring and interactive event for and by everyone in the heat…
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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