--- The Importance of Airtightness in Building Construction ---
• Understanding Building Airtightness:
Building airtightness refers to the ability of a structure to prevent uncontrolled air infiltration and exfiltration through its envelope. In modern construction—especially in ultra-low energy consumption buildings—this is not merely a technical detail but a fundamental requirement for achieving long-term thermal performance, indoor comfort, and environmental sustainability. Poor airtightness leads to significant energy loss, condensation within walls, mold growth, and compromised indoor air quality. According to national standards such as DB13(J)T8503-2022 (Hebei Province’s Design Standard for Energy Efficiency of Ultra-Low Energy Consumption Residential Buildings), airtightness must be maintained at or below 0.6 air changes per hour at 50 Pa (ACH50), which demands precision in material selection and installation. Zhuheng Technology’s DP-in and DP-out series membranes are engineered to meet and exceed these benchmarks. Their multi-layer composite structures, combined with high-performance adhesives like DP-HD220, ensure continuous sealing even at complex joints such as window frames, pipe penetrations, and wall-to-wall interfaces. The company’s deep understanding of building physics enables them to design products that balance vapor permeability and barrier functions—critical for managing moisture migration without trapping it inside the wall assembly. This scientific approach ensures that every tape and membrane contributes to a holistic airtight system rather than just a temporary seal.
• The Role of Airtight Materials in Energy Efficiency:
Airtight materials are central to the success of passive house and near-zero energy buildings. When properly installed, they reduce heating and cooling loads by up to 70%, significantly lowering operational carbon emissions. For example, in Beijing’s Tongzhou Energy Smart Command Center—the first near-zero energy consumption building in China’s energy sector—Zhuheng Shield’s adhesive-applied DP-in and DP-out membranes were used across the entire façade. This project achieved a verified 0.4 ACH50, well below the standard threshold, thanks to the seamless integration of Zhuheng’s airtight system. The membranes’ ability to withstand structural movement, maintain adhesion under temperature fluctuations (-40°C to +80°C), and resist UV degradation over time ensured long-term performance. Moreover, their compatibility with both cement-based plasters and prefabricated panels made them ideal for diverse construction methods. By eliminating air leakage paths, these materials allow mechanical ventilation systems to operate efficiently, maintaining fresh indoor air while minimizing energy waste. As global climate goals push for net-zero emissions by 2060, the role of airtightness materials like those from Zhuheng becomes increasingly vital—not only for compliance but for real-world impact on energy savings and occupant well-being.
--- Zhuheng Technology: A Leader in Airtight Solutions ---
• Innovative Products for Ultra-Low Energy Consumption Buildings:
Hebei Zhuheng Technology Co., Ltd. has emerged as a pioneer in the development of advanced airtightness materials, particularly tailored for China’s evolving ultra-low energy consumption building market. Since its founding in 2017, the company has invested heavily in R&D, international collaboration, and standard-setting. One of its flagship innovations is the DPad-in and DPad-out self-adhesive tapes, which feature zoned release films and exposed edges for precise application—reducing human error and improving construction speed. These tapes are designed for use in both residential and commercial projects, including Shanghai Lingang New Area’s Top Scientists Community, where over 180,000 square meters of buildings were constructed using Zhuheng’s full-system solution. The company also developed the ES Series specifically for hot-summer/cold-winter climates, offering enhanced resistance to moisture and temperature extremes. Their Vitaseal pre-compressed self-expanding sealing tapes, imported via strategic partnership with UK-based VITA Group, provide superior thermal insulation and soundproofing, making them ideal for high-performance curtain walls and prefabricated structures. Additionally, Zhuheng’s DP-HD200/210/220 special adhesives are solvent-free, low-VOC, and maintain strong bonding even at -10°C, enabling winter construction in northern regions. These innovations reflect a commitment to solving real-world challenges—from poor workmanship to harsh weather—proving that technology and user-centric design can coexist in sustainable construction.
• Commitment to Quality and Responsibility:
Zhuheng Technology’s mission extends beyond product innovation—it embodies a deep sense of responsibility toward the environment, the industry, and end-users. The company has been recognized as a High-Tech Enterprise and an executive director unit of multiple provincial associations, including the Hebei Ultra-Low Energy Consumption Building Industry Association. It actively participates in drafting local standards such as DB13(J)T8506-2022 and contributes to national guidelines like CECS standards. This leadership role underscores its credibility and technical authority. Furthermore, Zhuheng is an off-campus practical education base for Xi’an Jiaotong University and collaborates with Huanghe Science and Technology College to train future engineers in building science. Its products have been tested and certified under GB/T and ISO standards, with data showing Sd values exceeding 50m for vapor barrier membranes and air permeability below 1.0mm/s—far surpassing basic requirements. Most notably, Zhuheng has been involved in more than 200 large-scale projects nationwide, covering all major climate zones, from Shijiazhuang’s Contemporary Mansion MOMA to Qingdao Sino-German Ecopark. These projects consistently achieve PHI (Passive House Institute) certification and green building three-star ratings. Such widespread adoption is not accidental—it results from rigorous quality control, transparent testing, and a culture of accountability. Zhuheng doesn’t just sell tapes; it delivers trusted systems that stand the test of time.
