The AQSIQ has organized national supervision and spot checks on the quality of construction waterproof materials. A total of 160 products produced by 160 companies in 14 provinces and municipalities, including Beijing, Tianjin, Hebei, Liaoning, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Henan, Shaanxi, Shandong, Sichuan, Hubei, etc. (without export products) , Including 84 elastomer modified bitumen membranes, 2 plastic modified bitumen membranes, 28 composite tire waterproof membranes, and 46 polymer waterproof membrane (sheet) products. The sampling pass rate is 89.4%.
The spot check is based on GB18242-2000 "Elastomer Modified Bitumen Waterproofing Coil", GB18243-2000 "Plastic Modified Bituminous Waterproof Coiled Membrane", JC/T690-2008 "Asphalt Composite Tire Flexible Waterproofing Membrane", GB18173.1 -2006 "Polymer waterproof sheet" and other standards, the construction of waterproofing membrane products physical and mechanical properties and labels and other items were tested. The main quality issues found in spot checks:
1. When the maximum tensile force of individual products, the elongation rate and the elongation at break are unqualified. These items are important indicators for measuring the resistance to deformation of materials. It is stipulated in the standard of elastomer modified bitumen waterproofing membrane that the elongation requirement of the polyester tire type I product is ≥ 30% when the maximum tensile force is applied. During the random inspection, some products had the maximum elongation and elongation at break and failed elongation. In the course of use, once the base layer undergoes a large deformation, the material will be torn or cracked, causing leakage.
2. The soluble content of individual products is unqualified. Soluble content is an important indicator to characterize the main raw material content of modified waterproofing membranes. The standard requires that the soluble content should be greater than or equal to 2100 g/m2. In the spot check, the soluble content of individual products was 1582 g/m2, which was lower than the standard requirement. The greater the soluble content, the higher the corresponding price of the coil. Products that do not meet the requirements are relatively poor in anti-aging properties, which reduces the waterproof function during use.
3, individual products tire base material failed. Spot checks found that individual companies replace high-alkaline non-woven fabric-mesh fabric composite tires with polyester tires or glass fiber tires, that is, the use of bituminous composite tire flexible waterproof membrane counterfeit SBS modified bitumen waterproof membrane, affecting product quality, As a result, the durability of the waterproof membrane is reduced and the waterproof effect is lost.
In addition, Panjin Dongqing Waterproof Material Co., Ltd. refused inspection in this national supervision and spot check, and its product quality was considered as unqualified.

Regarding the main quality problems found during spot checks, the AQSIQ has instructed all local quality and technical supervision departments to strictly comply with the provisions of relevant laws and regulations such as the product quality law, and dealt with enterprises that failed product quality inspections according to law and rectify them within a time limit. The AQSIQ will continue to conduct follow-up inspections on the quality of construction waterproofing membrane products, and promote the improvement of the overall quality level of the construction waterproofing membrane industry.
Construction waterproofing membrane product quality national supervision and inspection of some of the better quality products and their list of companies

No. Company Name Product Name Trademark Specification Model Date of Production (Lot) 1 Beijing Dongfang Yuhong Waterproof Technology Co., Ltd. Elastomer SBS Modified Bitumen Waterproof Coil Yuhong SBS I PY S4 2008-10-13 2 Panjin Yuwang Waterproof Building Materials Group Co., Ltd. Elastomer Modified Bitumen Waterproof Coil 禹王 SBS I PYPE4 2008-10-01 3 Weifang Hongyuan Waterproof Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coiled Material Hongyuan I PY PE 4 10m×1m×4mm 2008- 10-08 4 Changshu Sanheng Building Materials Co., Ltd. Ethylene Acetate Vinyl Waterproof Sheet (EVA Waterproof Coil) Water Bottle 26.5m×2.2m×1.5mm JS2 2008-09-20 5 Shanghai Taian Engineering Industry Co., Ltd. Sanyuan B Propylene rubber waterproofing membrane (JL1) Yuehuang JL1-EPDM-20000mm×1000mm×1.2mm 2008-09-29 6 Xuzhou Wuniu Mountain New Type Waterproof Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coil Wodd SBS I PY PE4 2008- 09-18 7 Suzhou Gusu New Building Materials Co., Ltd. Elastomer Body (SBS) Modified Asphalt Waterproof Coil Material Gusu SBS I PY PE3 2008092223 8 Panjin Daxu Waterproof Building Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coil Daxie SBS I PY M4 200809152 9 Tianjin Yan Hongjian Waterproof Materials Co., Ltd. SBS modified bitumen membrane Yu Hung SBS I PY PE 4 2008-04-07 Note: in alphabetical order.

