Sealtite B, Type II  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. Sealtite B, Type II forms a watertight, dust-proof, airtight, soundproof urethane insulated seal. The exposed surface is an independent sealant such as a silicone, urethane, and polysulfide.

Basic Use:  Sealtite B, Type II is composed of a high quality, elastic, closed-cell, polyurethane foam with excellent movement capabilities. Sealtite B, Type II is installed in place of, or behind, ordinary backer rod but performs as a super sealant independent of the surface caulking. Joints using Sealtite B, Type II look like ordinary caulked joints but are superior in watertight performance.

Typical Applications

• Vertical and horizontal movement - Expansion, control, and isolation joints
• Large joints subject to sealant failure
• Masonry applications requiring a low pressure, resilient seal
• Sealing hard to reach and concealed areas/voids
• 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
• Roofing and flashing details requiring flexibility
• Other joints requiring dual, independent sealant

Advantages

• Provides a dual and economical sealant that works independently of the primary sealant
• Allows for up to 50% total movement
• Provides for a waterproof joint even if the caulk fails
• Excellent compression recovery
• Conforms to varying joint contours and sizes
• Ideal for sealing hard to reach joints and sealing concealed voids
• Ease of "take off" and ordering (same material for various size joints)
• Ease and speed of installation

Unique Properties

• Resilient and flexible (long term)
• Low distortion/expansion
• Warranted for up to 10 years
• Allows for up to 50% joint movement
• Maintenance Free

Limitations

• Store materials in dry, enclosed area, off the ground, out of direct sunlight.
• Do not install when raining or snowing.
• Not UV Resistant
• Do not use scrap materials
• For joint movement greater than 50% total movement specify Sealtite B