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Analysis of China's waterproof membrane market

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Analysis of China's waterproof membrane market

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In recent years, China's sponge cities, urban integrated pipeline corridors, new infrastructure investment, house repairs and old renovations have continued to expand, which has promoted the rapid growth of market demand for the waterproofing membrane industry, and China's waterproofing membrane industry has entered a stage of development.



Waterproof membrane is a rollable sheet-shape waterproof material, used in building walls, roofs, tunnels, highways, landfills, etc., to resist the leakage of external rainwater and groundwater. In recent years, with the development of the national economy and the continuous growth of the construction industry, China's waterproofing membrane industry has developed rapidly, with the continuous increase of new materials and new processes, and the significant increase in production capacity. The product quality of some key enterprises has reached the international advanced level.


Most of China's waterproof building material companies are waterproofing membrane manufacturers. According to the statistics of the China Building Waterproof Association, the number of companies above designated scale of China's waterproof building materials (main business above 20 million RMB) from 2016 to 2020 is fluctuating. In 2018, the number of waterproofing enterprises above designated size in China reached 784, it is the maximum number in recent years.


(2016-2020 Number of Waterproof Building Material Enterprises Above Designated Size in China)


According to the data released by the China Building Waterproofing Association, in 2019, the cumulative sales income of 653 waterproof building materials companies above the designated size (main business income above 20 million RMB) was 99.043 billion RMB. From January to December 2020, there were 722 companies. The cumulative sales revenue of waterproof building materials enterprises above designated size (main business income above 20 million RMB) was 108.7 billion RMB. It is an increase of 4.6% over the same period in 2019.


(Sales revenue of waterproof building materials enterprises above designated size in China, 100 million RMB)


According to data released by the China Building Waterproofing Association, in 2019, China's waterproof building materials and waterproofing membrane products accounted for the largest proportion, reaching 63.76%. According to this calculation, the size of China's waterproofing membrane market in 2019 is 105.2 billion RMB, and it is estimated that the amount of China's waterproofing membrane market will exceed 110 billion RMB in 2020.


(2014-2020 The scale of China's waterproof membrane market)


At present, the application of waterproofing membrane is mainly in residential and civil buildings, followed by infrastructure. Waterproof materials are mainly used in roofing, underground, kitchen and bathroom, external walls and other parts in housing construction, of which roofing and basement account for the highest proportion; The facilities are mainly used in railways, rail transit, bridges, tunnels, underground pipe corridors, airports, reservoirs, water conservancy and other fields.

Weifang Sunshine Union Hospital Project
    Sunshine Union Hospital is located in the National High-tech Industrial Development Zone, Weifang City, Shandong Province, covering an area of 630,000 square meters, of which the first phase has a construction area of 280,000 square meters.



    The roof of this project is a concrete structure. Due to the long service life, the bonding mortar at the bottom of the original roof floor tile paving layer is aging and cracking, resulting in the floor tiles falling off and poor sealing. The original waterproof layer and the sealing of the detailed nodes have leaks, and it is difficult to achieve the purpose of waterproofing by local maintenance, which will affect the normal use of the top layer.


    In order to completely solve the roof leakage, the hospital carried out the overall waterproof reconstruction of the roof. The project adopts the "OTAi" brand TPO membrane of Tianjin Binhai OTAi Waterproof Materials Co., Ltd.


    Tianjin OTAi thermoplastic polyolefin (TPO) waterproofing membrane adopts imported raw materials from Basel in Europe, and has passed the FM certification of the United States. The artificial climate aging resistance up to 9000 hours. 


    The roof waterproofing renovation of Weifang Sunshine Union Hospital adopts double fortification. The first layer of waterproofing adopts Tianjin OTAi SR Polymer-modified Cementitious Waterproof coating 1.5mm to form a film, and then is covered with Tianjin OTAi (TPO) self-adhesive waterproof membrane. The large surface is covered with sticky construction, and the seams are welded by hot air. The two waterproof layers complement each other and provide comprehensive waterproof protection for the roof.



    Tianjin OTAi focuses on the cutting-edge technology and high-end products of building waterproof materials, and “promotes the development of China's waterproof industry with innovative materials and complete solutions”. Tianjin OTAi strives to become the world's leading supplier of waterproof systems.
2022-08-30 13:29
OTAi Focus on social sustainable development, environmental protection, and your health
As a manufacturer of polymer waterproof materials, Tianjin Binhai OTAi Waterproof Material Co., Ltd. has been committed to providing customers with green and healthy waterproof products.


