Mutenka House Co., Ltd.

Objective: Our company has spent many years researching the feasibility of developing and manufacturing building materials without using chemical substances that are harmful to the body, such as synthetic adhesives and chemical building materials. We repeatedly tested natural materials used as building materials to develop and manufacture building materials that use as few chemical substances as possible. Based on the concept of a place where building materials can coexist with nature, we hope to create building materials that anyone can use normally and safely for 100 years. Established: 2001 Employees: 34 Business Activities: Development, manufacturing, and sales of building materials, such as wall, floor, roof, and insulation material made from natural materials Major Products: Wall, roof, and floor materials, fixtures, metal fittings, etc. Scale of Sales: We wholesale materials to 160 distributors throughout Japan. Certificates: Mutenka House, The World's Most Natural Homes, Edible Homes (registered trademarks), Roof(patent) Industry Positioning: Our company's natural building materials are differentiating products which sharply distinguish us from competitors. Message from Director Shinichi Yoshioka: Why is plaster Japan's number one building material for walls? It is a traditional material that has been used around the world since ancient times. It has also been used in Japan for castles and storehouses for centuries, and it has both superior fire resistance and durability. In contrast, diatomaceous soil, which is also sold as a building material for walls, has long been used as a raw material for earthen braziers and fire-resistant bricks, but it actually has no history of use as a material for walls at all. The material itself does not harden, so it must be hardened by mixing it with adhesives. If the adhesive with which it is mixed degrades, there is the possibility that the diatomaceous soil will come apart. A comfortable space cannot be made with such a wall material. Plaster is a material that will harden on its own via chemical changes without adding adhesives, becoming limestone. Plaster is a 100% natural material, which no other material can claim, and it helps make healthy homes a reality.