This time, we will talk about the durability and maintenance of "cosmetic slate", which has been used mainly in detached houses in recent years.
But before that, please join us as we will unravel the history of "makeup slate".
In fact, there are many types of roofs.
Roofs are broadly divided into two categories.
One is "sloped roof"
A pitched roof is a roof that is slanted, represented by the roof of a detached house.
The other is not "flat roof" **Rikuyane**, but in the construction industry, it is read as **Rokuyane**.
Let's go back to the "decorative slate" used for "gradient roofs".
In recent years, the most used material for pitched roofs is a material called "decorative slate".
Slate is also divided into two types: "natural slate" and "cosmetic slate".
Natural slate is thin slices of natural stone such as slate.
From the Edo period to the Meiji period, the number of Western-style buildings increased, and it was a roofing material that replaced Japan tiles.
Natural slate is now a high-end material, and it is extremely rare for people to use it in ordinary houses.
"Cosmetic slate" was created in place of natural slate.
Decorative slate (= slate tiles) is an artificial roofing material made by mixing cement and fiber.
Product names such as "color vest" and "colonial" have become synonymous.
As an aside, it is the same as calling adhesives "bonds" or "cemedines".
At the time when cosmetic slate became popular, asbestos (asbestos) was mixed in.
However, in October 2004, the manufacture and import of roofing materials and exterior wall building materials were banned, and by 2006, products containing more than 0.1% were virtually completely banned.
The reasons for using asbestos were "not rotten", "not easy to deteriorate", "light and strong", and "insulating".
These characteristics are compared to the non-asbestos cosmetic slate currently used to improve environmental problems.
"Then~! Isn't it okay to have asbestos?" I think, right?
As some of you may know, in fact, it has been completely banned in European countries since around 1990.
Regulations were progressing in Japan step by step, but in 2005 it became a social problem! The so-called "Kubota problem" has led to a major change in society's perception of asbestos from a "material to be managed" to a "material that should not be used."
It is also true that many people have suffered from diseases that are said to be closely related to asbestos, such as mesothelioma and lung cancer.
Japan's initial response tends to be a little late, but once decided, there is a good idea to "do it thoroughly!"
I believe that knowing not only the color and shape of the roof, but also the "history of decorative slate" will lead to proper building maintenance.
Next time, let me talk about the maintenance of makeup slate.
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