Waterproof Material Testing
Waterproof sheets, waterproof coatings, sealing and leak-filling materials, rigid waterproof materials, asphalt-based sheets, polymer sheets, pre-rolled/wet-laid sheets, self-adhesive sheets, polymer cement coatings, polyurethane coatings, asphalt-based coatings, water-based coatings, waterproof sealants, inorganic waterproof leak-filling materials, water-expanding water-stop strips, cement-based crystalline materials, waterproof mortars, waterproof concrete, waterproof breathable membranes, metal roof waterproof systems, waterproof layers.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Testing scope
Waterproof sheets, waterproof coatings, sealing and leak-filling materials, rigid waterproof materials, asphalt-based sheets, polymer sheets, pre-rolled/wet-laid sheets, self-adhesive sheets, polymer cement coatings, polyurethane coatings, asphalt-based coatings, water-based coatings, waterproof sealants, inorganic waterproof leak-filling materials, water-expanding water-stop strips, cement-based crystalline materials, waterproof mortars, waterproof concrete, waterproof breathable membranes, metal roof waterproof systems, waterproof layers
Testing contents
Water impermeability: No leakage within the specified pressure (≥0.3MPa) and time (30min), sheet ≥0.3MPa, coating ≥0.2MPa
Anti-seepage: Rigid waterproof materials have anti-seepage pressure ≥1.2MPa, permeability coefficient ≤1.0×10⁻¹⁰cm/s
Water resistance: Quality / strength change rate after soaking ≤5%, water impermeability retention rate ≥80%
Self-healing: Ability to automatically repair small cracks, crack width ≤0.3mm can self-heal
Tensile properties: Tensile strength (sheet ≥800N/50mm, coating ≥1.2MPa), elongation at break (sheet ≥30%, elastic coating ≥300%)
Low-temperature flexibility: No cracks at the specified low temperature (-20℃~-30℃), adaptability to temperature changes
Bonding strength: Adhesion force to the base layer (coating ≥0.6MPa, sheet ≥0.5MPa)
Tear resistance: Resistance to sharp object penetration, sheet ≥30N, metal roof ≥100N
Solid content: Coating ≥65%, ensuring film thickness and durability
Drying time: Surface dry ≤4h, full dry ≤24h, meeting construction rhythm requirements
Aging resistance: Performance retention rate after thermal aging (80℃×168h), ultraviolet aging (1000h) ≥80%
Chemical resistance: Resistance to acid (5% H₂SO₄), alkali (saturated Ca (OH)₂), salt spray after performance change rate ≤10%
Heat resistance: No, no bubbling at the specified temperature (70℃~100℃)
Flame retardancy： Exposed materials ≥B2 grade (GB 8624-2012), hot-melt materials flash point ≥200℃
Environmental performance： VOC content ≤100g/L, formaldehyde ≤0.1g/kg, soluble heavy metals (lead / cadmium / chromium / mercury) ≤100mg/kg
Testing standards
GB/T 328.1-2021 Test Methods for Building Waterproofing Sheets - Part 1: Sampling
GB/T 328.2-2021 Test Methods for Building Waterproofing Sheets - Part 2: Appearance
GB/T 328.3-2021 Test Methods for Building Waterproofing Sheets - Part 3: Length, Width, Thickness and Unit Area Mass
GB/T 328.9-2021 Test Methods for Building Waterproofing Sheets - Part 9: Tensile Properties
GB/T 328.10-2021 Test Methods for Building Waterproofing Sheets - Part 10: Impermeability
GB/T 328.11-2021 Test Methods for Building Waterproofing Sheets - Part 11: Tear Resistance
GB/T 328.15-2021 Test Methods for Building Waterproofing Sheets - Part 15: Low Temperature Flexibility
GB/T 16777-2021 Test Methods for Building Waterproofing Coatings
GB/T 13477.1-2017 Test Methods for Building Sealing Materials - Part 1: Specifications of Test Substrates
GB 45671-2025 Safety Technical Specifications for Building Waterproofing Coatings (Implemented on 2025-11-01)
GB 45320-2025 Safety and General Technical Specifications for Building Waterproof Sheets
GB/T 18242-2025 Elastomeric Modified Asphalt Waterproof Sheets
GB/T 18243-2025 Plasticized Modified Asphalt Waterproof Sheets
GB/T 23457-2025 Pre-Placed Waterproof Sheets
GB/T 23458-2025 Wet Placed Waterproof Sheets
GB/T 19379-2025 Self-Adhesive Polymer Modified Asphalt Waterproof Sheets
GB/T 18173.1-2012 Polymer Waterproof Materials - Part 1: Sheets
GB/T 27789-2011 Thermoplastic Polyolefin (TPO) Waterproof Sheets
GB/T 23445-2025 Polymer Cement Waterproof Coatings
GB/T 19250-2013 Polyurethane Waterproof Coatings
GB/T 16777-2021 Test Methods for Building Waterproofing Coatings
JC/T 408-2005 Water-Based Asphalt Waterproof Coatings
JC/T 2217-2014 Water-Based Asphalt-Based Waterproof Coatings
GB/T 23440-2025 Inorganic Waterproof Sealing Materials
GB/T 18173.2-2014 Polymer Waterproof Materials - Part 2: Waterstop
GB/T 18173.3-2014 Polymer Waterproof Materials - Part 3: Water-Expanding Waterstop Strip
GB/T 14683-2017 Silicone and Modified Silicone Building Sealants
GB/T 23261-2009 Building Sealants for Stone
GB/T 18445-2025 Cement-Based Penetrating Crystalline Waterproof Materials
GB/T 23447-2009 Building Waterproof Mortar
GB 50108-2008 Technical Specifications for Waterproofing in Underground Works
GB 50208-2011 Specifications for Quality Acceptance of Underground Waterproof Works
GB 18583-2008 Limitations on Harmful Substances in Adhesives for Interior Decoration and Renovation Materials
GB 30981-2020 Limitations on Volatile Organic Compounds (VOC) in Building Adhesives
GB/T 35601-2017 Green Product Evaluation - Waterproof and Sealing Materials
was established in 2011. As a national high-tech enterprise recognized by the Zhejiang Provincial Higher People's Court as a judicial authentication institution for construction engineering quality, we specialize in structural performance testing and safety assessment of construction projects, special equipment, communication towers, electromagnetic environments, large bridges, and building safety appraisal.
The company has more than 100 professional and technical personnel, over 90% of whom hold various medium and senior technical certificates. Equipped with complete testing equipment worth over RMB 10 million, our business scope covers the whole country.
