hagen 160813 0111 editweb2VaproBond™ is a single component 100% silicone sealant used to bind layers of VaproShield membranes to each other or typical construction material surfaces. It can also be used as a liquid-applied flashing component with metal framing systems.

  • UV stable, black silicone sealant and all-weather flashing material
  • Binds layers of VaproShield membranes and other typical construction materials
  • Creates watertight and airtight details
  • Applies in -20° (-6° C) and above
  • No primers, easy to gun and apply


  • No primer, easy to gun and apply, offers excellent weatherability
  • Allows for liquid flashing in below freezing temperatures
  • Binds layers of VaproShield membranes to each other and other building materials, creates a watertight, airtight seal
  • Simplifies process of producing watertight, airtight details
  • Remains flexible and pliable in extreme temperatures
  • UV stable, black silicone-based adhesive sealant
  • Meets or exceeds ASTM-C- 920 type S, Grade NS, Class 25
  • Flashing Coverage: 5-8 ft(0.56-0.74 m²)/sausage
  • Sealant: 125 lin.ft/sausage


  • Concrete
  • Masonry
  • Natural stone
  • Structural sheathing
  • Painted Metals
  • Glass
  • PVC
  • FRP
  • EPDM
  • Dry wood
  • Architectural Metal Panels
  • Most building materials, urethane, and acrylic sealants and coatings


Composition Modified Silicone
Application Temperature 20°F to 120°F (-6.7°C to 49°C)
Service Temperature minus 50°F (-45°C) - 300°F (149°C)
UV Exposure Indefinite
Sausage Weight 20 fluid ounces (0.59 L)
[approximate weight 0.8 kg (1.8 lb)]
VOC Content 80 g/L
Storage and Handling 20 oz (.57kg)
Application as Sealant 1/4” (6 mm) bead
Application as Flashing Apply at 30-50 wet mil (0.76 - 1.27mm)
Curing and Drying At 77°F (25°C) and 50% relative humidity, product is tack-free 25-35 minutes.
Higher temperature and/or humidity will shorten this time.
Cured service temperatures: -50° to 300°F (-45° to 149°C).
Warranty 20 year material
Tensile Strength ASTM D412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension 1.13 MPa (165 psi)
Elongation at Break ASTM D412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension 1500%
Modulus, 100% Elongation ASTM D412 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension 0.23 Mpa (33 psi)
Water Vapor Transmission
Water Method
24.4°C (76.0°F) 50 %RH
ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials 6.5 Perm (grains/hr•ft2•inchHg) at 0.36 mm (14 mil)
372 ng/Pa•s•m2 at 0.36 mm (14 mil)
Water Vapor Transmission
Dynamic Relative Humidity
Measurement (23°C 50 %RH)
ASTM E398 Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement 2.19 Perm (grain/h•ft2•inchHg) at 0.79 mm (30 mil)
125 ng/Pa•s•m2 at 0.79 mm (30 mil)
Peel Strength ASTM C794 Standard Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants PASS ≥ 5 pli

Typical Uses: Sealant

Sealant Image webUse VaproBond adhesive sealant to create a watertight, airtight seal at the vertical seams when installing VaproShield mechanically attached WRB/Air Barriers.

1 Sausage = 125 lin.ft.

Window Sealant webA. Fully embed head flashing (by others) in VaproBond over Vapro-SS Flashing™.
B. Seal rough opening corners with a bead of VaproBond.

For all penetrations: tool VaproBond evenly at least 2” onto the face and at least 1” out along all sides of the penetration

Typical Uses: Flashing

VaproBond Flashing Components 1017171. WrapFlashing SA Self-Adhered (W: 6 ½”, 11 ¾”, 19 2/3”) is pre-cut field membrane. Simply cut WrapFlashing SA into appropriate lengths and apply to face and inside of rough opening. Saves labor, saves time, convenient.

2. Create waterproof interface by applying VaproBond to inside of rough opening and 1" on face.

1 Sausage = 8 sq.ft. Flashing Coverage

Typical Uses: Repair

Repair Detail VaproBond Step 1Membrane hole prior to repair Repair Detail VaproBond Step 2Patch hole with WrapShield SA
Repair Detail VaproBond Step 3Apply VaproBond at a minimum 3/8” bond line to reverse lapped membrane Repair Detail VaproBond Step 4Tool sealant with DRY joint knife, trowel, or spatula


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