3M™ Fire Barrier Sealant IC 15WB+

Intumescent Firestop Protection

As a supplier and trader of 3M™ Fire Barrier Sealant IC 15WB+ in Saudi Arabia, we provide a high-performance, cost-effective firestop sealant designed to maintain the integrity of fire-rated walls, floors, and construction joints.

3M™ Fire Barrier Sealant IC 15WB+ is a one-component, latex-based, intumescent firestop sealant that expands when exposed to high temperatures, helping prevent the spread of fire, smoke, and harmful gases through service penetrations and building openings.
This easy-to-apply, gun-grade sealant dries to form a durable, monolithic fire barrier while also reducing airborne sound transmission. It is suitable for a wide range of mechanical, electrical, and plumbing (MEP) applications and adheres to most common construction materials, including concrete, gypsum board, metal, wood, plastic pipes, and cable jackets.
Engineered for both new construction and retrofit projects, it provides up to 3 hours of certified fire protection and supports compliance with international building and fire safety standards.

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Key Features

Up to 3 Hours Fire Resistance

Provides certified fire protection for penetrations and joints in fire-rated assemblies for up to 3 hours.

Intumescent Technology

Expands when exposed to high temperatures to seal gaps created by melting combustible materials.

Excellent Acoustic Performance

Acts as a sound barrier with an STC rating of up to 54 when installed in tested wall assemblies.

Re-Enterable and Repairable

Allows future cable additions, maintenance work, and modifications with minimal disruption.

Easy Water Cleanup

Tools and excess material can be cleaned with water before curing.

Easy One-Part Application

Ready-to-use formulation requires no mixing and can be applied using a standard caulking gun.

Strong Adhesion

Bonds effectively to concrete, gypsum board, metals, wood, cable jackets, and various plastic materials, including CPVC.

Sag-Resistant Formula

Suitable for vertical, horizontal, and overhead applications.

Paintable Finish

Can be painted after curing to blend with surrounding surfaces.

Low VOC & Halogen-Free

Environmentally responsible formulation that supports green building requirements.

Technical Specifications

Property	Specification
Color	Yellow
Application Temperature Range (ASTM C 1299)	40°F to 122°F (4°C to 50°C)
Service Temperature Range	-20°F to 180°F (-28°C to 82°C)
STC Acoustic Barrier (ASTM E 90 and ASTM E 413)	STC 54 when tested in an STC 54 rated wall assembly
Surface Burning (ASTM E 84)	Flame Spread: 5Smoke Development: 50
Hardness (ASTM D240 Shore A)	70
Tensile Strength	85 psi (0.59 MPa)
Volume Shrinkage (ASTM C 1241)	28%
VOC Less H₂O and Exempt Solvents*	< 2 g/L
Drying Time	Under typical conditions of 75°F (23°C) and 50% R.H., the sealant becomes tack-free in about 10 minutes and dry-to-touch in 30 to 60 minutes. Full dry time depends on ambient conditions and sealant volume. Typical dry rate is approximately 1/8 inch (3 mm) per day.