The development of waterproofing membranes has experienced a leap from traditional to modern solutions. Early membranes primarily used asphalt felt, which suffered from poor performance and short service life. From the 20th century onwards, material innovation became the central theme. Modified bitumen membranes (e.g., SBS, APP) significantly improved weather resistance and elasticity. Concurrently, synthetic polymer membranes (e.g., TPO, PVC, EPDM) emerged as a critical category due to their excellent strength and aging resistance. In recent years, the trend has moved towards environmental friendliness and efficiency. Construction techniques such as self-adhesive membranes and pre-applied / post-applied systems have become widespread, emphasizing systematic waterproofing solutions. In the future, the industry will continue to evolve towards green environmental protection, long service life, and intelligent functionalities.
As an authoritative and experienced third-party testing institution, we hold CMA and CNAS qualifications. Our test reports possess legal force and are internationally recognized. We offer the most comprehensive range of testing parameters in the industry, equipped with advanced testing instruments. We have also built a dedicated team of experts, ensuring accurate and reliable test data. We provide customized testing services based on product characteristics and engineering needs, and offer technical consulting and other value-added services as required.
Testing Products
Bituminous Waterproofing Membranes
Synthetic Polymer Waterproofing Membranes
Functional Membrane Materials (e.g., vapor permeable, reflective)
Waterproofing Sealing Products (e.g., waterstops, swelling rubber)
Roofing Tiles
Testing Items
Tensile Properties (MD/CD)
Water Impermeability / Resistance to Water Penetration (Membrane)
Water Impermeability of Seam/Joint (Lap seam)
Heat Resistance / Flow Resistance at Elevated Temperature
Oil Exudation (Plasticizer migration/leakage)
Thickness of Under-surface Bitumen Coating
Peel Strength of Self-Adhesive Bitumen Layer
Dimensional Stability / Shrinkage
Low Temperature Flexibility (Mandrel bend)
Low Temperature Bendability (Fold test)
Resistance to Chemical Liquids (including water)
Mineral Granule Adhesion (Embedment)
Tear Resistance/Strength
Puncture Resistance (Static/Dynamic)
Peel Strength of Seams/Joints
Nail Sealability / Nail Hole Waterproofing
Tack Retention / Holdability (Self-adhesive)
Elastic Recovery (Elasticity)
Impact Resistance (Impact resistance test)
Resistance to Static Load (Static load puncture)
Soluble Filler/Bitumen Content
Water Absorption
Resistance to Water Runoff / Cross-leakage (Sealant)
Peel Strength to Cast-in-Place Concrete (Pre-applied)
Resistance to Mold/Fungi Growth
Heat Aging Resistance (Air oven)
Ozone Aging Resistance (Static/Dynamic)
Accelerated Weathering (Xenon Arc)
Accelerated Weathering (Fluorescent UV)
Shear Strength at High Temperature
Crack Resistance at Low Temperature (Flexibility)
Shear Strength at 50°C
Bond Strength at 50°C
Resistance to Water Penetration after Hot Rolling (Pre-applied)
Seam/Joint Deformability (Movement capability)
Mass Change Rate (Aging)
Water Vapor Transmission (WVT) Rate (Permeability)
Water Vapor Transmission Performance (Permeance)
Resistance to Hydrostatic Pressure (Roofing)
Load-Bearing Capacity
Composite Strength (Layer adhesion)
Nail Pull-Out Resistance
Reaction to Fire / Fire Performance (Classification)
Volume Expansion Ratio (Swelling waterstop)
Flash Point (Coating)
Heavy Metal Content
Soluble Heavy Metals
Root Repellent (Root/Herbicide) Agent Content
Testing Standards
Bituminous Waterproofing Membranes
SBS modified bituminous waterproofing membrane, APP modified bituminous waterproofing membrane, modified bituminous waterproofing membrane with PE carrier, self-adhesive polymer modified bituminous waterproofing membrane, modified bituminous waterproofing membrane for roads and bridges, root-resistant waterproofing membrane for green roofs, waterproofing membrane with self-adhesive layer, pre-applied waterproofing membrane, wet-applied waterproofing membrane, polymer modified bituminous underlayment, self-adhesive polymer bituminous underlayment
GB 18242, GB 18243, GB 18967, GB 23441, JC/T 974, GB/T 35468, GB/T 23260, GB/T 23457, GB/T 35467, JC/T 1067, JC/T 1068
Synthetic Polymer Waterproofing Membranes
PVC waterproofing membrane, CPE waterproofing membrane, TPO waterproofing membrane, root-resistant waterproofing membrane for green roofs, load-bearing waterproofing membrane, waterproofing membrane with self-adhesive layer, pre-applied waterproofing membrane, polymeric waterproofing sheet, waterproofing board for railway tunnels
GB 12952, GB 12953, GB 27789, GB/T 35468, GB/T 23260, GB/T 23457, GB/T 18173.1, TB/T 3360.1
Functional Membrane Materials
Vapor permeable underlayment, thermal insulating underlayment
JC/T 2291, JC/T 2290
Waterproofing Sealing Products
Water-swellable rubber, waterstop
GB/T 18173.3, JT/T 1124.1, GB/T 18173.2, TB/T 3360.2, Q/CR 562.2, T/CECS 10015, JG/T 141
Roofing Tiles
Glass fiber reinforced bitumen shingles, stone-coated metal roofing tiles
GB/T 20474, JC/T 2470
Service Advantages
Specializing in waterproofing membrane testing for over 40 years, with strong authority and credibility; equipped with advanced and comprehensive testing instruments; staffed by a team of experts ensuring high testing capability and accurate/reliable data.
Hosts the National Center for Quality Supervision and Testing of Waterproof and Water-saving Materials and the National Building Materials Industry Center for Quality Supervision and Testing of Building Waterproofing Materials, with testing capabilities covering hundreds of waterproofing products and parameters.
Serves as the secretariat of the Subcommittee on Waterproof Materials under the National Technical Committee for Lightweight and Decorative Building Materials Standardization, responsible for standardization work including the formulation and revision of waterproof material standards. Participated in drafting the national code GB 55030, and led the drafting of major technical specifications, testing methods, and product standards significantly impacting the industry, such as GB 45320, GB/T 41078, GB/T 35609, GB/T 23457, and GB 18242.
Hosts the "National Building Materials Industry Vocational Skills Appraisal Station 040", responsible for the qualification appraisal of national vocational levels (from elementary to senior technician) for production, quality inspection, and construction in the waterproofing industry, as well as guiding training for related building materials trades.
Based on deep industry familiarity, provides customized testing services based on product characteristics and engineering needs, and offers technical services based on test results.
The most trusted service partner for leading enterprises in the waterproofing industry.
