• Dual Function Protection – Serves as both an air barrier and weather resistive barrier (WRB), improving building envelope performance
• Long UV Exposure Window – Aluminum surface allows up to 2 years of exposure before siding or cladding must be applied
• High Strength & Flexibility – Elastomeric asphalt compound stretches over 800% without tearing, maintaining a watertight seal even with slight building movement
• Impermeable Protection – Rated at 0.00 perms for water vapor transmission, ensuring a complete moisture block
• Energy Efficient – Reflective aluminum surface deflects solar radiation, improving thermal performance
• Easy Installation – Supplied with a release liner for quick application; compatible with Polyguard primers and sealants

• Thickness: 40 mils
• Water Vapor Transmission (ASTM E 96 B): 0.00 perms
• Peel Adhesion to Primed Substrate (ASTM D 1000): 15 lbs/in width
• Tensile Strength Film (ASTM D 882): 5000 PSI
• Elongation of Rubberized Asphalt (ASTM D 412): >800%
• Low Temperature Flexibility: No effect at -15°F (-26°C)
• Service Temperature Range: -40°F to 160°F (-40°C to 70°C)
• Air Permeance – Concrete (ASTM E 2178): 0.0005 cfm/sf
• Air Permeance – DensGlass (ASTM E 2178): 0.0005 cfm/sf
• Fire Propagation (NFPA 285): Compliant
• Nail Sealability (ASTM D 1970): Pass
• Adhesion (ASTM D 903): Concrete: 9.51 lbs/in | DensGlass: 9.51 lbs/in | Lap Peel: 4 lbs/in

Surface Preparation:

• Substrate must be clean, dry, and frost-free
• Minimum application temperature: 40°F and rising
• Prime surfaces with 650 WB Liquid Adhesive (350–400 sf/gal) or ClearBond Adhesive (250–300 sf/gal)

Gap & Void Treatment:

• Fill joints up to ¾" wide, voids, and depressions with Blue Barrier® Gap Filler (BBGF)
• Larger gaps require a backer rod before sealant application

Membrane Installation:

• Install UV2-40 sheets horizontally or vertically with 2.5" side laps and 4" end laps
• Apply with 100% adhesion using a roller to ensure bond
• Shingle laps to properly shed water

Flashing Installation (Windows & Openings):

• Use UV2-40 flashing (6", 9", or 12" rolls) for sills, jambs, and heads
• Prime surfaces before applying flashing
• Seal all exposed edges with a 30-mil bead of BBGF

Substrate Compatibility:

• Wood sheathing (OSB, plywood)
• Concrete & CMU
• DensGlass® and gypsum sheathing
• Brick veneer (with separation felt at brick ledge)

⚠️ Note: Not intended for roofing or below-grade foundation waterproofing.