PVC Waterproofing Membrane
PVC Waterproofing Membrane – Single-Ply Polyvinyl Chloride Waterproof Sheet for Roof, Tunnel & Green Roof Projects
PVC Waterproofing Membrane (Polyvinyl Chloride Waterproof Sheet) is a high-performance thermoplastic single-ply waterproof material extruded with PVC resin, plasticizers, UV stabilizers, anti-oxidants and special additives. It is divided into homogeneous type, fiber-backed type, polyester fabric reinforced type and glass fiber reinforced type. With excellent hot-air weldability, root penetration resistance, chemical resistance and weather stability, it forms a seamless integral waterproof system after hot welding, widely used for industrial roofing, underground tunnel, basement, planting roof, sewage tank and landscape pool projects globally.
Core Product Features
Our PVC waterproof membrane adopts imported environmentally friendly stabilizers, fully compliant with GB 12952-2011, ASTM D4434 and EN 13956 standards. Key advantages as below:
Seamless Hot-Air Welding Performance
Perfect thermal fusion property, adjacent sheets can be fused by hot-air welder to form integrated waterproof layer; weld strength reaches over 75% of base material tensile strength, no leakage risk at joints. Weldable even after long-term outdoor aging, convenient for later maintenance and repair.
Outstanding UV & Weather Aging Resistance
White reflective top surface reflects sunlight heat, effectively reducing building roof heat load. Special anti-UV formula enables exposed service life over 25 years; underground covered projects can last more than 50 years without cracking or powdering.
Root Penetration Resistant for Green Roof
Special anti-root formula can resist plant root piercing, the ideal waterproof material for roof garden, vertical greening and landscape planting layers, combining waterproofing and root barrier in one layer.
Wide Temperature Adaptability & High Flexibility
Maintain soft toughness at -25℃ low temperature without brittle cracking; no flowing or deformation under high temperature up to 130℃. Good elongation to absorb foundation settlement and structural deformation, avoid waterproof layer cracking.
Full-Spectrum Chemical Corrosion Resistance
Stable against acid, alkali, salt, industrial sewage, seawater and weak chemical solvent erosion, suitable for sewage treatment pools, chemical containment, coastal engineering and landfill auxiliary waterproof lining.
Breathable & Environmentally Recyclable
Good vapor permeability to discharge residual moisture inside roof structure, eliminate blistering of waterproof layer. Non-toxic, halogen-free optional flame retardant grade (Class B1 fire resistance), fully recyclable after service life, low carbon and eco-friendly.
Fast & Simple Construction
Support loose laying, mechanical fixing, full adhesion and ballasted construction methods. Wide roll width up to 2m reduces joint quantity, greatly shorten construction period and labor cost compared with multi-layer asphalt waterproof materials.
Standard Specifications
Custom thickness, width, length, color (white/grey/black) and anti-root/flame retardant formula available on request.
表格
Membrane Type Thickness (mm) Standard Width (m) Roll Length (m) Tensile Strength Main Application Scenarios
H Homogeneous PVC 1.2 / 1.5 2.0 20 ≥12MPa Small basement, indoor wet space, landscape pool lining
L Fiber Backed PVC 1.2 / 1.5 2.0 20 ≥14MPa Exposed single-ply roof, factory steel roof waterproofing
P Polyester Reinforced PVC 1.5 / 2.0 2.0 / 2.05 15 / 20 ≥800N/5cm Planting green roof, tunnel lining, large commercial roof
G Glass Fiber Reinforced PVC 1.5 / 2.0 2.0 15 ≥900N/5cm Sewage tank, chemical pool, saline coastal projects
Key Technical Indicators
Low temperature bending: -25℃ no crack
Elongation at break: ≥200%
Root penetration resistance: Pass GB/T 328.17 anti-root test
Water vapor transmission: Moderate permeability to release substrate moisture
Oxygen index of flame retardant grade: ≥32 (Class B1 fireproof)
Wide Application Scenarios
- Industrial & Commercial Roof Engineering Single-ply exposed roof for factory buildings, logistics warehouses, shopping malls, stadiums, steel structure roof. White reflective surface reduces air conditioning energy consumption, long-term exposed waterproof without protective covering.
- Tunnel & Underground Municipal Works Highway/railway tunnel secondary lining, subway tunnel waterproof layer, basement floor & sidewall, foundation pit anti-seepage, underground pipe gallery integral waterproof system.
- Green Roof & Landscape Projects Roof garden, vertical greening, community lawn planting layer, artificial lake, fountain, fish/shrimp culture pool. Unique anti-root performance prevents plant roots from piercing waterproof membrane.
- Environmental & Chemical Engineering Sewage sedimentation tank, sludge storage pool, industrial wastewater treatment tank, coastal seawall anti-seepage, landfill auxiliary lining. Resist long-term corrosion of acid, alkali and salt medium.
- Civil & Special Construction High-rise building basement, underground parking lot, swimming pool, bath center, underground comprehensive pipe gallery, cold storage roof thermal & waterproof integrated system. Product Classification H Homogeneous PVC Membrane Pure PVC sheet without internal reinforcement, low cost, for small indoor concealed waterproof projects. L Fiber Backed PVC Membrane Non-woven fleece attached on single side, good adhesion with adhesive, ideal for full-adhered roof systems. P Polyester Fabric Reinforced PVC Membrane Polyester scrim inside, ultra-high tensile & tear resistance, anti-root penetration, mainstream for green roof and large exposed roof. G Glass Fiber Reinforced PVC Membrane Glass fiber mesh inner reinforcement, excellent dimensional stability, no thermal shrinkage, suitable for chemical and coastal corrosive environment. Flame Retardant PVC Grade Special halogen-free flame retardant additives, meet Class B1 fire standard, for shopping mall, stadium and public building roof. Standard Construction Guidance Level base substrate, remove sharp stones, steel bars and sundries; lay polyester geotextile as protective cushion if substrate contains coarse aggregate. Unroll PVC membrane with overlap width ≥100mm; clean overlap surface before hot-air welding to avoid impurity affecting weld tightness. Control welding temperature at 400–550℃, adopt double-track hot weld seam; conduct vacuum leak detection after welding to inspect joint sealing. For vertical wall and detail nodes (corners, pipe roots), use special PVC accessories to make arc transition, enhance waterproof reliability. Mechanical fixing system: fix membrane edge with stainless steel pressure strips and screws, spacing 300–500mm to prevent wind uplift for exposed roof.
