Vantell VSRU15500 Roofing Underlayment

Name: Vantell VSRU15500 Roofing Underlayment
Brand: Vantell
SKU: 128

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Product Overview

Vantell VSRU15500 Roofing Underlayment - Standard Type is designed for sloped roof installations, providing a reliable protective layer beneath the roof covering. It helps improve roof system durability by combining water resistance, weather protection, vapor transmission performance, and mechanical strength.
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>>>In roofing assemblies, the underlayment plays an important role in protecting the roof deck from wind-driven rain, temporary weather exposure, and moisture accumulation. VSRU15500 provides a continuous secondary water-resistive layer while allowing controlled vapor transmission to support long-term roof performance.
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>>>With strong tensile strength, nail tear resistance, low-temperature flexibility, and excellent impermeability, VSRU15500 is suitable for residential, commercial, modular, and prefabricated roof applications. It is supplied in a lightweight roll format for efficient installation on site.
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>>>As part of the Vantell building envelope moisture management system, VSRU15500 supports reliable roof protection and contributes to the long-term stability of the building envelope.
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>>>Key Features:
>>>• Standard roofing underlayment for sloped roof assemblies
>>>• Provides secondary water-resistive protection beneath roof coverings
>>>• Helps protect roof decks from moisture and weather exposure
>>>• Controlled vapor transmission performance
>>>• Strong tensile strength and nail tear resistance
>>>• Flexible performance under low-temperature conditions
>>>• Lightweight roll format for easy handling and installation
>>>• Suitable for residential, commercial, modular, and prefabricated buildings

Technical Data

Model: VSRU15500
>>>Product Type: Roofing Underlayment - Standard Type
>>>Width × Length: 1.5 m × 50 m
>>>Package: 72 rolls / pallet
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>>>Tensile Strength:
>>>Vertical: 129 N/mm
>>>Horizontal: 127 N/mm
>>>Test Standard: GB/T 328.9-2007
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>>>Stretch Rate at Maximum Force:
>>>Vertical: 50%
>>>Horizontal: 30%
>>>Test Condition: 23 ± 2 °C, test speed 100 mm/min
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>>>Impermeability:
>>>No leakage
>>>2000 mm water column for 2 hours
>>>Test Standard: JC/T 2291-2014
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>>>Low Temperature Bendability:
>>>No cracks
>>>-30 °C for 1 hour
>>>Test Standard: JC/T 2291-2014
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>>>Nail Tear Resistance:
>>>Vertical: 99 N
>>>Horizontal: 117 N
>>>Test Standard: GB/T 328.18-2007
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>>>Water Vapor Transmission Rate:
>>>21.2 g/(m²·24 h)
>>>Water method, 23 ± 0.6 °C, RH difference: 90 ± 2%

System Note: For best long-term performance, this product should be used as part of a complete Vantell building envelope moisture management system.

Key Applications

• Sloped roof underlaymentrn• Roof deck moisture protectionrn• Secondary water-resistive layer beneath roof coveringsrn• Residential roofing systemsrn• Commercial roofing systemsrn• Modular and prefabricated buildingsrn• Weather protection during roof construction