It prevents high summer temperatures from entering indoors and keeps winter heating from escaping outside.
In European architecture, many openings such as windows and entrances, which serve as the boundary between the interior and exterior of a home, utilize wooden frames. This is due to the high thermal insulation properties of wood (thermal conductivity of 0.12), its soothing qualities that evoke a sense of comfort, and an understanding of the importance of protecting the Earth's natural environment. By using organic wooden frames, heat from high summer temperatures is not transmitted indoors, and winter heating is not lost to the outside. Breathing wood is truly a living material. Just as temples and shrines endure, wood continues to live on through proper maintenance. 【Features】 ○ Air tightness, thermal insulation, sound insulation → No worries about heat escaping from windows or condensation, equipped with performance comparable to walls. ○ Durability → Wooden frames do not burn away and are less likely to be damaged by heat, making them more fire-resistant than aluminum frames. ○ Health and comfort → Wood has moisture-regulating properties and is a user-friendly material that provides a sense of tranquility. ○ Design and color → Wooden frames come with various opening methods and a wide range of window designs. For more details, please contact us or download the catalog.
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【Performance】 ○Fire Resistance →Certified to comply with the fire protection equipment regulations set forth by the Building Standards Act. ○Adhesive: Aica Aibon AUH-1 →Type: MDI-based isocyanate compound →Regulations: Hazardous materials, Class 4, Class 4 petroleum products, Hazard level 3 →Remarks: No PCB heavy metals or formaldehyde used. →Formaldehyde emission grade: F☆☆☆☆ (JISK6806) 【Standard Specifications】 ○Use of local timber from each region (e.g., Aomori Hiba) ○Use of wood with excellent strength and workability (Red Pine, Western Pine) ○Form →Finger jointed →Made with laminated wood ○Fittings →Manufactured by GU (Germany) →Manufactured by IPA (Denmark) ○Paint: Manufactured by Libos (Germany) ○Gaskets →Manufactured by GU (Germany) →Manufactured by IPA (Denmark) →Manufactured by DAFA (Denmark) ○Decorative lattice: Single-sided lattice ●For more details, please contact us or download the catalog.
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JOYWOOD's Kawakami Manufacturing produces and constructs wooden sashes and school partitions. Since about 100 years ago, when modern facilities were not available, we have been handcrafting various building products and have continued to pass down that expertise. We reflect the wishes of designers and clients in our products, delivering wooden sashes that meet their satisfaction.