Health is people + house.

This scheme represents the definition of a PAC healthy house.

健康住宅 健=人+建

健 Ken This is a Japanese kanji. 

健康 is health.  

健 is also health.

健 is  人+建。 

人=people.  建=house.

Do you understand?

That is,

Health = people + house.

In building a house, health must realize the health of the people who live in it and the health of the house itself.

Human health is the mind and body.

House health is   durability in the sense that it does not rot   and durability in the sense that it can be used for a long time.

耐久性 and 耐用性 Both are Durability in English.

In this figure

It shows that the health of the human body and the health of the building not rotting can be achieved by the PAC method.

PAC工法= the PAC method

As explained so far, the PAC method uses flowing air and natural energy such as sun and cold air at night to realize the warmth and coolness of the house and improve the physical health of the people who live in it.

At the same time, it keeps the moisture of the building in a well-balanced and moderate manner, and protects structural materials such as foundations and beams from rot.

And if the floor plan is not the so-called ○ LDK floor plan, which is full of private rooms and the family tends to fall apart, but the floor plan of the expanding space, there will be more casual contact with the family, which will greatly useful for the mental health of the family.

広がり空間= the expanding space

And in the future, even if the number of families changes significantly due to the independence of children or the death of parents, we can flexibly respond to the future life.


Natural materials are a natural premise of a healthy home.

☆☆☆☆ 4 star building materials are not suitable for healthy housing.

☆☆☆☆ 4 Star building materials simply have a small amount of formaldehyde, so-called formalin, contained in the adhesive used for building materials.

☆☆☆☆ 4 star building materials are used in many homes because they are safe, but they are not used in PAC homes.


Domestic solid wood

Real plaster,

which does not use chemical glue, but uses seaweed glue.


It is a paper or cloth wallpaper, not a vinyl wallpaper, and the glue is natural glue, not chemical.

No drugs are used to prevent termites.

Boric acid.

Boric acid is harmful to insects such as cockroaches, but harmless to mammals such as humans, dogs and cats.


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