Since OTAi Waterproof established, the company has improved the environmental protection of its products by improving product technology and upgrading production processes. In the production process of the product, the use of raw materials containing heavy metals and other toxic and carcinogenic substances is avoided, and the production process is strictly controlled to reduce the generation of VOCs, and the exhaust gas in the production process is purified.


Recently, SGS, an international authoritative testing agency, conducted RoHS and REACH testing on OTAi products, and tested a total of 219 substances that seriously affect the environment and human health. The result was ND-Not Detected related toxic and hazardous substances.


RoHS test items include (Pb), (Cd), (Hg), (Cr), (PBBs) and (PBDEs), etc.;

REACH includes CMR categories: carcinogens, mutagens, substances toxic to the reproductive system; PBT categories: persistent, bioaccumulative toxic substances; vPvB categories: permanent and highly bioaccumulative substances that may have serious effects on human health and the environment.


(ROHS test report)


(REACH test report)


The test results prove that OTAi products are safe and environmentally friendly. As a central waterproof enterprise, we have been committed to "focusing on sustainable social development, environmental protection, and your health". OTAi will continue to provide excellent products and high-quality services for our customers.
2022-07-15 14:36
Yixing Zhonghuan DW Phase IV Project
Yixing Zhonghuan DW Phase IV Project is an important project in Yixing Economic and Technological Development Zone, and the steel structure metal roofing area of this project is about 60,000 square meters. The waterproof layer is made of 1.5mm thickness fabric inner reinforced thermoplastic polyolefin (TPO) waterproof membrane, and the construction method is fixed by non-perforated mechanical construction method.



The advantages of BNBM OTAi non-perforation mechanical fixation system:


- Compared with the mechanical fixing method with perforation, the construction efficiency of mechanical fixing without perforation is higher.

- It is not necessary to fix the edges of each roll.

- No need to consider the width of membrane.

- No need to cut the membrane (reduced membrane lap seams).

- The wind load can be distributed more evenly.

- Improve the level of wind resistance, currently the highest level can reach FM 1-210.

- The roof is more beautiful to look at.

- Improve construction efficiency and reduce labor intensity of workers.


TPO waterproofing membrane seam strength peel test


Strengthen the processing of connection nodes


TPO single-layer roof under construction


Construction of TPO single-layer roof


BNBM OTAi is a comprehensive waterproof enterprise integrating scientific research, production, sales, construction and technical services. It has strong technical strength, excellent R&D team and advanced scientific research equipment. BNBM OTAi's waterproofing products mainly include TPO/ PVC/ HDPE  waterproof membrane, polymer-modified cementitious waterproof coating and waterproof prefabricated products. The company has introduced international advanced application technology to form a product system focusing on drain, photovoltaic, exhaust, fastening and detail prefabrication. BNBM OTAi will continue to provide excellent products and high-quality services for our customers.
2022-06-14 15:39
OTAi - Chongqing Longxing Football Stadium Project
Chongqing Longxing Football Stadium is one of the hosting venues for the 18th Asian Cup in 2023. It is located at the foot of Longnao Mountain next to the Longxing Guzhen, Chongqing. The total construction area of the football field is 166,900 square meters, which can accommodate about 60,000 spectators. After completion, it will be one of the largest football stadiums in China.



The Chongqing Longxing Football Stadium has a steel structure roof with an oval shape. Waterproof content includes metal roofing and gutter waterproofing.

Waterproof material: TPO Reinforced waterproof membrane, TPO fabric backing waterproof membrane.

    - Prefabricated waterproof flashing: 16,000 pieces of open pipe wraps

    - Waterproofing area: Total area of 36,000 square meters

Otai polymer waterproof material is suitable for all kinds of single-layer roofs and exposed roofs.



Chongqing Longxing Football Stadium is a steel structure roof, oval in shape, with a roof height of 59.5 meters. The wind is strong all year round, so wind resistance is also the focus of the project's waterproof work. TPO membrane has to withstand a long time of tension, and the non-perforated welding disperses the fixed parts evenly, so that each nail is evenly stressed, and the wind resistance system is more stable.


OTAi waterproof prefabs make it easier to handle waterproof details. The use of OTAi pipe wrap prefabricated parts improves the efficiency of construction and reduces the loss of waterproofing membranes.



OTAi will continue to provide excellent products and high-quality services for our customers.



2022-05-17 13:41