10.1 Oz. Acrylic Latex Sealant, Fire-Rated, Red

18858 DAP BLOCKADE® Fire-Rated Intumescent Acrylic Latex Sealant – Red, 10.1 oz Cartridge

The DAP 18858 BLOCKADE® Intumescent Acrylic Latex Sealant is a single-component, water-based firestop sealant formulated for professional fire-rated construction applications. Designed for use in wall and floor assemblies, BLOCKADE® expands when exposed to high temperatures, effectively sealing voids left by combustible materials and restoring the integrity of rated barriers. The formulation provides reliable adhesion to a wide range of substrates, including steel, copper, plastics, fiberglass, and concrete, and meets ASTM and UL fire test standards for penetration firestops.

Technical Specifications

• Model: 18858
• Manufacturer: DAP Industries
• Product Name: BLOCKADE® Fire-Rated Sealant
• Type: Single-Component Intumescent Acrylic Latex Sealant
• Color: Red
• Container Size: 10.1 oz Cartridge
• Base Material: Acrylic Latex
• Composition: Limestone, White Mineral Oil, Pentaerythritol, Melamine, Silica Amorphous, Propylene Glycol, Soda Lime Borosilicate Glass, Quartz
• Form: Paste
• Setting Time: Approximately 120 minutes
• Curing Time: 14–28 days (depending on application conditions)
• Temperature Range (Application): 15°F to 120°F (-9°C to 49°C)
• Specific Gravity: 1.45
• pH: 7–12
• VOC Content: 16 g/L
• Adhesion: Excellent unprimed adhesion to metals, plastics, wood, and masonry substrates
• Applicable Materials: Steel, Copper, Plastic, Fiberglass, ABS/PVC, Wood, Concrete
• Flexibility: High elasticity and movement capability for dynamic joints
• Paintability: Paintable after full cure
• Fire Rating Compliance: ASTM E814 / UL 1479 Fire Tests for Penetration Firestops

Professional Notes

BLOCKADE® is engineered for general firestopping applications involving both combustible and noncombustible penetrations in rated walls, floors, and partitions. Upon exposure to heat, the intumescent compounds expand to fill voids left by melted or burned materials, maintaining the integrity of the fire-rated assembly. The formulation exhibits strong adhesion without the need for primers, maintaining flexibility to accommodate minor joint movement. The product’s non-toxic, water-based composition allows for clean application and tooling using standard caulking equipment. Once fully cured, the sealant can be painted to match surrounding surfaces without compromising performance.

Summary

The DAP 18858 BLOCKADE® Fire-Rated Intumescent Acrylic Latex Sealant provides a reliable and compliant firestop solution for professional installations. Designed for ease of application and long-term stability, it delivers certified fire resistance per ASTM E814 and UL 1479 standards. With its intumescent expansion capability, superior adhesion to multiple substrates, and durable, paintable finish, BLOCKADE® is a field-proven choice for sealing penetrations and joints in rated assemblies across commercial and industrial construction projects.