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North America
Performance Polymers

SLENTEX®(PU) – The high-performance insulating material for the highest demands


BASF SLENTEX® is NON-COMBUSTIBLE HIGH-PERFORMACE AEROGEL insulation blanket, commercially available.  SLENTEX® can solve insulation continuity problems in areas with limited space or with curved and irregular surfaces.  Suggested uses are foundations, slab edges/under slab, and exterior wall applications/penetration in the USA as well as Canada. 


The benefits of SLENTEX® for the construction industry

  • SLENTEX® is non-combustible (in accordance with ASTM E136 and CAN/ULC-S114)
  • Mineral-based product 
  • Low declared thermal conductivity 19 mW/m·K

    R-value of 7.9 Hr·ft2·°F/BTU per inch for 25 – 50% slimmer thermal insulation systems

  • Open to diffusion (68 Perms)
  • Amendable to flexible processing – suitable for specialized insulation requirements

SLENTEX® is a flexible high-performance inorganic aerogel insulation suitable for both new build and renovation.  SLENTEX® exhibits excellent thermal insulation allowing for a high degree of design freedom and enabling very slim construction systems for insulation.  Whether historically protected facades, building elements, or uneven brickwork, SLENTEX® can be applied flexibly where other insulation materials typically reach their limits.

What's new?

Read our exciting story on how famous American architect Ray Kappe decided to use SLENTEX® for a private home in Berlin.

BASF_Corpus_Gertler Residence

To all owners/ developers, architects/ engineers and contractors looking for the next generation of high-performance building materials, this technology should definitely be in your specifications! Developers wishing to maximize rentable square footage, architects trying to solve a difficult thermal envelope challenge and contractors looking to tackle difficult to insulate areas in the field will all benefit from aerogel insulation. Because this new high-performance insulation material, SLENTEX®, offers totally new design scope, as it can be used impactfully in areas where conventional insulation materials have reached their limits. SLENTEX® is the next generation of insulation based on an inorganic aerogel in mat form. With a thermal conductivity of declared 19 mW/m·K (R-value of 7.9 Hr·ft2·°F/BTU per inch), the insulation material displays outstanding energy efficiency – while being non-combustible in accordance with ASTM E136 & CAN/ULC-S114. SLENTEX® also delivers customized climate management by being water-repellent (i.e. super hydrophobic) while water vapor permeable (68 Perms).  In addition, its flexible mineral fiber structure permits a great deal of scope of design and creativity.


ICC-ES Evaluation Report | ICC-ES Listing Reports available online 

 SLENTEX® is a non-combustible high-performance aerogel insulation blanket, and the ICC-ES evaluation report ESR-4281 provides guidance to code officials faced with approving the use of SLENTEX® under these codes.  The evaluation report is available online at


Architectural Guide Specifications available for Architects and Material Specifiers in the United States and Canada


Excellent Thermal Insulation across a Wide Range of Temperatures  

SLENTEX® is not only an excellent thermal insulation material for construction applications, but can be used in a variety of consumer and transportation applications where superior R-value across a wide range of temperature is strongly desired for applications with space constraint.

Flexible Thermal Insulation Solution

Tailor-made Solutions

Tailor-made for individual needs: We support our customers in developing application-oriented solutions.

ROMA Dämmsysteme, Buttenwiesen, Referenzobjekt "Terra Tec", Bludenz-Bings, Österreich


Public buildings, industrial and office buildings play a key role in our economic and social environment. With our products for the construction sector, we help to make commercial buildings energy-efficient, more durable and economic.


Building construction and use account for about 30 percent of global energy consumption. Sustainable construction becomes increasingly important for climate protection and resource conservation. Our products and development work contribute to both cost-effective and eco-friendly building construction and design.
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Construction products and materials for infrastructure pave the way for efficient and sustainable design in- and outdoors. We offer a large range of products for different applications tailored to your needs. With our polyurethanes, special foams, engineering plastics and additives, we contribute to a sustainable future.

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