Home/Product Center/Building Envelope Membranes/Reflective Roofing Underlayment
All productsVantell Product System

Vantell Reflective Roofing Underlayment

A reflective sloped-roof underlayment combining weather defense with a radiant-heat-control surface.

Product Overview

Vantell VSRU15500A Reflective Roofing Underlayment is a high-performance sloped roof underlayment designed to provide reliable waterproofing, weather protection, and radiant heat control beneath roofing materials.

With an advanced reflective surface, VSRU15500A helps reduce radiant heat transfer through the roof assembly, supporting better thermal control and improved energy efficiency in hot or high-solar-radiation climates.

Product Information

ModelVSRU15500A
Width × Length1.5 m × 50 m
Package90 rolls / pallet

Key Benefits

  • Reflective surface helps reduce radiant heat transfer through the roof assembly

  • Solar reflectance ≥ 85% to help reduce radiant heat gain

  • Provides waterproofing and weather protection beneath roofing materials

  • Helps improve roof assembly thermal control and energy efficiency

  • High tensile strength for durable roofing installation

  • Good nail tear resistance and low-temperature flexibility

  • Suitable for sloped roof applications in hot and sunny climates

Technical Data

Tensile Strength (PULL)        Vertical: 676 N/mm
>>>        Horizontal: 621 N/mm   GB/T 328.9-2007     
Stretch Rate at Max Force        Vertical: 16%
>>>        Horizontal: 15%   23 ± 2 °C, test speed 100 mm/min     
ImpermeabilityNo leakage, 2000 mm water column for 2 h   JC/T 2291-2014
Low Temperature BendabilityNo cracks, -30 °C for 1 hour   JC/T 2291-2014
Nail Tear Resistance        Vertical: 300 N/mm
>>>        Horizontal: 236 N/mm   GB/T 328.18-2007     
Solar Reflectance≥ 85%
Water Vapor Transmission Rate0.51 g/(m²·24 h)   Water method, 23 ± 0.6 °C, RH diff.: 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

  • Reflective sloped roof underlayment applications
  • Radiant heat control beneath roofing materials
  • Weatherproofing layer for roof deck protection
  • Energy-saving roofing systems in hot climates
  • Residential and light commercial sloped roof assemblies