List of products and companies that have poor national quality inspection and quality screening for construction waterproofing membrane products

No. Company Name Product Name Trademark Specification Model Production Date Major Unqualified Project 1 Henan Guangsha Waterproof Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coil Guangsha I PY PE 3 10m×1m×3mm 2008-07-05 When the maximum tension Elongation (longitudinal, transverse), low temperature flexibility tire base material 2 Harbin Shuining Waterproof Material Co., Ltd. Asphalt composite tire flexible waterproofing membrane Shui Ning PYK-PE3C 2008-06-28 Tire base material, elongation (vertical, horizontal ) 3 Chengdu Shuanglong Tianjiao Waterproofing Material Co., Ltd. Elastomer Modified Bitumen Waterproofing Coil Shuanglong Tianjiao Thickness 3mm Length 10m 2008-09-21 Tire Base Material 4 Deyang Sanxing Waterproofing Building Materials Engineering Co., Ltd. Asphalt composite tire flexible waterproofing membrane Samsung (1m ×10m)GPE-PE-3C 2008-09-20 Tire Base Material 5 Langfang Zhonghai Building Waterproof Material Engineering Co., Ltd. Elastomer Modified Bitumen Waterproofing Coil China Sea SBS I PY PE 3 2008-06-13 Soluble Content Note :names not listed in order. Construction Waterproofing Coil Product Quality National Supervision and Inspection List of Listed Companies Name Company Name Product Name Trademark Specification Model Date of Production Major Unqualified Project Panjin Dongqing Waterproof Material Co., Ltd. Asphalt composite tire flexible waterproofing membrane Dongqing NK-M3 2008-010-08 Refusal to check

