Metacaulk

Metacaulk Fire Stopping Products include fire rated sealants, sprays, device openings, wrap strips, putties, and more.  

Firestop Sealants & Fire Protection Solutions — Metacaulk Collection

Welcome to the ultimate Metacaulk firestop products collection — your trusted source for fire-rated sealants, joint strips, putties, and firestop materials engineered to protect buildings, occupants, and infrastructure from the deadly spread of fire, smoke, and hot gases. These advanced firestop systems are essential components of modern construction and renovation projects, offering reliable performance, code compliance, and proven fire protection for walls, floors, penetrations, joints, and control gaps.

Whether you’re a contractor, firestop installer, building inspector, or facilities manager, our Metacaulk lineup delivers industry-leading intumescent firestop solutions, backed by rigorous UL classifications and designed to meet the most demanding construction safety standards. This extensive collection empowers you to build safer structures and ensure peace of mind on every project.

What is Firestop & Why It Matters

Firestop refers to a range of products designed to restore the fire-resistance rating of walls and floors where they have been penetrated by pipes, cables, ducts, joints, or other openings — known as through-penetrations and construction joints. In the event of a fire, these specialized sealants and materials expand, charr, and form a protective barrier that restricts the spread of flames, smoke, hot gases, and even water for specified time ratings. Compliance with fire stopping requirements is critical for building safety, regulatory approval, and occupant protection, particularly in multi-story commercial, industrial, institutional, and residential buildings.

Metacaulk products are engineered to provide this crucial protection. They’re used in fire-resistance rated assemblies and tested according to UL, ASTM, and other key standards — making them ideal for firestop system designs in walls, floors, control joints, and dynamic movement spots.

Featured Metacaulk Firestop Products

Core Firestop Sealants

Metacaulk 1000 Firestop Sealant – A high-intumescent, one-component firestop sealant designed for both construction joints and through-penetrations. This water-based, VOC-compliant sealant provides excellent fire and smoke protection and cures to a flexible elastomeric seal that resists sagging. It expands under heat to block the spread of flames and hot gases — ideal for dynamic movement applications where joints and penetrations may shift during a fire event.

Metacaulk MC150+ Firestop Sealant – A versatile fire-rated sealant ideal for general construction joints and penetrations. Its water-based formulation expands when exposed to fire to form a resilient barrier that prevents fire, smoke, and hot gas migration, with an STC (sound transmission class) rating that also supports acoustic control in assemblies.

Metacaulk 1200 Firestop Sealant – General-use fire-rated mastic designed for construction joints and openings with dynamic movement. Its elastomeric membrane seals against flames, smoke, hot gases, and water intrusion, offering excellent adaptability and ease of application in horizontal and vertical firestop applications.

Supplementary Firestop Materials & Accessories

Metacaulk Mouldable Putty Pads – Flexible firestop putty pads easily conform to irregular shapes around electrical boxes, pipes, and conduits, creating a fire-resistant barrier where traditional sealants might not suffice.

Metacaulk Fire Barrier Mortar Bag – A rapid-hardening fire-resistant mortar ideal for larger gaps and voids in structural fire assemblies.

Metacaulk Box Guard Double Pad – Highly intumescent pad for electrical box firestopping, designed to expand and seal off openings to help maintain fire-resistance ratings in wall assemblies.

Metacaulk Intumescent Pipe Collar – Firestop collar used to protect pipes passing through walls/floors by expanding under heat to seal gaps around piping systems.

Metacaulk MC150+ 10.3 oz Cartridge Pack – A pack of firestop sealant cartridges, offering both convenience and value for large-scale fire stopping projects.

Performance, Compliance, and Application Benefits

UL & ASTM Fire Ratings

Metacaulk firestop sealants and accessories are tested and listed in numerous UL firestop systems and meet key standards such as ASTM E814, UL 1479, and UL 2079 for fire resistance and through-penetration performance. These ratings demonstrate their ability to withstand fire exposure for up to several hours, helping structures comply with building codes and safety requirements.

Intumescent Technology

Many Metacaulk products incorporate intumescent compounds that expand when exposed to elevated temperatures — significantly increasing in volume to form an insulating char that fills gaps, blocks flames, smoke, and hot gases, and preserves the integrity of fire-rated assemblies even under extreme conditions.

Flexibility & Movement Accommodation

Metacaulk sealants cure to elastomeric, flexible finishes that accommodate normal building movement caused by thermal shifts, vibration, settling, and seismic activity. This flexibility ensures that joints stay sealed during both everyday conditions and emergency situations, reducing the risk of failure during fire events.

Easy to Apply & Adapt

Metacaulk firestop products are engineered for straightforward application — compatible with caulking guns, trowels, bulk loading tools, and pumping systems. Most products require no dilution, mixing, or complex preparation, helping save time and reduce labor costs on job sites.

Paintable & Interior Friendly

A number of Metacaulk sealants cure to a paintable surface, allowing finished installations to blend seamlessly with surrounding materials. VOC-compliant and mold-resistant formulations support interior environmental quality while meeting LEED and other sustainability goals.

Common Metacaulk Uses & Applications

Metacaulk firestop products are indispensable in a wide range of applications, including:

• Through-penetration firestopping around pipes, conduits, cables, and ducts in walls and floors
• Construction joint sealing in fire-rated partitions and floor assemblies
• Control joints and dynamic movement gaps in concrete and masonry structures
• Electrical box fire protection using putty pads or firestop strips
• Acoustic firestop systems combining fire resistance with sound transmission control
• Retrofit and new construction firestop installations

Because building codes require fire resistance for both life safety and property protection, quality firestop products like Metacaulk are essential for compliance and certification during inspections and permitting.

Choosing the Right Metacaulk Product

Selecting the correct firestop product depends on your specific application. Consider:

• Type of opening — narrow penetration vs. large joint
• Material to be sealed — concrete, gypsum, masonry
• Movement expected — static vs. dynamic
• Fire-rating requirement — 1- to 4-hour assemblies
• Installation environment — interior, exterior, wet conditions

Our collection includes options suited for commercial buildings, industrial facilities, healthcare spaces, educational institutions, residential developments, and more.

Build Safer with Metacaulk

Investing in quality firestop solutions like those in this Metacaulk collection ensures you’re protected by trusted fire-protection technology designed for maximum performance, compliance, and durability. From everyday construction sealing to critical safety barriers in high-occupancy buildings, Metacaulk products deliver peace of mind and help you meet stringent safety standards.

Start browsing our collection now to find the right firestop sealants and accessories for your next project — and build with confidence that your structures will stand up to both fire and time.