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Breathable and Airtight Air Barrier Membranes

Protect your building envelope by letting vapor pass through (breathable), but not air or water.

Energy Savings 

Air is expensive to treat. Owners must heat and cool air so stopping air movement, in and out of the building, using an air barrier, saves energy for the life of the building.

Moisture Management

A building has to battle constant moisture infiltration from occupants and Mother Nature, so having an Air Barrier that offers a high drying capacity
mitigates moisture damage within the building envelope and allows building materials to dry out.

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Complete Air Barrier System 

VaproShield’s breathable airtight field membranes; rough opening flashing materials and rain screen design components are designed and tested to work together—reducing your liability for potential expensive moisture-related repairs. The solution-based approach to the building envelope offers benefits for Building Owners, General Contractors and Installers.


lower installation cost, less inventory, minimal training


apply in extreme conditions, use common job site tools


install a single Air Barrier system


zero VOC’s, no toxins, no special equipment

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Simplified Air Barrier System

The VaproShield Air Barrier System was designed to maximize profitability plus minimize inventory and field training. The self-adhering field membranes require no primers, joint/gap fillers or tapes—eliminating the need for time intensive substrate and rough opening preparation.

Nearly 99% of installers reuse our products on their next jobs because managing only two SKU’s in the field improves labor estimates and drastically reduces installation time.

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Works With Your Substrate and Cladding

VaproShield membranes work on virtually all substrates; gypsum, plywood,extruded/molded polystyrene insulation, concrete block, and mineral wool.

Diverse cladding and multiple insulation materials — easy enough — VaproShield membranes offer proven compatibility.

  • Open Joint Facades
  • Fiber Cement
  • ACM
  • Stucco 
  • Brick
  • Stone
  • Rigid Insulation
  • Mineral Wool 


Extreme Durability

Fully exposed [no cladding] VaproShield membranes have been proven durable in the most extreme conditions – hurricanes, arctic blasts and frigid northern temperatures. Architects, consultants, owners and contractors were relieved to see the membrane still intact after severe weather damaged other materials onsite.

All Climate Construction

Noted as the most Phase Construction Friendly Air Barrier in the industry, VaproShield membranes can help keep your construction schedule on track. Easily installed in virtually all weather conditions, including below freezing temperatures.

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Best In Class


ASTM E2357 compliant in multiple assembles, Class A fire rating, 20 year material warranty, sustains 180 days UV and climate exposure


VaproShield membranes have been successfully included in numerous NFPA 285 assembly tests. It’s important to understand that NFPA 285 is a full-scale, two-story, exterior wall assembly test, measuring fire characteristics of all the applicable building materials in the assembly not just a single component like the WRB. The ASTM E84 test measures the surface burning flame spread and smoke developed of an individual material. All VaproShield membranes are ASTM E84, Class A rated.

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Innovation Leads To Savings

With material and labor the VaproShield Air Barrier System offers up to 50% savings compared to major competitors.

Since we have eliminated the labor intensive job of primer application, joint and corner taping/masking – VaproShield is the proven winner!

Millions of sq.ft. have been installed throughout North America and multiple national construction projects have chosen VaproShield’s Air Barrier System.

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What About The Frog? 

VaproShield membranes were inspired by a frog’s permeable, breathable skin, so we have always been green.

Our membranes are built to make sustainability intuitive. They contain zero VOC’s and do not require toxic/flammable primers, making them safe to transport, handle and install.

VaproShield performs voluntary audits and our transparency paid off. We were awarded the coveted Declare Label for the WrapShield SA Self-Adhered System, placing VaproShield at the forefront of the transparency movement.


pdf Download Our PDF (7.97 MB)

Many companies talk about a healthy home as a new idea.
At VaproShield, we’ve always been green, since our products were inspired by a
frog’s permeable breathable skin, we understand sustainability is more than just a buzzword.

Contact us to learn more about creating a healthy home

Unparalleled Moisture Protection for Your Home


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Windows Are The Most Vulnerable

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A new Texas home suffered extensive moisture damage - “the windows were suspected to be a contributing factor” typically due to “inadequate weather barrier and window detailing.”


Insufficient Drainage in the Wall Cavity

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An incorrectly installed stucco system caused massive deterioration and biological growth within 12 months.


Windows Require Proper Flashing

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Proper detailing around windows requires a shingle overlap and high performance waterproof flashing material. VaproShield offers a complete system of flashing materials.


Rainscreen Drainage Cavity

 Wrap RS Residentail

By leaving a small air flow cavity behind the cladding, created by mesh or battens, residual water can drain away from your home. This is called rain screen design, a proven method to keep the wall cavity dry.

Home Owner Benefits

WrapShield SA

  • Reduce moisture-related problems (mold, mildew, rot) in wall cavities by allowing vapor and moisture to escape instead of being trapped in the wall/roof
  • Increase healthy airflow throughout the home helping to reduce allergens
  • Save energy by installing a continuous air barrier
    around the home (roof and walls)
  • Commercial-grade product (millions of square feet installed) with proven success in all climates and conditions

RevealShield SA

When homeowners opt for open-joint veneers, the exposure to sun and rain behind the joints is inevitable.

  • RevealShield SA offers all the advantages of WrapShield SA plus the added benefit of long term UV stability.