Correct selection of building waterproofing membranes
Construction waterproofing membranes are mainly used in building walls, roofs, tunnels, highways, landfills, etc., and can be used as a kind of flexible building materials that can withstand rolling rain and groundwater leakage and can be rolled into coils. There is no leakage connection between the foundation and the building, which is the first barrier for waterproofing the entire project and plays a vital role in the entire project. The main products are bitumen waterproof membranes and polymer waterproof membranes.
Asphalt waterproofing membrane with elastomer (SBS) modified bitumen membrane, plastic (APP) modified bitumen membrane, asphalt composite tire flexible waterproof membrane.
Asphalt waterproofing membrane (SBS) modified bitumen membrane and modified bitumen membrane (APP) modified bitumen membrane is based on polyester tire or glass fiber tire. Asphalt-based tire is based on bitumen-based flexible waterproof membrane. The composite material is composed of two materials. Most of the compound tires are compounded by chemical fiber rags and high-alkali glass fiber mesh cloths. They are not easy to dip coating, mold, water resistance, and durability. Therefore, they have a short service life. Used for occasions where temporary buildings or fortification levels are not required. The standard clearly stipulates that except for SBS coiled materials, any other bitumen waterproofing membrane made of modified bitumen, tire base, and top surface material may not be called "SBS".
First, the packaging logo. The above three types of materials alone do not differ much from the appearance, so the first thing to look at is whether the packaging and labeling are standardized. The sign must indicate: the manufacturer's name, trademark, product mark, production date or batch number, production license number, storage and transportation precautions, are indispensable. Each coil shall be marked and marked in strict accordance with the order specified by national standards. At the same time, it should be noted that the storage period of coils generally does not exceed one year.
Second, look at the base. The method of tearing the edge of the web by hand can be used to determine whether the tire base is consistent with the mark, whether it is completely saturated, and meets the requirements of the standard. The base cannot have unsaturated white marks or light spots. Polyester tires are extremely difficult to tear and break by hand, and the asphalt and the tire base have good affinity, while asphalt composite tire membranes are often easy to tear and can be observed by tearing.
Third, determine by physical performance testing. Trim 0.8m coils for physical and mechanical testing according to standards, and meet the standard requirements for qualified products.
Polymer waterproof membranes are usually divided into:
JL1 type: EPDM rubber waterproof sheet is a homogeneous waterproof sheet made of EPDM rubber. It is an internationally recognized high-grade waterproof material characterized by high elasticity and extensibility. Good, weather-resistant performance is the preferred material for key projects.
JL2 type: Rubber (rubber and plastic) blended waterproof sheet is a waterproof sheet made of rubber and plastic or rubber and rubber, which is characterized by good flexibility and excellent adhesiveness.
JS2 type: homogeneous resin type waterproof sheet main material is EVA, which is characterized by high strength, good resistance to ozone, and its good characteristics of hot-melt welding is the preferred material in subway and other underground projects. JF2 type: non-vulcanized rubber-plastic blended waterproof sheet, the main material is rubber and plastic, rubber and rubber are blended. After the rolling, it only needs to be parked at room temperature, and the production efficiency is high.
FS2 type: polyethylene polypropylene membrane has easy adhesion, high friction coefficient and wide temperature range. When choosing to purchase, you must also pay attention to whether the content of the product mark meets the requirements of the standard. When signing the contract, you must specify the implementation of standards, classification, size and other specifications.


The AQSIQ has organized national supervision and spot checks on the quality of construction waterproof materials. A total of 160 products produced by 160 companies in 14 provinces and municipalities, including Beijing, Tianjin, Hebei, Liaoning, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Henan, Shaanxi, Shandong, Sichuan, Hubei, etc. (without export products) , Including 84 elastomer modified bitumen membranes, 2 plastic modified bitumen membranes, 28 composite tire waterproof membranes, and 46 polymer waterproof membrane (sheet) products. The sampling pass rate is 89.4%.
The spot check is based on GB18242-2000 "Elastomer Modified Bitumen Waterproofing Coil", GB18243-2000 "Plastic Modified Bituminous Waterproof Coiled Membrane", JC/T690-2008 "Asphalt Composite Tire Flexible Waterproofing Membrane", GB18173.1 -2006 "Polymer waterproof sheet" and other standards, the construction of waterproofing membrane products physical and mechanical properties and labels and other items were tested. The main quality issues found in spot checks:
1. When the maximum tensile force of individual products, the elongation rate and the elongation at break are unqualified. These items are important indicators for measuring the resistance to deformation of materials. It is stipulated in the standard of elastomer modified bitumen waterproofing membrane that the elongation requirement of the polyester tire type I product is ≥ 30% when the maximum tensile force is applied. During the random inspection, some products had the maximum elongation and elongation at break and failed elongation. In the course of use, once the base layer undergoes a large deformation, the material will be torn or cracked, causing leakage.
2. The soluble content of individual products is unqualified. Soluble content is an important indicator to characterize the main raw material content of modified waterproofing membranes. The standard requires that the soluble content should be greater than or equal to 2100 g/m2. In the spot check, the soluble content of individual products was 1582 g/m2, which was lower than the standard requirement. The greater the soluble content, the higher the corresponding price of the coil. Products that do not meet the requirements are relatively poor in anti-aging properties, which reduces the waterproof function during use.
3, individual products tire base material failed. Spot checks found that individual companies replace high-alkaline non-woven fabric-mesh fabric composite tires with polyester tires or glass fiber tires, that is, the use of bituminous composite tire flexible waterproof membrane counterfeit SBS modified bitumen waterproof membrane, affecting product quality, As a result, the durability of the waterproof membrane is reduced and the waterproof effect is lost.
In addition, Panjin Dongqing Waterproof Material Co., Ltd. refused inspection in this national supervision and spot check, and its product quality was considered as unqualified.

