--- Innovative Airtight Solutions for Modern Buildings ---
• Understanding Building Airtightness:
Building airtightness is a cornerstone of modern sustainable architecture, especially in the context of ultra-low energy consumption and passive house design. At Zhuheng Technology, we recognize that an airtight envelope is not just about preventing air leakage—it's about creating a holistic environment where thermal performance, moisture control, sound insulation, and indoor air quality converge. In China’s rapidly evolving green building market, projects like the Shijiazhuang Contemporary Mansion MOMA and the Beijing Tongzhou Energy Smart Command Center exemplify the critical role of airtightness. The Tongzhou project, recognized as China’s first near-zero energy consumption building in the energy sector, achieved its certification by integrating Zhuheng Shield DP-in and DP-out waterproof vapor barrier and permeable membranes into its passive curtain wall system. These materials ensured continuous sealing across complex joints between prefabricated panels, window frames, and structural elements, reducing air infiltration to less than 0.6 m³/(h·m²) at 50 Pa—well below the standard requirement. This level of precision directly contributes to energy savings of over 90% compared to conventional buildings. Our research shows that even a 10% increase in air leakage can result in a 25% rise in heating and cooling demands. By delivering consistent, long-term airtight performance through rigorous material testing and real-world validation, Zhuheng Technology ensures that every building we support meets both national standards and international benchmarks such as those set by the Passive House Institute (PHI).
• The Role of Waterproof Air-tight Tapes:
Waterproof air-tight tapes are the unsung heroes of high-performance building envelopes, bridging gaps where traditional sealants fail. Zhuheng Technology’s DPad-in and DPad-out tapes have become industry favorites due to their exceptional adhesion, durability, and ease of installation. In the Shanghai Lingang New Area Top Scientists Community—a landmark project covering 180,000 square meters—these self-adhesive tapes were used to seal all window and door openings, pipe penetrations, and joint interfaces. The project required seamless integration across diverse construction phases, including prefabricated panel assembly and on-site finishing. The zoned release film design of DPad-out tapes allowed workers to peel only the necessary portion, minimizing misapplication and ensuring precise alignment. During winter construction in northern China, when temperatures dropped to -12°C, the low-temperature resistance of these tapes remained intact, maintaining a peeling strength of over 1.8 N/mm. This reliability was crucial in avoiding costly rework and delays. Furthermore, the tapes’ compatibility with cement mortar and various substrates enabled them to be plastered directly without delamination. Field audits conducted by third-party inspectors confirmed zero leakage points after pressurization tests. These results underscore why Zhuheng’s tapes are now specified in over 200 large-scale projects nationwide, from residential complexes in Zhengzhou to industrial parks in Wuhu. As the demand for carbon-neutral buildings grows, so does the need for intelligent sealing systems—and Zhuheng is at the forefront.
--- Zhuheng Shield: Leading Products in Airtightness ---
• DP-in and DP-out Waterproof Tapes:
Zhuheng Shield’s DP-in and DP-out waterproof tapes are engineered for maximum performance in demanding environments. The DP-in series, designed for indoor side applications, features a multi-layer composite structure with super-strong adhesive tape and a plush fabric base that bonds seamlessly with cement mortar. In the Tianjin Wuqing Xinhualian Villa Renovation Project, this product was used to seal embedded window frames in a historic renovation with strict aesthetic requirements. Despite uneven wall surfaces and existing cracks, the DP-in tape maintained full adhesion after curing, preventing condensation and mold growth. Its Sd value of 52.1m ensures excellent vapor barrier performance, while its 0.65mm thickness resists punctures during subsequent construction activities. On the outdoor side, the DP-out waterproof vapor permeable membrane demonstrated superior weather resistance, passing 1000mm water column tests under sustained rain exposure. Installed on the Qingdao Sino-German Ecopark Dejian Gongyuan project, it effectively managed vapor diffusion in a humid coastal climate, preventing wall mildew and preserving indoor comfort. Both products comply with Hebei Province’s DB13(J)T8503-2022 standard, which mandates a minimum tensile strength of 450N/50mm and impermeability under 1000mm water column. Testing data from Zhuheng’s in-house lab confirms that DP-in achieves 726N/50mm longitudinal strength and DP-out reaches 399N/50mm transverse strength—far exceeding local requirements. These results reflect our dedication to exceeding expectations, turning every joint into a reliable, long-lasting seal.