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Breathable and Air Tight

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Similar to Gore-Tex® WrapShield SA Self-Adhered stops air leakage and provides exceptional water holdout and breathability.

Healthy Home Exterior Wall Cavity Design

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Contact us to learn more about creating a healthy home

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VaproBond is a single component 100% silicone sealant designed to function as an adhesive sealant and an all-weather silicone liquid flashing material.


VaproBond is appropriate for above-grade applications to concrete, masonry, natural stone, structural sheathing, architectural metal panels, painted metals, glass, PVC, FRP, EPDM, all VaproShield WRB/Air Barrier membranes, and most other building materials.


  • Approved for use as a flashing material with metal framing systems. Not recommended for wood applications. VaproShield recommends VaproLiqui-Flash™ with wood applications.
  • Usable over a wide temperature range. -50 ° to 300 °F (-45° to 149 °C)
  • Cured service temperatures: -50 ° to 300 °F (-45° to 149 °C)
  • Excellent weatherability, UV stable for extended exposure
  • Remains flexible under extreme temperatures
  • Compatible with an extensive list of materials from various manufacturers, view list here.


VaproBond is available in 20 fl oz (592 g/ml) sausages

Sealant Flashing

¼” (6 mm) bead will adhere 125 ft. (38 m) of overlapping membrane

30-45 wet mils (0.76 – 1.14 mm) covers 6-8 ft2 (0.56-0.74 m2) Not recommended for wood applications.


  • Apply using a professional caulking gun.
  • Use a DRY joint knife, trowel, or spatula to spread.
  • Do not use soapy water or alcohol when tooling or spreading.


  • Store VaproBond unopened sausages at temperatures lower than 80 °F (27 °C).
  • Do not open sausage until preparation work has been completed.
  • Do not alter or mix with other chemicals.
  • When stored at or below 80 °F (27 °C) VaproBond has a shelf life of 12 months after the date of manufacture.
  • Do not double stack pallets.
  • Dispose of unused product and container in accordance with local, state and federal regulations.


  • Immediately remove all excess VaproBond in undesired areas with mineral spirits.
  • Clean tools and equipment with mineral spirits or similar solvent immediately after use.
  • Observe all manufacture’s safety precautions.
  • Remove cured VaproBond using a sharp-edged tool.
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1. Install WrapFlashing SA Self-Adhered into sill with 2.75” folded into Rough Opening (R.O.) 9” left on face, with bottom 6” of release film to remain attached.

2. Install jamb pieces with 2.75” folded into R.O. 9” to be left on face. 
 3  VaproBond Flashing Installation 1 install
3. Install head piece with 2.75” folded into R.O. 9” to be left on face. Roll all WrapFlashing SA (orange) sections with weighted roller to ensure full contact.

4. Using the sausage gun, apply VaproBond in a zigzag pattern on the wall face surrounding the rough opening.

 VaproBond Flashing Installation 2 installation  VaproBond Flashing Installation 3 install
5. Immediately spread the applied material with a putty knife creating a 1” (25 mm) border around the rough opening.

6. Apply additional VaproBond in zigzag pattern on all inner surfaces of the rough opening.

VaproBond Flashing Installation 4 install VaproBond Flashing Installation 5 install

7. Immediately spread until all surfaces are completely covered and substrate below is no longer visible (approximately 30-45 wet mils (0.76-1.14mm)).

8. Allow VaproBond to set, then inspect for voids and apply additional VaproBond as needed to achieve complete coverage. RO is now ready for window and head flashing installation (by others).

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*Roll all WrapFlashing SA (orange) sections with weighted roller to ensure full contact.

Sealant Between Membrane

VaproBond Sealing Installation 1

Overlap vertical seams by 12” (305 mm) minimum. Apply VaproBond adhesive sealant bead just below Integrated Tape line at the vertical seam joint.


Use hand roller to seal the seam for an air and water tight seal.

Tear and Abrasion Repair

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Typical installation tears or abrasions Remove excess membrane from tear until smooth with substrate. Cut and apply a patch of self-adhered field membrane or VaproFlashing SA Self-Adhered, remove release film, smooth over with hand pressure.
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Use hand roller to ensure complete adhesion. Abrasion Repair: apply VaproBond over abrasion and tool with a DRY joint knife, trowel or spatula. Hole Patch Repair: seal the reverse lap (at top) with VaproBond to ensure a water and air tight seal.
Reverse Lap Sealant
Bond INstall 1 Bond INstall 2
Apply 3/8” (9.5mm) minimum bead line of VaproBond to the reverse lapped membrane. Use a DRY joint knife or trowel to tool VaproBond to shed water.
Other Typical Sealant Uses
Bond INstall 3 Bond INstall 4
Head flashing sealant Sealing VaproSilicone Transition Materials
Bond INstall 5 Bond INstall 6
Penetration Sealant Interior Air Seal
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Outward Floorline Movement Joint Inward Floorline Movement Joint

Earn Continuing Education Credits

CEU Arch Record

Suitable vapor-permeable water-resistive-barrier and air-barrier membranes, roof underlayments, and flashing accessories can deliver high-performance enclosures for cross-laminated timber buildings.

Take the Course Now