Regarding the main quality problems found during spot checks, the AQSIQ has instructed all local quality and technical supervision departments to strictly comply with the provisions of relevant laws and regulations such as the product quality law, and dealt with enterprises that failed product quality inspections according to law and rectify them within a time limit. The AQSIQ will continue to conduct follow-up inspections on the quality of construction waterproofing membrane products, and promote the improvement of the overall quality level of the construction waterproofing membrane industry.
Construction waterproofing membrane product quality national supervision and inspection of some of the better quality products and their list of companies

No. Company Name Product Name Trademark Specification Model Date of Production (Lot) 1 Beijing Dongfang Yuhong Waterproof Technology Co., Ltd. Elastomer SBS Modified Bitumen Waterproof Coil Yuhong SBS I PY S4 2008-10-13 2 Panjin Yuwang Waterproof Building Materials Group Co., Ltd. Elastomer Modified Bitumen Waterproof Coil 禹王 SBS I PYPE4 2008-10-01 3 Weifang Hongyuan Waterproof Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coiled Material Hongyuan I PY PE 4 10m×1m×4mm 2008- 10-08 4 Changshu Sanheng Building Materials Co., Ltd. Ethylene Acetate Vinyl Waterproof Sheet (EVA Waterproof Coil) Water Bottle 26.5m×2.2m×1.5mm JS2 2008-09-20 5 Shanghai Taian Engineering Industry Co., Ltd. Sanyuan B Propylene rubber waterproofing membrane (JL1) Yuehuang JL1-EPDM-20000mm×1000mm×1.2mm 2008-09-29 6 Xuzhou Wuniu Mountain New Type Waterproof Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coil Wodd SBS I PY PE4 2008- 09-18 7 Suzhou Gusu New Building Materials Co., Ltd. Elastomer Body (SBS) Modified Asphalt Waterproof Coil Material Gusu SBS I PY PE3 2008092223 8 Panjin Daxu Waterproof Building Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coil Daxie SBS I PY M4 200809152 9 Tianjin Yan Hongjian Waterproof Materials Co., Ltd. SBS modified bitumen membrane Yu Hung SBS I PY PE 4 2008-04-07 Note: in alphabetical order.

List of products and companies that have poor national quality inspection and quality screening for construction waterproofing membrane products

No. Company Name Product Name Trademark Specification Model Production Date Major Unqualified Project 1 Henan Guangsha Waterproof Material Co., Ltd. Elastomer Modified Bitumen Waterproof Coil Guangsha I PY PE 3 10m×1m×3mm 2008-07-05 When the maximum tension Elongation (longitudinal, transverse), low temperature flexibility tire base material 2 Harbin Shuining Waterproof Material Co., Ltd. Asphalt composite tire flexible waterproofing membrane Shui Ning PYK-PE3C 2008-06-28 Tire base material, elongation (vertical, horizontal ) 3 Chengdu Shuanglong Tianjiao Waterproofing Material Co., Ltd. Elastomer Modified Bitumen Waterproofing Coil Shuanglong Tianjiao Thickness 3mm Length 10m 2008-09-21 Tire Base Material 4 Deyang Sanxing Waterproofing Building Materials Engineering Co., Ltd. Asphalt composite tire flexible waterproofing membrane Samsung (1m ×10m)GPE-PE-3C 2008-09-20 Tire Base Material 5 Langfang Zhonghai Building Waterproof Material Engineering Co., Ltd. Elastomer Modified Bitumen Waterproofing Coil China Sea SBS I PY PE 3 2008-06-13 Soluble Content Note :names not listed in order. Construction Waterproofing Coil Product Quality National Supervision and Inspection List of Listed Companies Name Company Name Product Name Trademark Specification Model Date of Production Major Unqualified Project Panjin Dongqing Waterproof Material Co., Ltd. Asphalt composite tire flexible waterproofing membrane Dongqing NK-M3 2008-010-08 Refusal to check

