Mulco Acoustik Soundproof Sealant

The Mulco Acoustik Vapor Barrier and Soundproof Sealant is a professional-grade, synthetic rubber-based butyl compound engineered for high-performance acoustic isolation and vapor barrier continuity. This specialty sealant remains permanently tacky, flexible, and non-skinning, allowing it to effectively absorb acoustic vibrations and block airborne sound transmission through walls, ceilings, and floors. Formulated for concealed assemblies, it prevents air drafts and moisture infiltration by maintaining a continuous, airtight seal that accommodates structural movement without cracking or tearing.

Brand: Mulco

Model: 156650

Key Features and Technical Specifications

• Acoustic Dampening: Minimizes sound transmission and structural vibrations in multi-layer drywall assemblies.
• Permanently Flexible: Non-drying, non-skinning formula adapts to building settling and seasonal expansion.
• Vapor Barrier Continuity: Seals overlaps in polyethylene vapor barrier sheets and rigid insulation panels.
• Aggressive Adhesion: Bonds securely to wood, gypsum, steel, aluminum, concrete, and polyethylene.
• Substrate Safe: Non-corrosive composition will not damage or degrade polystyrene insulation boards.
• Cartridge Volume: 300 mL (10 oz) standard caulk cartridge.
• Color: Aluminum Gray / Black.
• Temperature Resistance: Service range spans from -30°C to 50°C (-22°F to 122°F).
• Application Environment: Intended for concealed joints; cannot be painted or left exposed to ambient air.

Condition:  Brand New

• Functionality: 10/10
• Aesthetics:  10/10

Price of New (Rona): $18.79 (plus GST)

Our Price (Cowboy Tools): $16 (GST Included)