OEM Waterproof Vapor Barrier Membrane
PAC KING Waterproof Vapor Barrier Membrane is an advanced moisture control solution specifically engineered for the interior envelope. Designed to completely block indoor vapor and humidity from penetrating the insulation layer, it effectively prevents interstitial condensation, protects thermal performance, and acts as the foundational protector for the structural lifespan of modern buildings.
Core Selling Points & Performance Advantages
Engineered to meet stringent commercial procurement requirements for long-term durability and extreme environmental resilience.
Extreme Moisture & Air Block
Strictly controls water vapor transmission to an ultra-low level of ≤ 10 g/m²·24h and provides 2000 mm/2h watertight performance. Completely stops indoor moisture from reaching the building insulation.
High Elongation & Tear Resistant
Features a max tensile strength of ≥120N (MD) and an elongation rate of ≥50%. With ≥60N nail tear resistance, it guarantees absolute material integrity during stretching and mechanical fastening.
-30°C Freeze Resistance
Passed rigorous low-temperature flexibility tests, remaining structurally stable without cracking even at -30°C. Perfectly suited for high-latitude and extreme cold climate construction.
4-Month UV Resistance
Upgraded with up to 4 months of UV protection. This extended exposure window offers unmatched flexibility for large-scale projects and unpredictable overseas construction schedules.
Technical Specifications (Lab Certified)
Verified against comprehensive GB/T and JC/T testing standards for tear resistance, vapor permeability, and cold weather performance.
| Testing Item | Test Result | Test Standard |
|---|---|---|
| Max Tensile Strength (MD) | ≥ 120 N/50mm | GB/T 328.9-2007 |
| Max Tensile Strength (CD) | ≥ 80 N/50mm | |
| Elongation at Break | ≥ 50% | |
| Nail Tear Strength | ≥ 60 N | |
| Water-Tightness | 2000 mm/2h | GB/T 328.10-2007 |
| Low-Temperature Flexibility | -30°C, No Cracking | GB/T 328.15-2007 |
| Water Vapor Transmission Rate (WVTR) | ≤ 10 g/m²·24h | GB/T 1037-2021 |
| UV Resistance | 4 Months | JC/T2291-2014 |
Building Lifespan Foundation & System Synergy
The vapor barrier acts as the primary interior defense line, significantly reducing long-term maintenance costs and protecting HVAC and insulation efficiency.
Interior Insulation Protection
Installed directly over interior studs prior to drywall installation, it stops daily moisture (heating, breathing, showering) from migrating into the wall cavity. This fundamentally prevents condensation, steel rust, structural aging, and insulation failure.
For optimal energy efficiency, always pair this Vapor Barrier (Interior) with our Waterproof Breathable Membrane (Exterior). This dual-protection system blocks indoor moisture while allowing trapped cavity vapor to safely vent outward.
Global OEM Customization Capabilities
We empower B2B construction distributors with flexible manufacturing, private labeling, and stable bulk supply chains.
Brand Printing
Customized logo and grid line printing on the membrane to boost your brand visibility on every construction site.
Tailored Dimensions
Adjustable roll widths, lengths, and thicknesses to perfectly match local building codes and framing standards.
Stable Wholesale
High-capacity factory output supporting 20ft and 40HQ container orders with strict quality assurance and fast lead times.
Secure Your Supply Chain with PAC KING
Get factory-direct pricing on OEM vapor barrier rolls. Contact us for product samples, spec sheets, and full container quotes.
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