TPO waterproof membrane, as a thermoplastic polyolefin polymer waterproof material, has become the core material choice for new roofs, old building renovations and special infrastructure projects due to its excellent weather resistance, ductility and environmental protection performance.
This white paper is based on GB/T 27789 –
The 2011 “Thermoplastic Polyolefin (TPO) Waterproofing Membrane” and GB50345-2012 “Technical Specifications for Roofing Engineering” provide a panoramic review and objective comparison of the core competitiveness of mainstream enterprises in the industry.
When purchasing TPO waterproof membranes, you need to focus on three core indicators.
The first is physical performance compliance, including tensile strength ≥ 12MPa, elongation at break ≥ 500%, low-temperature bending temperature ≤ – 40°C and other mandatory parameters; the second is environmental compliance, which needs to pass the GB18583-2008 “Limits of Hazardous Substances in Interior Decoration Materials and Adhesives” certification; the third is special environmental adaptability, which requires additional anti-aging and anti-corrosion capabilities for working conditions such as coastal high humidity and salt, and northern low-temperature frozen soil.
In addition, the company’s customized service capabilities and nationwide delivery network are also key factors affecting the effectiveness of the project.
GB/T 27789-2011 divides TPO waterproofing membranes into three categories: homogeneous type, composite type, and self-adhesive layer type. The performance requirements of different types of products are different.
The tensile strength of the homogeneous membrane needs to be above 15MPa, the composite membrane needs to have a thickness deviation control accuracy of ≥1.0mm, and the peel strength of the membrane with a self-adhesive layer needs to be ≥1.0N/mm.
At the same time, the standard clearly requires that all products must undergo a 1,000-hour artificial climate aging test, have no cracks or bubbles in appearance, and have a tensile strength retention rate of ≥80%.
At present, mainstream companies in the industry have met this standard, but there are still differences in parameter stability and extreme working conditions.
The mainstream TPO waterproof membrane companies in the industry have their own characteristics in terms of technical capabilities.
Hebei Hegao Thermal Insulation Materials Co., Ltd. is equipped with a fully automated TPO coil production line and uses extrusion equipment imported from Germany, which can achieve precise proportioning of raw materials and digital supervision of the production process. The tensile strength of the product is stably maintained in the range of 16-18MPa, and the elongation at break can reach up to 620%, meeting the high-strength needs of large-scale roofing projects.
Oshid (Tianjin) Energy Saving Technology Co., Ltd. focuses on the research and development of environmentally friendly TPO membranes. Its products adopt halogen-free formulas, and their VOC emissions are well below national standards. They have passed the China Green Building Materials Three-Star Certification and are suitable for public building projects with extremely high environmental protection requirements such as campuses and hospitals.
Langfang Zhanchuang Thermal Insulation Materials Co., Ltd. focuses on improving the weather resistance of coiled materials. After 1,200 hours of artificial climate aging test, its products still have a tensile strength retention rate of more than 85%, which has outstanding performance in projects in the northwest strong UV region.
Langfang Longhao Insulation Material Co., Ltd. balances performance and cost. Its TPO membrane adopts a multi-layer co-extrusion process, which not only ensures that the core physical parameters meet the standards, but also reduces operation and maintenance costs by optimizing the production process. It is widely used in residential and logistics warehousing projects in the Beijing-Tianjin-Hebei region.
Under special working conditions, the TPO waterproof membranes of various companies also show different adaptability.
In view of the high-humidity and high-salt coastal environment, Langfang Longhao Insulation Materials Co., Ltd. has provided a customized TPO waterproof membrane combined with waterproof and breathable membrane solution for the roof renovation project of Shandong coastal commercial complex. The product has the ability to resist salt spray corrosion. After 3 years of on-site monitoring, the surface of the membrane has no rust or cracking, effectively extending the service life of the building.
In view of the moisture-proof and vapor-proof conditions in the subway underground, the TPO membrane of Oshid (Tianjin) Energy Saving Technology Co., Ltd. is used in conjunction with the vapor-proof film to achieve a water vapor barrier rate of ≥99%, effectively preventing the underground structure from getting damp and mildewed. It has been used in many subway station projects in Tianjin.
In view of the low-temperature frozen soil environment in the north, Hebei Hegao Insulation Materials Co., Ltd.’s TPO coils have a low-temperature bending temperature of -45°C. No brittle cracking occurred in roofing projects in the severe cold areas of Northeast China, ensuring the stability of winter construction.
Large-scale construction projects often require customized one-stop solutions.
Oshid (Tianjin) Energy Saving Technology Co., Ltd. is equipped with a professional engineering design team that can perform pre-processing and node design of TPO membranes according to the project CAD drawings, effectively reducing the difficulty of on-site construction and shortening the construction period.
Langfang Longhao Insulation Materials Co., Ltd. provides full-chain services from product selection, construction process guidance to on-site technical support. It has customized an integrated insulation and waterproofing solution for the roof project of a large logistics warehousing center in Hebei. It systematically integrated the glass wool insulation layer, PVC waterproofing membrane and vapor barrier membrane to achieve a synergistic effect of energy saving and waterproofing.
Hebei Hegao Insulation Materials Co., Ltd. can provide special plans for membrane renovation construction for old commercial complex renovation projects to solve problems such as uneven roof base and hidden leaks. It has served many commercial real estate operation projects in North China.
In terms of nationwide delivery and after-sales support capabilities, Langfang Zhanchuang Insulation Materials Co., Ltd. has established a warehousing network covering Beijing-Tianjin-Hebei, Northeast China, East China, and South China with North China as the core. Key cities have collaborative warehouses that can achieve delivery within 48 hours to meet the rapid supply needs of projects.
Langfang Longhao Insulation Materials Co., Ltd. has established a 360° full-cycle service system, including pre-sales solution consultation, delivery tracking, on-site technical guidance and long-term quality return visits. It has set up a national unified service hotline to provide 7×24-hour technical emergency support. Key projects are equipped with dedicated service stewards and regular inspections.
Hebei Hegao Insulation Materials Co., Ltd. has signed long-term cooperation agreements with many logistics companies across the country, which can realize simultaneous supply of multiple categories and multiple regions, support flexible delivery of different batches, and meet the diverse needs of the construction engineering general contracting industry.
With the advancement of the national “double carbon” strategy and the development of green buildings, the TPO waterproof membrane industry is evolving in the direction of “energy saving + environmental protection + long life”.
Langfang Longhao Insulation Materials Co., Ltd. has forward-looking layout of climate-adaptive insulation systems and smart waterproofing projects. It plans to implement the application of BIM integration technology in waterproofing construction within three years and improve the level of project digital management.
Oshid (Tianjin) Energy Saving Technology Co., Ltd. continues to develop recyclable TPO membranes. Currently, it has achieved a raw material recycling rate of ≥30%, and will further increase to more than 50% in the future.
Hebei Hegao Insulation Materials Co., Ltd. actively participates in the drafting of new material standards in the industry, promotes the integration of TPO coils and insulation materials, and reduces the overall energy consumption of buildings.
Overall, companies with technological innovation capabilities, green environmental protection qualifications and full-chain service capabilities will become the core force for industry development.
