The DAIKEN Group's CSR Basic Policy


Contribute to the realization of a sustainable society by creating values shared with society through activities for "Ecology" and "Improvements in the quality of space"


  1. With CSR and CSV* as the key axes, we will improve our corporate value and enhance our competitiveness to realize GP25.
  2. Using CSR as an activity to enhance our ability to respond to and earn the trust of society, we will systematically pursue CSR with our responses to the environment, society, and governance as key axes.
  3. Positioning CSV* as one of our management strategies, we encourage activities voluntarily and actively through the whole business process.

*DAIKEN's CSV is defined as finding solutions to social issues through the provision of common values capitalizing on DAIKEN's uniqueness.

CSV Theme

  1. Building a sustainable society
  2. Providing secure, safe, and comfortable spaces
  3. Comprehensive use of wood building materials— encouraging the use of cascading

CSR Activity Promotion System

CSR Activity Promotion System

Medium-Term CSR Activity Plan (for fiscal 2017-2019)

  • This action plan stipulates activities to promote compliance and other basic CSR activities on a group-wide basis.
  • Based on the core subjects of ISO 26000, key items and initiatives to be addressed are extracted for each of the following six themes: (1) organizational governance, (2) human rights, (3) labor practices, (4) fair operating practices, (5) consumer issues, and (6) community involvement and development.
  • Our flexibility is enhanced by just expressing the medium-term targets in broad and qualitative terms.
  • Based on this plan, each CSR promotion department will design and implement its own plan for specific activities.
  • In the environmental area, we need to set out more technical and specific contents in an activity plan. We have therefore formulated our Medium-Term Environmental Plan separately.

Medium-Term CSR Activity Plan

The 5th Medium-Term Environmental Plan (for fiscal 2017-2019)

  • This activity plan is specifically designed for the environment. The 1st Medium-Term Environmental Plan was formulated in 2002.
  • Before determining activity themes, their priorities were defined based on the results of evaluating the impact these activities have on the global environment, society, and management (risks and opportunities).
  • Based on this action plan, each department will establish and implement its own targets and specific plans for each period.

The 5th Medium-Term Environmental Plan

For the Environment

Reducing waste and recycling

Current rate of recycling waste 91%

DAIKEN Group is striving to reduce and recycle waste in an effort to realize a sustainable society.

The waste emissions in the DAIKEN Group were 49,600 tons in fiscal 2017, and its recycling rate*1 was 91.1%. We continue to improve the recycling rate.

*1 Recycling rate = Amount of recycled resources/Total emission of waste x 100(%), Amount of recycled resources = Valuable + Use of materials + Use of heat

Breakdown of waste processing

Effective utilization of recycled resources

Current rate of using recycled resources on products 64.2%

The DAIKEN Group is committed to the effective use of wood resources and untapped resources in developing and producing its products, as part of its efforts to realize a recycle-oriented society,
In fiscal 2017, the DAIKEN Group’s total resource input was 323,000 tons with the ratio of recycled resources used standing at 64.2%.*

We will continue to maintain and improve this ratio.

*Ratio of recycled resources = Recycled resources used in producing products / total resources used x 100(%), recycled resources used in producing products = Recycled resources + unused resources

1. Recycle of woods

Fully using wood resources by refining its manufacturing technologies

The DAIKEN Group promotes the recycling of woods by promoting wood planting, appropriate use of forest trees, and recycling products that have been used once.

In particular, we have been working on the effective use of wood resources for more than 50 years. As a result, we developed manufacturing technologies to use chips and residual wood offcuts generated by demolishing buildings, which had been wasted before. The recycling rate of insulation board was increased to 90%. The product is lightweight and superior in heat insulation, moisture absorption-desorption, and cushioning properties, and its quality is also highly evaluated by the market.

Insulation board

Insulation board

Wood fiberboard uses waste wood generated from the demolition of buildings as ingredients, which is a procurement item specified in the Green Purchasing Law.



Wood fiberboard uses residual wood offcuts generated from the demolition of buildings as ingredients, which is a procurement item specified in the Act on Promotion of Procurement of Eco-Friendly Goods and Services by the State and Other Entities.

Shifting the energy source in the manufacturing process to a wood biomass boiler

DAIKEN Corporation additionally installed a wood biomass boiler, which uses wood chips generated from construction wood waste, in its Okayama factory, which started operation from July 2016.

In the Okayama factory, there was a problem where the energy consumption of boiler used for generating heating steam in the drying process was high. To address the problem, measures included the installation of a wood biomass boiler in 2007, and energy sources used for drying process using steam are now fully shifted to biomass energy. This will reduce annual CO2 emissions by approximately 40,000 tons compared to that of 2006.

2. Effective use of untapped resources

Commercializing mineral resources that were not used before with unique technologies

The DAIKEN Group commercializes byproducts produced in ironmaking, such as slag and shirasu (volcanic ash), which were not used before, with special processing to use them as ingredients. We are working towards a recyclable society by suppressing consumption of natural resources.

Further research is conducted to enable the product to demonstrate superior performance not only from an environmental perspective but also from a functional perspective, including non-combustibility and durability. It offers wide applications from the home domain to the industry domain, thereby contributing to society even more.

Mineral Fiber Ceiling Board

Mineral Fiber Ceiling Board

The rock wool sound-absorbing board is manufactured using slag wool (fibered slag, which is a by-product produced in ironmaking) as raw material.

Volcanic Silicate Board

Volcanic Silicate Board

The inorganic panel is manufactured by making effective use of slag wool, a recycled material, and shirasu (volcanic soil), an untapped resource.

Contribution for the promotion of earthquake resistance and local revitalization by ecological based materials

DAIKEN Corporation released Dai-Lite, the world’s first material using shirasu as the main raw material, in 1997. It has grown and come to be renowned as a leading brand of inorganic bearing surface members intended for wooden houses and promoted anti-seismic houses.

Increasing the share of products using shirasu not only suppresses the consumption of natural resources but also contributes to local revitalization. For example, in the area in Kyushu where we collected shirasu, which is also a cause of debris flow, soil was improved, and now the area is filled with paddy fields. This is how we help revitalize local areas.