Foster – Adhesives, Sealants, and Coatings for Insulation System Integrity

Our Foster Collection features a comprehensive range of professional-grade adhesives, sealants, mastics, and coatings designed to protect, seal, and enhance the performance of thermal and acoustic insulation systems. Manufactured by H.B. Fuller under the Foster® brand, these products are trusted globally for their durability, chemical resistance, and compliance with HVAC and industrial specifications.

Product Overview

Foster products are engineered to meet the demands of mechanical insulation, cryogenic systems, and fire-rated assemblies. The collection includes:

• Adhesives: High-strength bonding agents for insulation boards, pipe sections, and duct wraps (e.g., Foster® 82-77 Cryogenic Adhesive, 81-33 F.R Adhesive)
• Sealants: Flexible, moisture-resistant sealants for joints, penetrations, and vapor barriers (e.g., Foster® 95-44 Elastolar, 95-50 Flextra)
• Mastics: Protective coatings for insulation surfaces, including weatherproof and fire-rated options (e.g., Foster® 60-39 Monolar Mastic)
• Encapsulants and Coatings: Surface treatments for asbestos abatement, mold remediation, and insulation protection (e.g., Foster® 30-36 Sealfas, 30-60 Thermfas Heat Transfer Cement)

Applications

• Sealing and bonding insulation in HVAC, plumbing, and industrial systems
• Protecting insulation from moisture, UV, and mechanical damage
• Enhancing fire resistance and vapor control in service risers and enclosures
• Encapsulating hazardous materials and supporting mold remediation
• Supporting compliance with ASHRAE, ASTM, and IMO standards

Performance Benefits

• Excellent adhesion to metal, insulation, and cladding surfaces
• Resistant to water, oil, chemicals, and temperature extremes
• Fire-rated and cryogenic-compatible options available
• Supports long-term system integrity and energy efficiency
• Manufactured to meet rigorous safety and environmental standards