"20-Year-Old Skate Park Surface Renovation" Sanuki City Nagao Skate Park
A weathered concrete park that has been neglected for 20 years has been revived into a skate park that is even smoother than newly built parks.
The "Nagao Skate Park" in Sanuki City, Kagawa Prefecture, was established 20 years ago. Built at a significant size of approximately 900m2, it became a well-known park for skaters in western Japan long before skateboarding became a trend. However, it has recently gained notoriety for its rough surface, with some people even referring to it as a "grater" due to the coarse concrete surface. Sanuki City allocated a budget and commissioned Tsumura Manufacturing Co., Ltd. and Willby Co., Ltd., which provide unique renovation methods. Using a large American grinding machine, the rough concrete surface was shaved down, and the sunken areas were filled with a special resin made in the USA that can be used outdoors, creating a smooth surface. Additionally, a penetrating surface hardener called "Seal Hard" and a water absorption inhibitor named "Aqua Pel Plus" were applied to enhance wear resistance and rainwater resistance. Finally, a test run on a skateboard was conducted to check for proper grip. The surface not only returned to a smooth finish but was also completed with long-lasting wear and rain resistance! A video showing the condition after the renovation has been uploaded to YouTube. With the permission of the sk8 on channel, we will introduce it in the related video below.
basic information
Seal Hard Skate Park Renovation Specifications - Surface Concrete Grinding: The uneven surface will be leveled using a large grinder made by American company STI. - Joint Leveling Grinding: The raised joint areas will be ground down using a medium grinder to level the height and eliminate the step. - Joint Filling Repair: Joints that were 10-20mm wide will be filled with American-made fast-setting repair mortar. - Surface Depressions Resin Filling Repair: Areas that remain depressed after grinding will be filled with a special American-made resin. - Surface Concrete Finish Grinding: Finish grinding will be done to create a smooth surface. - Application of Penetrating Surface Hardener Seal Hard: This will enhance wear resistance and create a surface that can withstand wear from skateboarding. - Application of Penetrating Water Absorption Inhibitor AquaPel Plus: This will suppress rainwater penetration and prevent surface deterioration due to rain. - Skateboard Test Run Confirmation: The finished surface will be tested with a skateboard to confirm that it provides the necessary grip for skateboarding. The penetrating concrete surface hardener was weak against rain and had low effectiveness outdoors. Therefore, by combining diamond grinding with the water absorption inhibitor "AquaPel Plus," we have eliminated this weakness and developed a method specifically for skate parks, which is currently under patent application.
Price information
The price varies depending on the roughness of the surface and the area of construction. Please contact us for more details.
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Model number/Brand name
Seal Hard Skate Park Renovation Specifications
Applications/Examples of results
Skate parks that have been resurfaced with the same "Seal Hard Skate Park Renovation Specification": - Higashi Kanazawa Sports Square Skateboard Park (Kanazawa City, Ishikawa Prefecture) - NiX Street Sports Park (Toyama City, Toyama Prefecture) - Sasebo Park Skateboard Park (Sasebo City, Nagasaki Prefecture) - Sumida Skateboard Park (Sumida Ward, Tokyo) Although not renovations, skate parks that have been finished with the "Seal Hard Skate Park New Construction Specification": - Green Park Daemon Skateboard Square (Imizu City, Toyama Prefecture) - Tiger Luck Skateboard Park Nagai (Osaka City, Osaka Prefecture) - Toyo Carbon Urban Sports Park Marugame (Marugame City, Kagawa Prefecture) - Nitto Shinko Stadium Maruoka Skateboard Square (Sakai City, Fukui Prefecture) - Ishioka Skateboard Park (Ishioka City, Ibaraki Prefecture)
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CAD data（1）
| Model number | overview | File |
|---|---|---|
| Standard Drawing for Skate Park Surface Specifications | The "Seal Hard Skate Park Specification" is a construction method provided in the following steps 1 to 4. [Patent pending] ◆1. Concrete grinding (for renovation only) ◆2. Concrete polishing ◆3. Penetrating surface hardener Seal Hard ◆4. Water absorption suppressor (water repellent) Aquapel Plus This is a pavement specification created based on past achievements. Please feel free to copy and use it when designing future skate parks. |
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Distributors
The Wilby Building Materials Division is a professional group specializing in sports facility construction and flooring finishing work. 【Building Materials Division】 ● Sports Facility Business: Centered in Hokuriku and Niigata, we engage in specialized construction related to sports facilities such as swimming pools and gymnasiums, as well as flooring work for various facilities. ● Building Sales Business: We provide high-value flooring products that are not available in conventional offerings, such as scratch-resistant flooring "Cattina" and natural wood composite flooring "Alpito." ● Good Floor Business: As the domestic importer of concrete chemical products from the U.S. company LATICRETE, we offer various concrete flooring solutions, including "Seal Hard." ● Environmental Business: We propose and sell installation services for products such as "Painted Insulation Material Gain," "Cool Roof," "Seismic Ceiling WILL-TEC Method," and "Nano Zone Coat." 【Construction Division】 We construct numerous low-cost steel frame buildings for logistics facilities such as distribution centers and warehouses, as well as commercial facilities like supermarkets, home centers, drugstores, and fashion malls throughout Japan. We provide consistent services tailored to customer needs, including land development, design, and comprehensive construction.
