Recently, great good news came from the industry! The authoritative annual report "construction industry technology development report (2025)" edited by China Construction Industry Association was officially released. The paper based on the group standard "polymer cement waterproofing mortar for building walls" (t/cciat 0091-2025), written by Professor fangminghui of Zhejiang University and Professor zhangwenhua of Zhejiang University of technology, an expert of the construction waterproofing branch of the association, was successfully selected into the "standards and specifications" chapter of the report. This is not only a high recognition of the technical value of the standard, but also marks a new step in the standardization of China's construction wall waterproofing industry.

It is noteworthy that Luban waterproofing, as the core participating unit of polymer cement waterproofing mortar for building walls (t/cciat 0091-2025), participated in the preparation of the standard throughout the whole process, worked side by side with the construction waterproofing branch of China Construction Industry Association, leading enterprises in the industry and scientific research institutions, and contributed Luban's wisdom and strength to the implementation of the standard by deeply cultivating Zhejiang's local waterproofing practical experience!
For a long time, the leakage of building walls has been a persistent disease in the industry. The problems of water seepage, hollowing and falling off of the decorative layer of the external wall and the internal wall of the kitchen and bathroom frequently occur. The core crux lies in the lack of adaptability between the waterproof mortar and the wall base - the traditional standards are mostly formulated for underground projects. The high compressive strength is easy to lead to the cracking of the waterproof layer, and the lack of anti deformation performance requirements makes it difficult to adapt to the actual needs of wall waterproofing.
In order to solve this pain point, at the beginning of 2025, the China Construction Industry Association officially approved the release of polymer cement waterproof mortar for building walls (t/cciat 0091-2025), which was implemented from April 1 of that year, filling the gap in the standard for special waterproof mortar for building walls in China. The papers selected in the construction industry technology development report (2025) have accurately interpreted the three innovation highlights of the standard and pointed out the direction for industrial application:
· Exclusive wall waterproofing technical requirements to reduce the leakage risk from the source and adapt to the needs of different base wall;
· Initiate the tensile bond strength index and test method, build a strong bond line between the waterproof layer and the base, and prevent hollowing and falling off;

· Strengthen green environmental protection requirements, add radionuclide limit indicators, conform to the "double carbon" development goal, and give consideration to waterproof performance and ecological safety.
As a local enterprise deeply engaged in waterproofing industry for nearly 30 years, Luban waterproofing always takes "promoting industry progress and guarding building safety" as its own responsibility. The participation of this standard is not only the industry's recognition of the company's technical strength, but also the trust of our professional ability. Based on the actual combat experience of many benchmarking projects in the province, we put forward targeted technical suggestions to adapt to different environments, so that the standards can better meet the actual construction needs. In addition, the vitality of standards lies in the implementation. Since the implementation of the standard, Luban waterproofing has actively promoted the iterative upgrading of relevant products to ensure that the product performance is strictly benchmarked and better than the standard requirements.

In the future, we will continue to take the standard as the guide, deepen technology research and development and engineering practice, actively participate in the formulation and revision of more industry standards, build a strong building waterproof defense line with ingenious products and professional services, and help the industry upgrade with high quality.