12OZ Fire Block Sealant

12OZ Fire Block Sealant is a 12-ounce expanding fire-block foam or caulk sealant used to seal penetrations and gaps in residential and commercial construction.

🔧 What it’s used for:

• Sealing around:
  • Electrical boxes and conduit
  • Plumbing penetrations
  • HVAC openings
  • Stud and top-plate penetrations
• Reducing airflow and drafts
• Helping slow the spread of:
  • Flame
  • Smoke
  • Toxic gases

⚙️ Typical features:

• Expanding polyurethane foam or fire-resistant sealant
• Orange color for easy inspection identification
• Fire-block rated for Type V residential construction
• Paintable after curing on many products
• Indoor/outdoor compatible depending on formulation
• Meets ASTM E84 or related fire-block standards on many brands

🧠 Important distinction:

A fire-block product is not the same as a true firestop system for rated assemblies. Fire-block foam is generally intended for:

• Wood-frame residential construction
• Draft stopping
• Non-rated penetrations

Common examples:

• GREAT STUFF Fireblock
• Touch ’n Foam FireBreak
• 3M FB-Foam
• Handi-Foam Fireblock