Correct selection of building waterproofing membranes
Construction waterproofing membranes are mainly used in building walls, roofs, tunnels, highways, landfills, etc., and can be used as a kind of flexible building materials that can withstand rolling rain and groundwater leakage and can be rolled into coils. There is no leakage connection between the foundation and the building, which is the first barrier for waterproofing the entire project and plays a vital role in the entire project. The main products are bitumen waterproof membranes and polymer waterproof membranes.
Asphalt waterproofing membrane with elastomer (SBS) modified bitumen membrane, plastic (APP) modified bitumen membrane, asphalt composite tire flexible waterproof membrane.
Asphalt waterproofing membrane (SBS) modified bitumen membrane and modified bitumen membrane (APP) modified bitumen membrane is based on polyester tire or glass fiber tire. Asphalt-based tire is based on bitumen-based flexible waterproof membrane. The composite material is composed of two materials. Most of the compound tires are compounded by chemical fiber rags and high-alkali glass fiber mesh cloths. They are not easy to dip coating, mold, water resistance, and durability. Therefore, they have a short service life. Used for occasions where temporary buildings or fortification levels are not required. The standard clearly stipulates that except for SBS coiled materials, any other bitumen waterproofing membrane made of modified bitumen, tire base, and top surface material may not be called "SBS".
First, the packaging logo. The above three types of materials alone do not differ much from the appearance, so the first thing to look at is whether the packaging and labeling are standardized. The sign must indicate: the manufacturer's name, trademark, product mark, production date or batch number, production license number, storage and transportation precautions, are indispensable. Each coil shall be marked and marked in strict accordance with the order specified by national standards. At the same time, it should be noted that the storage period of coils generally does not exceed one year.
Second, look at the base. The method of tearing the edge of the web by hand can be used to determine whether the tire base is consistent with the mark, whether it is completely saturated, and meets the requirements of the standard. The base cannot have unsaturated white marks or light spots. Polyester tires are extremely difficult to tear and break by hand, and the asphalt and the tire base have good affinity, while asphalt composite tire membranes are often easy to tear and can be observed by tearing.
Third, determine by physical performance testing. Trim 0.8m coils for physical and mechanical testing according to standards, and meet the standard requirements for qualified products.
Polymer waterproof membranes are usually divided into:
JL1 type: EPDM rubber waterproof sheet is a homogeneous waterproof sheet made of EPDM rubber. It is an internationally recognized high-grade waterproof material characterized by high elasticity and extensibility. Good, weather-resistant performance is the preferred material for key projects.
JL2 type: Rubber (rubber and plastic) blended waterproof sheet, is a waterproof sheet made of rubber and plastic or rubber and rubber, which is characterized by good flexibility and excellent adhesion.
JS2 type: homogeneous resin type waterproof sheet main material is EVA, which is characterized by high strength, good resistance to ozone, and its good characteristics of hot-melt welding is the preferred material in subway and other underground projects. JF2 type: Non-vulcanized rubber-plastic blend waterproof sheet, the main material is rubber and plastic, rubber and rubber are blended. After the rolling, it only needs to be parked at normal temperature, and the production efficiency is high.
FS2 type: polyethylene polypropylene membrane has easy adhesion, high friction coefficient and wide temperature range. When choosing to purchase, you must also pay attention to whether the content of the product mark meets the requirements of the standard. When signing the contract, you must specify the implementation of standards, classification, size and other specifications.

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