保証防水工業所 Company Profile

We protect important structures for the long term with the most suitable construction methods! We are a waterproofing company with approximately 3,000 completed projects!

Our company is a specialized firm in protective construction based in Yokohama, established in 1963. We believe that the most important aspect of protective construction, exemplified by waterproofing work, lies in the optimal execution of the best methods. Therefore, we are constantly engaged in the development of construction methods with an eye toward the future, and we plan and execute customized optimal solutions tailored to the purpose, usage, and natural environment of each building. The optimal waterproofing not only extends the lifespan of the building and reduces the renovation burden for our customers but also contributes to improving indoor environments and energy-saving effects through our expertise in ventilation methods, thereby reducing the environmental impact on the community.