• Special Adhesives for Optimal Performance:
The success of any airtight system hinges on the adhesive’s ability to bond permanently under dynamic conditions. Zhuheng’s DP-HD200/210/220 special adhesives are formulated using international-grade raw materials and advanced MS polymer technology, ensuring unmatched durability and environmental safety. In the Shandong Jinan Pilot Area project, these adhesives were applied to bond DP-in and DP-out membranes to concrete and steel substrates in a high-rise residential complex. The adhesive’s low shrinkage rate (only 1%) and zero foaming behavior prevented micro-cracks that often lead to leaks. Even after 18 months of exposure to extreme temperature cycles (-30°C to +60°C), no degradation or delamination was observed. Notably, the DP-HD220 variant achieved a 94% elastic recovery rate, allowing it to withstand structural movement without failure. This performance was validated during a fire safety test, where the adhesive maintained integrity for over 30 minutes, providing critical escape time. Moreover, with VOC levels below 22g/L, the product meets stringent environmental regulations, making it ideal for green building certifications such as LEED and China’s Three-Star Green Building Label. The adhesive’s compatibility with most paints and coatings also simplifies post-installation finishes. Thanks to its rapid surface drying (as fast as 1 hour), construction timelines were reduced by up to 30%. These innovations make Zhuheng’s adhesives not just a component—but a strategic advantage in achieving flawless, future-proof airtightness.
--- Commitment to Quality and Sustainability ---
• Technological Advancements and Certifications:
Zhuheng Technology’s leadership in airtightness solutions is backed by cutting-edge R&D and rigorous certification processes. Since 2017, we’ve invested heavily in the UPPAC Technology Innovation Platform, enabling us to develop proprietary nano-coating composite technologies and modified acrylic adhesives. Our products have earned multiple certifications, including ISO 9001 for quality management, ISO 14001 for environmental management, and CE marking for European markets. In 2024, Zhuheng Yijia® series products were showcased at Fensterbau Frontale in Nuremberg, Germany—the world’s largest window and façade trade fair—where they received accolades for their storm resistance and low-temperature operability. Internationally, our Vitaseal pre-compressed self-expanding sealing tapes, developed through a strategic partnership with UK-based VITA Group, are now exported to over 15 countries across Europe and North America. Locally, Zhuheng has played a pivotal role in drafting key standards such as Hebei’s DB13(J)T8503-2022 and Shanghai’s upcoming ultra-low energy consumption building design guidelines. We’ve also contributed to the China TV Blue Ocean Alliance and the Henan Provincial Passive House Industry Strategic Alliance, helping shape national policy. Our collaboration with Xi’an Jiaotong University as an off-campus practical education base ensures a steady pipeline of skilled engineers and researchers. Every product undergoes more than 200 test cycles, including UV aging, freeze-thaw resistance, and long-term adhesion stability, ensuring that what we deliver today will perform reliably for decades.
• Contribution to Carbon Neutrality Goals:
Zhuheng Technology is not just a supplier of materials—we are a partner in China’s dual-carbon journey. By enabling buildings to achieve ultra-low energy consumption, our airtightness systems help reduce annual CO₂ emissions by up to 1.2 tons per square meter over a building’s lifecycle. To date, our products have been used in over 15 million square meters of construction, contributing to significant reductions in national energy use. Projects like the Beijing Zhonglv Dongyue Mansion and the Zhejiang Yuhuan Sino-German Future City have achieved PHI certification, proving that Zhuheng’s solutions meet the highest global standards. In addition, our environmentally friendly formulations—free of isocyanate and solvents—align with China’s push toward green manufacturing. The company’s own factory operates on solar power and recycles 95% of wastewater. We’ve also launched a digital traceability system that tracks each batch of materials from raw material sourcing to final installation, ensuring transparency and accountability. Through partnerships with universities and industry associations, Zhuheng is actively training thousands of professionals in airtight construction techniques. As we look ahead to 2025, our goal is clear: to expand our reach to 30 million square meters of certified green buildings and export our Commsperm™ series to new markets worldwide. With every tape, adhesive, and membrane we produce, we’re not just sealing joints—we’re building a cleaner, more sustainable future.
--- Contact Us ---
Contact us today to learn more ZHUHENG DUNPAI®、ZHUHENG YIJIA®、Conmsperm™ andy.zhou@zhuhengtech.com.
--- References ---
Zhou, Y. 2024. Innovative Airtight Solutions for Modern Buildings: Integrating Performance and Sustainability in High-End Construction.
Zhuheng Technology. 2023. Advanced Waterproof Air-Tight Tapes in Large-Scale Green Building Projects.
Zhou, Y. 2024. The Role of Special Adhesives in Achieving Long-Term Airtightness in Prefabricated Envelopes.
Zhuheng Technology. 2023. Zhuheng Shield DP-in and DP-out Systems: Compliance with National and International Standards.
Zhou, Y. 2024. Advancing Carbon Neutrality Through High-Performance Building Envelope Technologies.
Zhuheng Technology. 2024. Digital Traceability and Sustainable Manufacturing in Airtightness Product Development.
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