Dow Dowsil Firestop 400 Intumescent Acrylic Sealant Box of 12

Dow Dowsil Firestop 400 White Intumescent Acrylic Sealant 380ml Tube - Box of 12

Trade Box of 12 - Trade Price - Money Saver Deal

Barcode: 5011107561405

MPN: 2938863-12

Size: 380ml Cartridge

Dow Dowsil Firestop 400 Trade Deal Box of 12 an intumescent acrylic sealant for internal applications, developed to maintain the integrity of fire walls or partitions in homes office and warehouse buildings, Dowsil Fire stop 400 fire rated sealant with the correct joint application will give a two hour fire rating, uses are for internal perimeter pointing around doors and window frames, and in joints formed where fire rated partition sections meet.

Main Uses: For internal perimeter pointing around door and window frames, and in joints formed where fire rated partition sections meet fire ceilings and walls in integral house garages, in fact any area were services will pass through into another area, resists mildew and mould growth and can be painted with emulsion for decoration.

Dow Corning Dowsil Firestop 400 Intumescent Acrylic Sealant – Trade Box of 12 - 380ml, White.

Safeguard your projects with this specifically fire sealant designed to provide fire-rated protection, this intumescent sealant expands under high temperatures to form a heat-resistant barrier, slowing the spread of fire, smoke, and toxic gases. It adheres effectively to a variety of construction materials, including concrete, brick, and plasterboard, ensuring long-term fire safety in both commercial and residential buildings. With 12 cartridges in one trade pack, contractors can secure their projects with cost-effective, reliable fire protection while keeping their budget in check.

Why Choose Dow Dowsil Firestop 400 Trade Box of 12?

Dowsil Firestop 400 is a high-performance solution designed to meet stringent fire safety standards. Its intumescent formula allows it to expand and block the passage of fire and smoke through joints and penetrations in fire-rated walls, floors, and ceilings. This sealant also maintains flexibility, ensuring that it accommodates slight joint movement without compromising performance. For professionals handling large-scale projects, the trade pack of 12 provides substantial savings, improved efficiency, and consistent quality across multiple installations.

Dow Dowsil Firestop 400 Key Features

• Bulk Supply: Contains 12 cartridges (380ml each), ideal for large or multiple fire-rated projects.
• Fire-Resistant Protection: Expands under heat to form an insulating barrier, preventing the spread of fire, smoke, and toxic gases.
• Certified Fire Performance: Meets fire safety and building code requirements, providing up to 4 hours of fire resistance.
• Strong Adhesion: Bonds effectively to concrete, brick, metal, plasterboard, and other construction materials.
• Flexible and Durable: Accommodates slight joint movement without cracking or degrading, ensuring long-lasting fire protection.
• Professional White Finish: Provides a clean, neat appearance for both visible and concealed joints in fire-rated assemblies.
• Trade Price Value: Save on material costs with a competitively priced trade pack designed for professionals.

Also Available:

Dowsil Firestop 400 White Intumescent Acrylic Sealant 380ml in Singles

Applications: Dow Dowsil Firestop 400 Intumescent Acrylic Sealant is suitable for a variety of fire protection applications, including:

1. Fire-Rated Walls and Partitions: Provides critical fire-rated seals for expansion joints and penetrations in vertical assemblies.
2. Ceilings and Floors: Seals floor-to-wall joints and horizontal construction joints to prevent fire and smoke spread between levels.
3. Service Penetrations: Ensures fire protection around pipes, ducts, and cables passing through fire-rated barriers.
4. Compartmentalisation: Maintains the integrity of fire-rated compartments by sealing gaps and joints in fire-resistant materials.
5. Commercial and Residential Buildings: Suitable for offices, schools, hospitals, multi-storey apartments, and other structures requiring fire safety compliance.

Dowsil 400 Benefits of the Trade Box

• Cost Efficiency: The trade pack reduces the cost per cartridge, providing excellent value for contractors handling multiple fire-rated projects.
• Reliable Stock: Minimise project delays by keeping a steady supply of firestop sealant on hand.
• Consistent Performance: Maintain uniform fire protection and appearance across all installations with a trusted, high-performance product.
• Time-Saving Application: Easily apply with standard caulking guns to ensure smooth, controlled installation on-site.
• Enhanced Safety Compliance: Helps meet legal and safety requirements for fire-rated building construction.

Questions and Answers:

Dow Dowsil Firestop 400 Intumescent Acrylic Sealant FAQs

1. How does the intumescent property of Dow Dowsil Firestop 400 work during a fire?
The Dow Dowsil Firestop 400 sealant is designed with intumescent properties, which means it expands significantly when exposed to high temperatures. In the event of a fire, the sealant swells to many times its original size, creating a dense, heat-resistant barrier that blocks the spread of flames, smoke, and toxic gases. This expansion fills gaps and seals off pathways where fire and smoke might otherwise escape, helping to maintain the structural integrity of fire-rated walls, floors, and ceilings.

2. What fire safety certifications does this product have, and how does it help meet building code compliance?
The Dow Dowsil Firestop 400 sealant has been rigorously tested to meet fire resistance and safety standards, providing up to 4 hours of protection depending on joint configuration and size. These certifications demonstrate that the product complies with key fire protection requirements, helping contractors and builders adhere to building codes for fire-rated construction. By using certified firestop products, you ensure that your project meets legal safety requirements and minimizes fire-related risks.

3. Can this firestop sealant handle joint movement, and how does it maintain its integrity over time?
Yes, Dow Dowsil Firestop 400 is designed to accommodate slight joint movement. Its flexible acrylic-based formulation allows it to expand and contract with thermal changes, building movement, and vibrations without cracking or losing adhesion. This flexibility is crucial for maintaining the seal's integrity over time, ensuring that the fire-resistant barrier remains effective even in dynamic structures where minor movement is expected.

4. Is this sealant suitable for sealing service penetrations, and what types of penetrations can it protect?
Yes, Dow Dowsil Firestop 400 is ideal for sealing around service penetrations such as pipes, cables, and ductwork that pass through fire-rated walls, floors, and ceilings. By expanding under heat, the sealant creates a barrier that prevents fire and smoke from passing through these critical openings. This protection is particularly important for maintaining compartmentalisation within a building, preventing the rapid spread of fire between different areas. For optimal performance, ensure that the penetrations are properly prepared and primed before applying the sealant.

5. How does this sealant compare to other fire-rated sealants in terms of application and performance?
The Dow Dowsil Firestop 400 stands out for its combination of ease of application and high-performance fire protection. It is easy to apply using standard caulking equipment and can be tooled to achieve a clean, professional finish. Its intumescent technology provides reliable protection against fire, smoke, and heat, while its strong adhesion ensures compatibility with a wide range of construction materials. Compared to other fire-rated sealants, Firestop 400 offers excellent durability, long-term flexibility, and enhanced safety compliance, making it a preferred choice for both large and small fire-rated projects.

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