Q&A
Q：材料は不燃材料でしょうか。
A：耐火力はありますが、不燃材料ではございません。現在不燃開発中。
Q: How can I install PU STONE?
A: Please refer to this video for installation instructions.
Q: What are the advantages of PU STONE?
A: PU STONE offers numerous advantages, including:
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Durability (30–50 years)
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Lightweight
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Thermal insulation
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Waterproof and UV resistance
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High strength (Shore hardness 40)
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Acid and moisture resistance
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Weather resistance (−40°C to 120°C)
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Suitable for hot spring baths, saunas, and fully submerged areas such as pools
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Easy installation and transportation
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Reduces labor costs and construction time
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Its lightweight nature makes it suitable for earthquake-resistant applications
Q: What is used to attach PU STONE?
A: In most cases, adhesive alone is sufficient. However, for added safety and to prevent potential detachment, we recommend securing it with finish nails as well.
Q: Does the product have F☆☆☆☆ certification?
A: Polyurethane products are generally not subject to F☆☆☆☆ certification. As long as the material does not contain urea resin or melamine resin, certification is not required.
Additionally, formaldehyde has not been detected.
(Confirmed by the Japan Building Materials Testing Center.)
Q: Can PU STONE and natural stone sheets be used outdoors or indoors?
A: They are suitable for both outdoor and indoor use.
Q: What types of base materials are suitable for installation?
A: Smooth surface materials such as plywood, gypsum board, concrete, glass, and acrylic.
Q: Will the surface of PU STONE get scratched if scraped?
A: It is resistant to scratches under normal use unless forcibly damaged. Even if the coating comes off, it can be repainted.
Q: Does the surface paint on PU STONE come off over time?
A: The color may fade with age, but it can be repainted.
Q: What is the delivery time?
A: If the item is in stock, it can be shipped within 3 days at the earliest.
If out of stock, the delivery time is approximately 3 weeks to 45 days (excluding uncontrollable situations such as COVID-19).