Foster® 30-45 Foamseal Sealant is a flexible, fire-resistive, polyurethane-based aerosol foam sealant designed to effectively seal joints and cracks. It provides high insulation values, excellent adhesion, and has been tested for flame spread and smoke development. Ideal for a wide range of sealing applications where fire resistance is required.

Specifications and Properties

• Type: Polyurethane-based aerosol foam sealant
• Packaging: 12 x 310 ml tubes per box
• Color: Typically off-white to tan (varies by batch)
• Service Temperature Range: -40°F to 200°F (-40°C to 93°C)
• Flame Spread: 25 or less (when tested as per ASTM E 84)
• Smoke Developed: 50 or less (when tested as per ASTM E 84)
• Tack-Free Time: Approximately 10 minutes
• Cure Time: 24 hours (1-inch bead at 70°F and 50% relative humidity)
• Shelf Life: 12 months when stored in unopened containers at temperatures between 60°F and 90°F (15°C and 32°C)

Features and Application

• Fire-Resistive: Meets strict fire codes for flame spread and smoke development.
• Insulation: Provides high insulation values to improve energy efficiency.
• Adhesion: Bonds to most construction materials without the need for a primer.
• Flexibility: Remains flexible to accommodate movement and settling.
• Ease of Use: Ready to use in convenient aerosol tubes for quick application.
• Applications: Ideal for sealing around pipes, ducts, vents, and electrical penetrations. Suitable for both interior and exterior use in commercial, industrial, and residential buildings. Can be used in place of traditional firestop sealants in wall and floor penetrations.