--- Key Features of Trustworthy Waterproof Airtight Tapes ---
• Durability and Performance Under Extreme Conditions:
The true measure of a waterproof airtight tape lies in its ability to perform under extreme conditions—whether freezing winters, scorching summers, or heavy rainfall. Zhuheng’s DPad-out Waterproof Vapor Permeable Membrane Tape, for instance, demonstrates exceptional resilience. With a water vapor transmission rate of 22.2g/(m²·24h) and an Sd value of 2.0m, it allows moisture to escape while blocking external water ingress—preventing condensation and mildew. Its elongation at break exceeds 90% in both directions, enabling it to stretch and recover without cracking during structural movement. Field tests conducted in Tianjin Wuqing Xinhualian Villa Renovation Project confirmed that the tape remained intact after 3 years of exposure to severe cold and frequent rain, with no delamination or peeling observed. Similarly, the DP-HD220 special adhesive maintains a 94% elastic recovery rate after stretching, ensuring long-term sealing stability. Even in high-altitude areas like Zhejiang Yuhuan Sino-German Future City, where wind speeds reach 12 m/s and temperatures fluctuate widely, Zhuheng’s products have shown zero failures. The tapes’ aging resistance, verified through accelerated UV and thermal cycling tests, ensures durability beyond the typical 25-year lifespan of most building envelopes. These performance metrics are not theoretical—they are validated in real-world applications, proving that Zhuheng’s tapes are built not just to last, but to perform flawlessly under pressure. This reliability is what makes them the preferred choice for premium developers and architects seeking peace of mind in their construction decisions.
--- Case Studies: Successful Applications of Zhuheng Tapes ---
• Notable Projects Utilizing Zhuheng Products:
One of the most compelling case studies is the Shanghai Lingang New Area Top Scientists Community, a landmark project spanning 180,000 square meters. As part of Shanghai’s vision to become a hub for innovation, this community was designed to meet the strictest ultra-low energy consumption standards. Zhuheng’s full airtight system—including DP-in vapor barrier membranes, DPad-out vapor permeable tapes, and DP-HD220 adhesive—was deployed across all residential units and common areas. The result? A verified ACH50 of 0.35, far below the 0.6 threshold. The system’s seamless integration allowed for faster construction timelines, reduced labor costs, and eliminated post-construction rework. Another standout example is Shijiazhuang Lihang Guantang and Tangyue Mansion, a 110,000-square-meter residential complex that became a benchmark for Hebei Province. Here, Zhuheng’s self-adhesive DPad-in and DPad-out tapes were used in conjunction with pre-compressed Vitaseal 600 tapes for window and pipe joints. Despite the region’s harsh winters and frequent snowfall, no leaks or condensation issues were reported during the first two heating seasons. Even in challenging environments like Zhengzhou Foreign Language School, where school buildings required rapid deployment and high hygiene standards, Zhuheng’s low-VOC, non-toxic materials ensured safe installation without compromising performance. These projects collectively demonstrate how Zhuheng’s solutions deliver measurable outcomes: energy savings, improved indoor air quality, and long-term durability—all backed by real-world evidence.
• Customer Testimonials and Industry Recognition:
Industry professionals consistently praise Zhuheng Technology for its technical excellence and customer support. At the Beijing Zhonglv Dongyue Mansion project, the lead architect noted, “Zhuheng’s tapes eliminated the risk of joint failure we’ve seen with other brands. Their zoned release film design made installation intuitive, even for less experienced crews.” Similarly, a contractor from Qingdao Sino-German Ecopark stated, “We saved nearly 30% in labor time compared to traditional methods because the tapes stick instantly and don’t require curing.” These testimonials are echoed in formal recognition: Zhuheng has been named a ‘High-Quality Supplier’ by multiple provincial housing authorities and received awards from the China TV Blue Ocean Industry Alliance. In 2024, the company exhibited at Fensterbau Frontale in Nuremberg, Germany, marking its international debut and signaling growing global confidence in Chinese-made airtightness solutions. More recently, the company’s NF30 and NF05 nano-coated membranes were selected for a national high-quality engineering project in Anhui Wuhu, where they passed rigorous third-party audits. These accolades are not just marketing claims—they reflect genuine trust from clients who rely on Zhuheng’s products to meet stringent certifications like PHI and Green Building Three-Star. In short, Zhuheng isn’t just a supplier; it’s a partner in building a sustainable future.
--- Contact Us ---
We welcome your inquiries: andy.zhou@zhuhengtech.com.
--- References ---
Zhuheng Technology, 2023, Development and Application of Advanced Airtightness Materials in Ultra-Low Energy Consumption Buildings
Zhou, Andy, 2022, Sealing Performance and Durability of Self-Adhesive Membranes in Extreme Climate Zones
Hebei Provincial Housing Authority, 2022, Design Standard for Energy Efficiency of Ultra-Low Energy Consumption Residential Buildings (DB13(J)T8503-2022)
VITA Group & Zhuheng Technology, 2021, Integrated Airtight Systems for High-Performance Curtain Walls
China Construction Science Institute, 2023, Evaluation of Air Permeability and Vapor Barrier Properties in Building Envelope Components
Xi’an Jiaotong University & Zhuheng Technology, 2024, Practical Training Programs in Sustainable Building Physics and Airtightness Engineering
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