Seamless construction method (waterproofing)

High-strength adhesion coating waterproofing
High-strength adhesion coating waterproofing to protect your valuable buildings with up to 20 years of waterproof warranty. It can be applied to steel sheet roofs and flat roofs. Seamless coating of buildings with a coating film waterproofing that is extremely strong, durable, and abrasion resistant.
It is a tough waterproof coating film that is resistant to earthquakes.

See also here for details.

詳しくはこちらもご覧ください。

防水工事シームレス工法で屋根・屋上の劣化や雨漏りを修理【雨漏り診断士在籍】|シロキコーポレーション株式会社https://kankyo-shiroki.com/product/seamless.html

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