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VaproSmart Installation Instructions

  pdf Installation Instructions (PDF) (1.71 MB)

 Tools & Accessories

Staple Gun Corrosion-resistant
staples		 Box Knife VaproRoller
Part No. 60855190
 

VaproShield
Sausage Gun
Part No. 60159800

 VaproFlashing™ SA or approved
single-sided sheathing tape		 VaproAirSeal™  

Compatible Assemblies

Wood Stud Framing

 Metal Stud Framing

Delivery, Packaging And Storage

Store roll materials in original packaging at temperatures between 40°F and 120°F (4ºC - 49ºC). Protect materials from direct sunlight and inclement weather until ready for use.

Climate and UV Exposure

  • Up to 12 months UV and climate exposure prior to cladding installation.
  • Acceptable for open joint cladding installations.

Substrate Preparation

  • Ensure framing is clear of nails, splinters and all unnecessary protrusions that could damage the membrane.
  • Check that framing and substrates are structurally sound and capable of supporting the air barrier system.

Safety

  • Read the full label and SDS for precautionary instructions before use. Use proper safety equipment and jobsite controls during application and handling.
  • Work crews are safe around VaproShield membranes.
  • VaproSmart ICL contains zero VOCs or toxins.
Do's  Don'ts
  • DO use VaproShield approved products for this system
  • DO determine horizontal or vertical installation
  • DO ensure you have the required overlaps both horizontally and vertically
  • DO install membrane printed side facing the interior
  • DO use only recommended attachment methods
  • DO inspect all seams, overlaps, edges and penetrations for complete
    sealing and adhesion to optimize product performance
  • DON’T install over nails and other protrusions
  • DON’T store in direct sunlight or over 120°F (-49°C)
  • DON’T use alternative attachment methods, other than outlined in installation instructions.
  • DON’T install printed side facing outward

 

 

Best Practice Installation

Note: Before beginning, make sure all sheathing materials are clean, free of dust, frost, overnight dew and trimmed flush with framing members at rough openings and that all materials, sausage gun, and putty knife are on site. Evaluate substrate for any inefficiencies and cracks.

 
Step 1: Identify Roll Size
Confirm roll size: 9’8” or 59” (2.95 m or 1.5 m).

Step 2: Workspace Preparation
2A. Ensure the wall/ceiling substrate is smooth and structurally sound.

2B. Remove nails, splinters, protrusions, dust, grease, and debris.

Verify the workspace is clean and all required installation tools are available.

Step 3: Positioning
Based on framing and wall height determine horizontal or vertical installation.

Step 4: Measure and Cut Membrane
4A. Cut the membrane to span the full length of the wall plus min. 6” (15.2 cm) extra on each end for overlaps and sealing.
4B. Ensure minimum 1” (2.5 cm) excess at floor and ceiling for sealing.
4C. Install the printed side facing the interior of the building.

Keep sheets flat and tension-free—do not excessively stretch the membrane.

5. Attachment
VaproSmart can be attached to either wood studs or metal framing.
Review Steps 5.1 and/or 5.2 for best practice installation.
 

Step 5.1: Wood Frame Attachment
Using a staple gun and corrosion-resistant staples fasten the starting edge of the membrane to the studs.

5.1A Fastener spacing: 12–16” (31-41 cm) on center, ideally within overlap areas.

Align the membrane with framing and maintain smooth, wrinkle-free placement.

Step 5.2: Metal Framing Attachment

Secure VaproSmart to metal framing using one of the following methods:

  • VaproAirSeal or specified non-curing acoustic sealant
  • Specified Double-sided construction tape
  • Specified Spray adhesive

Press the membrane firmly onto the framing to ensure continuous, smooth contact with the frame surface. Hand pressure is acceptable when using approved attachment methods; however, pressure rolling is recommended when practical to promote consistent adhesion. Align the membrane with framing and maintain smooth, wrinkle-free placement.

Step 6: Overlaps and Seam Taping

6A. Overlap adjoining sheets by a min. of 3” (7.6 cm) on horizontal and/or vertical seams.

  • Before taping, ensure the overlap area is clean.
  • Apply VaproFlashing SA or approved sheathing tape centered over the seam, press firmly to ensure adhesion.
  • Avoid wrinkles or “fishmouths” in taped areas.

6B. Seal base overlap with VaproAirSeal or specified non-curing acoustic sealant. Press firmly to ensure adhesion.

Step 7: Final Inspection
7A. Inspect all seams, overlaps, edges, and penetrations for complete sealing and adhesion.

Repair any gaps, punctures, or unsealed areas using membrane patches and tape.

Optional: perform air leakage testing to verify air barrier continuity prior to drywall installation.

 

Penetrations and Rough Openings

A. Large penetrations or openings: patch with membrane offcuts, overlap at least 3”, (7.6 cm) and seal with VaproFlashing SA or approved sheathing tape.

B. Small penetrations (electrical boxes, conduit, pipes): cut membrane carefully and seal with VaproAirSeal, non-curing acoustic sealant, or sheathing tape.

C. Windows, doors, and rough openings: fold membrane into opening, secure with fasteners, and seal perimeter with VaproAirSeal.

 

Service Cavity and Insulation Coordination

If installing a service cavity or loose-fill insulation, ensure the membrane is supported and remains flat.

Avoid punctures or tearing when trades access the wall cavity.

 

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