Sikagard® AWB 665

• ICC-IBC, ICC-IRC, ICC-IECC, and ABAA-compliant material
• ICC-ES AC 212: Acceptance Criteria for Water-Resistive Coatings used as Water-Resistive Barriers over Exterior Sheathing
• ICC-ES AC 148: Acceptance Criteria for Flexible Flashing Materials

Sikagard® AWB 665 is based on Silica Fortified Rubber™ chemistry.

Sikagard® AWB 665 has 2 years shelf life when properly stored

Store in unopened containers in a clean, dry place to protect liquid system components from freezing. Store at no less than 4 °C (40 °F) and below 49 °C (120 °F). Protect from extreme heat and direct sunlight. Do not stack pallets.

73%

Pull-Off Strength of Coatings

Tensile Strength after UV Exposure

Tensile Bond

Radiant Heat Multi-Story Tests

Compound Stability(Elevated Temperature)

Nail Sealability(without Sheathing Fabric)

Nail Sealability after Thermal Cycling

Drainage Efficiency

Allow to dry completely, typically 2 to 10 hours, before proceeding with cladding installation. Protect from rain and from temperatures less than 4 °C (40 °F) for 24 hours.

Substrate
ASTM C1177 Type Sheathing: 525 ft² (48 m²) per pail
Cement Board: 575 ft² (53 m²) per pail
Plywood*: 295 ft² (27 m²) per pail
Oriented Strand Board (OSB): 295 ft² (27 m²) per pail
Concrete Masonry Units (CMU)*:

• Standard Weight 265 ft² (24 m²) per pail
• Medium Weight 180 ft² (17 m²) per pail
• Light Weight 125 ft² (12 m²) per pail

Poured Concrete*:575 ft² (46m²) per pail

* Roll or spray/backroll for optimum coverage rate. Other application methods may provide less coverage. Actual results may vary depending on surface porosity, roughness, moisture uptake, or other factors.
Concrete/Masonry with Sika Thorocoat®-749 Block Filler: 500 ft² (46 m²) per pail

Airless spray equipment capable of spraying a minimum of 1 gallon per minute with a minimum size reversible tip of 0.019 is required. Airless equipment capable of greater deliveries can use larger tips. Tip sizes of 0.021 to 0.025 are recommended. Tip sizes greater than 0.025 provide too much material and affect the overall consumption of the material affecting the coverage rates. If pump filters are used, the minimum size of filter recommended is a 60 mesh filter. When spraying over Plywood and OSB, back rolling is recommended to completely encapsulate and create a pinhole-free application. For roller application, use a 13 mm (½") nap roller.

Substrates shall be dry, clean, sound, and free of dust, release agents, paint, or other residue or coatings. Verify substrate is, free of fins or planar irregularities greater than 6.4 mm in 3 m (¼" in 10').
Unsatisfactory conditions shall be reported to the general contractor and corrected before application of Sikagard® AWB 665.

Walls should be capped to prevent moisture and precipitation from entering the wall during construction. Limit UV and weather exposure of Sikagard® AWB 665 to a maximum of 180 days.

1. Use directly from original packaging or prepare in a container that is clean and free of foreign substances. Do not use a container that has contained or been cleaned with a petroleum-based product.
2. Mix Sikagard® AWB 665 with a clean, rust-free paddle and drill until thoroughly blended. Dilution of Sikagard® AWB 665 is not recommended.
3. Additives are not permitted.
4. Close the container when not in use.
5. Clean tools and equipment with water immediately after use. Dried material can only be removed mechanically.

USING Sikagard® AWB 900

Flashing Rough Openings:

1. Apply a bead of Sikagard® AWB 900 in each corner of the rough opening and tool Sikagard® AWB 900 into corners, ensuring that corners are fully sealed. Where wood bucks are used, tool Sikagard® AWB 900 into gaps between bucks and between the building structure.
2. Apply additional Sikagard® AWB 900 in a zigzag pattern onto the head, sill, jambs, and exterior substrate. Spread Sikagard® AWB 900 evenly across the rough opening to form a uniform, continuous, void- and pinhole-free membrane with a 12-20 mil thickness. Spread Sikagard® AWB 900 before it skins, typically within 2-3 minutes of application.
3. Extend Sikagard® AWB 900 membrane minimum of 4 inches onto the exterior wall, maintaining 12-30 mil thickness.
4. Allow Sikagard® AWB 900 to skin before applying Sikagard® AWB 665 to the sheathing. Lap air/water-resistive barrier a minimum of 2 inches onto Sikagard® AWB 900, creating a continuous, monolithic air/water-resistive barrier.
5. Allow Sikagard® AWB 900 to cure before installing windows.

Sheathing Joints:

Sikagard® AWB 900 can be used to fill sheathing joints up to ½" wide.

1. Apply a thick bead of Sikagard® AWB 900 to sheathing joints.
2. Spread Sikagard® AWB 900 evenly 1-inch beyond the joint on either side. Apply 20 mils of Sikagard® AWB 900 across the sheathing joint.
3. Spot fastener heads with Sikagard® AWB 900 or Sikagard® AWB 665.
4. Allow Sikagard® AWB 900 to skin before applying a subsequent coat of air/water-resistive barrier.
5. See the Sikagard® AWB 900 product bulletin for coverages and additional product highlights.