Tyvek® Fluid Applied WB+™

Building Solutions | Tyvek® Fluid Applied WB+™
Commercial | Residential | Multifamily | Wall

Next-generation protection for commercial construction

Developed with silyl-terminated polyether (STPE) technology, Tyvek® Fluid Applied WB+™ delivers a durable weather barrier that’s tailored to meet the demands of heavy commercial construction projects.


Tyvek® Fluid Applied WB+™

For next-generation weather protection designed for commercial construction, look to DuPont™ Tyvek® Fluid Applied weather barriers with silyl-terminated polyether (STPE) technology. DuPont™ Tyvek® Fluid Applied Weather Barrier+™ Systems provide water and fluid applied air barrier protection designed for the unique demands of heavy commercial construction projects.


Features & benefits

Feature Benefit
STPE (silyl-terminated polyether polymer) technology
  • Exceptional elongation and recovery
  • Minimal shrinkage and cracking during curing
  • Will not wash off when exposed to liquid water
  • Low temperature application to 25°F
  • Minimal surface preparation required
  • 2-3 times the coverage in one coat
  • Seamless protection for building envelope
  • Reduces air infiltration and exfiltration
  • Helps insulation perform to specified R-Value
  • Improves energy efficiency
  • Vapor Permeable
  • Helps prevent metal corrosion and wood rot
  • Reduces risk of mold growth
  • Durable
  • Enables long-term performance
  • Application to a variety of substrates
  • Offers easy installation

    Physical properties

    Method Unit Value
    Solids ASTM D2369 % 99
    Skinover Time @ 50% R.H. 70 deg F ASTM C679 Hrs 1-2
    Air Penetration Resistance ASTM E2178 cfm/ft2 @ 75 Pa (1.57 psf) 0.0002
    Gurley Hill (TAPPI T-460) sec/ 100cc >10,000
    Wall Assembly Air Penetration Resistance ASTM E2357 cfm/ft2 @ 75 Pa <0.0002
    ASTM E283 cfm/ft2 @ 75 Pa <0.0002
    Wall Assembly Air & Water Leakage ASTM E1677 Type Type I
    Water Vapor Transmission ASTM E96-00 Method B perms 22 @ 25 mils thick
    Water Penetration Resistance AATCC 127 cm >1000
    Wall Assembly Water Penetration Resistance ASTM E331 Tested to 15 psf No leakage
    Low Temperature Crack Bridging ASTM C1305 No cracking at 25 mil thickness Pass
    Adhesion Strength - Concrete ASTM D7234 psi >33
    Adhesion Strength - Exterior Gypsum (delaminates fiberglass top sheet) ASTM D4541 psi >25
    Peel Strength ASTM D903 lbf/in (aluminum) 13 cohesive failure
    Adhesion-in-Peel ASTM C794 lbf/in (mortar) Pass
    Tensile ASTM D412 psi 140
    Elongation at Break ASTM D412 % 320
    Recovery (held at 300% elongation) ASTM D412 % 99
    Hardness ASTM D2240 Shore A 34