Sealtite B  is used behind the backer rod and serves as a dual sealant system when used with a high quality urethane or a silicone joint sealant. It is designed with a bond-breaker for caulk.  When installed in a joint, Sealtite B's internal recovery force holds it in place while the sealant compound prevents penetration of air, dust, noise or water. Sealtite B can extend up to 100% and return to seal the joint. It works on a completely different principle from caulk and therefore is not subject to the same type of failures. Superior to double liquid sealant applications.

Basic Use:  Sealtite B is composed of polyurethane, micro-cell foam waterproofed with a hydrophobic, flame retardant, acrylic polymer compound that is UV stable and chemically resistant. Sealtite B is installed in place of ordinary backer rod but performs as a super sealant independent of the surface caulking.

Typical Applications

• Vertical and horizontal movement - Expansion, control, and isolation joints
• Large joints subject to sealant failure
• Pre-cast concrete walls - tilt-up walls
• Exterior panel systems - Masonry, granite, metal, EIFS, and curtain walls
• Joints that are difficult or impossible to repair after installation
• Other joints requiring a dual, independent sealant

Advantages

• Provides a dual, and economical sealant that works independently of the primary sealant
• allows for up to 100% movement
• Provides for a waterproof joint even if the caulk fails
• Ease of installation
• Excellent compression recovery
• Permanently conforms to varying joint contours
• Pre-sized for the joint - applicator cannot use too little or too much

Unique Properties

• Resilient and flexible to -40°F (long term)
• Not based on cheap asphaltic or bitumastic impregnation
• Paintable with water based paints
• Allows for up to ± 50% joint movement
• Maintenance Free

Limitations

• Joints must be sized by measuring every 5-7 ft. (1.524 - 2.137 meters) to ensure gap opening is uniform and depth is sufficient for the supplied material.
• Do not install when substrate or ambient temperatures are below -14°F (-25°C) or above 95°F (35°C) without special procedures from Schul International Co., LLC
• Store material at a minimum of 68°F (20°C) for a minimum of 24 hours prior to installation, regardless of temperature at location of installation.
• Store materials in dry, enclosed area, off the ground, out of direct sunlight.
• Do not install when raining or snowing.
• Do not unwrap material until ready for installation into joint as packaging maintains material compression.
• Do not use scrap materials

Not Intended for Joints: 

• Submerged in water
• In contact with harsh chemicals
• In roofing applications
• Joints requiring pick resistance