--- Why Choose Zhuheng Technology for Airtight Solutions? ---
• Leader in Airtightness Materials Industry:
Zhuheng Technology, founded in 2017 and headquartered in Shijiazhuang, Hebei Province, has emerged as a national leader in the ultra-low energy consumption building airtightness materials industry. With over seven years of dedicated R&D and innovation, Zhuheng has successfully developed and deployed more than 200 large-scale ultra-low energy consumption building projects across China, including landmark projects such as the Beijing Tongzhou Energy Smart Command Center—the first near-zero energy consumption building in China’s energy sector—and the Shanghai Lingang New Area Top Scientists Community, a benchmark project with a construction area of 180,000 square meters. These projects not only achieved dual certification from Germany’s Passive House Institute (PHI) and China’s Ministry of Housing and Urban-Rural Development but also demonstrated exceptional performance in thermal insulation, moisture control, and long-term durability. Zhuheng’s commitment to quality is evident in its status as a High-Tech Enterprise, a member of the Henan Provincial Passive Ultra-Low Energy Consumption Building Industry Technology Innovation Strategic Alliance, and a key contributor to the formulation of provincial standards like DB13(J)T8503-2022 and DB13(J)T8506-2022. The company’s strategic partnership with the UK-based VITA Group has enabled it to bring world-class Vitaseal pre-compressed self-expanding sealing tapes to the Chinese market, further strengthening its technical edge. By combining domestic innovation with global best practices, Zhuheng Technology delivers customized, high-performance solutions that meet the rigorous demands of modern sustainable architecture. Its mission—'Quality Determines the Future, Innovation Leads Development, Value Empowers Customers, Responsibility Prevails Over Interests'—is consistently reflected in real-world applications where every joint, seal, and membrane contributes to carbon peaking and neutrality goals.
--- Benefits of Using Waterproof Air-tight Tape ---
• Enhanced Energy Efficiency:
The use of high-performance waterproof air-tight tape, such as Zhuheng Shield’s DP-in and DP-out series, directly translates into measurable improvements in building energy efficiency. In the Shijiazhuang Contemporary Mansion MOMA project, one of Hebei Province’s residential benchmarks, the implementation of Zhuheng’s airtightness system reduced air infiltration by over 90% compared to conventional construction methods. This dramatic improvement significantly lowered heating and cooling loads, resulting in an estimated 40% reduction in annual energy consumption. Similarly, at the Shanghai Shiquan Community—a central urban redevelopment project with over 200,000 square meters of construction—Zhuheng’s vapor barrier and permeable membranes ensured a continuous airtight layer across all façades and joints. Independent testing confirmed that the building achieved an air leakage rate of just 0.6 m³/(m²·h) at 50 Pa, well below the stringent requirements of China’s ultra-low energy consumption standards. By preventing uncontrolled air movement, these tapes minimize heat loss in winter and reduce cool air escape in summer, directly contributing to lower operational costs and enhanced indoor thermal comfort. Moreover, the ability of Zhuheng’s DP-out breathable membranes to allow water vapor to escape while blocking liquid water prevents condensation within wall assemblies, which can otherwise lead to mold growth and structural degradation. This dual function ensures long-term thermal performance stability, making the building not only more energy-efficient but also healthier and safer for occupants. As global demand for net-zero buildings grows, such proven results underscore why contractors and developers are increasingly turning to Zhuheng for verified, data-backed airtightness solutions.
• Long-term Durability and Performance:
Zhuheng Technology’s waterproof air-tight tapes are engineered for longevity, backed by rigorous testing and real-world validation. In the Tianjin Wuqing Xinhualian Villa Renovation Project, self-adhesive DPad-in and DPad-out tapes were used to seal window and pipe joints in a historic renovation. Despite exposure to extreme temperature fluctuations—from -20°C in winter to over 40°C in summer—the tapes maintained full adhesion and integrity after three years of service, with no signs of cracking, delamination, or water intrusion. Laboratory tests confirm this resilience: Zhuheng’s DP-HD220 special adhesive exhibits a 94% elastic recovery rate and a mass loss rate of only 1%, even after prolonged aging. The company’s DP-in waterproof vapor barrier tape, with a tensile strength of 726 N/50mm and an Sd value of 52.1m, ensures that joints remain sealed under structural deformation and environmental stress. At the Qingdao Sino-German Ecopark Dejian Gongyuan, a green building innovation project, Zhuheng’s system was subjected to simulated heavy rain conditions equivalent to 1000mm water column for 20 hours—yet remained impermeable, meeting GB/T 328.10 standards. Even in challenging environments like coastal zones with high humidity and salt exposure, the tapes’ corrosion-resistant, UV-stable formulations prevent degradation. Furthermore, Zhuheng’s pre-compressed Vitaseal 600 tapes, with a fire performance class of B1 and VOC volatility rated as 'extremely low,' have been successfully used in multiple high-rise residential developments across Zhejiang and Jiangsu provinces, where safety and sustainability are paramount. These case studies demonstrate that Zhuheng’s products don’t just perform well initially—they deliver consistent, reliable performance over decades, reducing maintenance costs and extending the lifespan of buildings. This long-term reliability makes Zhuheng a trusted partner for developers aiming to build future-proof, resilient structures that stand the test of time.
