BASF’s insulation system SLENTEX® makes Hokushu Premium Passive House more energy efficient

Posted on October 28, 2016

Tokyo, Japan – October 28, 2016 – SLENTEX®, BASF’s insulation material, has been adopted by Hokushu for external thermal insulation in its new Passive House in Japan. The high-performance insulation material, based on silica aerogel, not only significantly improves energy efficiency, but also demonstrates excellent fireresistance performance. Compared to conventional insulation materials, it provides better thermal insulation even at lower thickness. As such, SLENTEX enables flexible design and high energy efficiency.


The Hokushu Premium Passive House is designed to achieve energy savings of more than 60 percent according to the standards of the Building Energy Index (BEI). With state-of-the-art insulation materials from BASF and indoor climate control solutions, together with an established Passive House design, indoor temperature fluctuation is minimized and this contributes to high energy efficiency.


“Projects such as the Hokushu Premium Passive House are excellent examples of how we collaborate with industry leaders to showcase the potential contribution of insulation systems such as SLENTEX, aiming for a zero energy house,” said Andy Postlethwaite, Senior Vice President, Performance Materials Asia Pacific, BASF.


“Our priority is ‘Comfort, Health and Energy saving’ for customers. We would like to achieve an ideal thermal environment using the architectural approach, such as insulation technology with minimum reliance on machinery and equipment. SLENTEX is a great material that can achieve high thermal insulation in a thin wall,” said Hideki Ishihara, Institute Manager, Archtechtural institute, Hokushu.


Construction of the Hokushu Premium Passive House is scheduled to start from October 31, 2016.


About HOKUSHU Co., Ltd.


HOKUSHU Co., Ltd. works to spread high-performance housing for the health and comfort of their customers, is continually developing technologies for the future. HOKUSHU Co., Ltd. holds as their mission the provision of beautiful, zero-energy homes that stand the test of time based on the concepts of 'good aging' and 'authenticity', and the spread of high-performance materials across numerous regions. Further information at


About BASF


At BASF, we create chemistry for a sustainable future. We combine economic success with environmental protection and social responsibility. The approximately 112,000 employees in the BASF Group work on contributing to the success of our customers in nearly all sectors and almost every country in the world. Our portfolio is organized into five segments: Chemicals, Performance Products, Functional Materials & Solutions, Agricultural Solutions and Oil & Gas. BASF generated sales of more than €70 billion in 2015. BASF shares are traded on the stock exchanges in Frankfurt (BAS), London (BFA) and Zurich (AN). Further information at

Categories: Media Releases