--- How to Select the Right Airtight Tape for Your Project ---
• Consider Building Structure and Conditions:
Selecting the appropriate waterproof air-tight tape requires careful evaluation of the building’s structure, climate zone, and on-site conditions. For instance, in the Zhengzhou Foreign Language School project—a public educational facility located in a cold-winter climate zone—Zhuheng recommended the DP-in ES Series waterproof vapor barrier due to its superior low-temperature resistance and enhanced plasterability. This allowed seamless integration with concrete walls and steel frames, even during winter construction when temperatures dropped below -10°C. In contrast, for the Shanghai Pengrui Yunjing Bay project, a prefabricated modular community, Zhuheng’s self-adhesive DPad-out tapes were chosen for their fast application and compatibility with PC panel joints. Their zoned release film design minimized errors during installation, improving both speed and precision. For buildings with irregular or uneven surfaces, such as the Anhui Wuhu Construction Technology Industrial Park, adhesive-applied systems like DP-in with DP-HD200 special adhesive were preferred because they offer greater tolerance to surface imperfections and provide thicker, more durable bonding layers. On the other hand, projects requiring rapid assembly—like many wooden structure homes in Northeast China—benefit from self-adhesive tapes with instant bonding, such as the DPad-in1000B model, which can be installed at temperatures above -10°C. Additionally, pipe penetrations through external walls demand specialized solutions; Zhuheng’s GD-IN and GD-OUT sleeve sealing tapes were used in the Beijing Zhonglv Dongyue Mansion to ensure watertight seals around HVAC ducts and electrical conduits. By aligning product selection with site-specific challenges—including material type, joint geometry, weather exposure, and construction timeline—project teams can maximize performance, reduce rework, and ensure compliance with local standards such as Hebei’s DB13(J)T8503-2022 and Shanghai’s upcoming ultra-low energy consumption design guidelines.
• Evaluate Product Specifications and Standards:
To ensure optimal performance and regulatory compliance, it is essential to evaluate airtight tape specifications against recognized industry and local standards. Zhuheng Technology’s products consistently exceed benchmarks set by national and regional codes. For example, the DP-in waterproof vapor barrier tape meets and surpasses Hebei’s DB13(J)T8503-2022 requirements, with a tensile strength of 726 N/50mm (longitudinal), far exceeding the minimum 450 N/50mm for adhesive-applied types. Its Sd value of 52.1m exceeds the required 30m, ensuring excellent vapor barrier performance. Similarly, the DP-out waterproof vapor permeable membrane achieves a water vapor transmission rate of 1.7×10⁻⁵ g/(m²·s·Pa), well within the ≤4.0×10⁻⁵ limit specified in the National Standard Atlas 16J908-8. The 180° peeling strength of 1.9 N/mm for DP-in tapes also exceeds the 0.4 kN/m threshold in CECS standards. For self-adhesive options, Zhuheng’s DPad-in tapes achieve a peeling strength of 2.4 N/mm, significantly higher than the 0.4 kN/m minimum. These metrics are not just theoretical—they have been validated in real projects. At the Shandong Jinan Pilot Area, the entire airtightness system was audited by third-party inspectors, confirming full compliance with both national and provincial standards. Furthermore, Zhuheng’s participation in drafting standards like the ‘Technical Specification for Application of Building Airtightness Materials’ ensures that its products are designed to meet evolving regulatory expectations. By choosing Zhuheng, project managers gain access to products whose performance is not only tested under controlled lab conditions but also proven in diverse climates and building types nationwide. This adherence to standards reduces legal risks, streamlines approvals, and guarantees that the final building will meet or exceed energy efficiency targets.
--- Contact Us ---
We has extensive experience in Industry Field. Contact us for professional advice:ZHUHENG DUNPAI®、ZHUHENG YIJIA®、Conmsperm™ andy.zhou@zhuhengtech.com.
--- References ---
Zhou, Y. 2023. Enhancing Building Airtightness with Advanced Sealing Technologies: Case Studies from China's Ultra-Low Energy Consumption Projects.
Zhuheng Technology. 2022. High-Performance Airtightness Materials for Sustainable Construction: Technical Innovations and Real-World Applications.
Vita Group & Zhuheng Technology. 2021. Global Collaboration in Passive House Solutions: The Integration of Vitaseal Pre-Compressed Tapes in Chinese Green Buildings.
Hebei Provincial Housing Authority. 2022. DB13(J)T8503-2022 Technical Code for Application of Airtightness Materials in Low-Energy Buildings.
China Ministry of Housing and Urban-Rural Development. 2020. National Standard Atlas 16J908-8: Guidelines for Airtightness and Vapor Barrier Systems in Residential Buildings.
Shanghai Lingang New Area Development Bureau. 2023. Ultra-Low Energy Consumption Building Design Standards and Implementation Framework.
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