3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 4.5 Gallon (Pail), 1 Each/Drum

• Excellent caulk rate and sealant can be applied with conventional caulking equipment
• Exceptional weatherability for durability during construction
• Fire resistance tested for construction joint (including curtain wall) systems in accordance with ASTM E 1966 (UL 2079), ASTM E 2307
• Firestop tested up to 3 hours in accordance with ASTM E814 (UL 1479) and CAN/ULC-S115
• Formulated as a re-enterable and repairable solution
• Minimizes noise transfer (STC-Rating of 56 when tested in STC 56-rated wall assembly)
• Non-slump, halogen-free formula provides strong adhesion
• Sealant is paintable with primer

3M Fire Barrier Water Tight Sealant 1000 NS is a non-slump, ready-to-use, single component, neutral cure, silicone sealant that cures upon exposure to atmospheric humidity to form a flexible firestop seal. This water tight sealant help control the spread of fire, smoke and noxious gases before, during and after exposure to fire.

Formulated for Sealed Protection
We formulated 3M™ Fire Barrier Water Tight Sealant 1000 NS as a single component, neutral cure, silicone sealant. This ready-to-use sealant cures upon exposure to atmospheric humidity to form a flexible firestop seal that helps control the spread of fire, smoke and noxious gases before, during and after exposure to fire. When properly installed, this water tight sealant provides up to 3-hour protection in tested and listed systems and meets UL Water Leakage Test, W Rating - Class 1 requirements for systems tested and listed in accordance with ANSI/UL 1479. We designed this non-slump firestop sealant as a re-enterable and repairable solution primarily used on vertical surfaces.

Recommended Applications

• Dynamic and static construction joints
• Perimeter fire barrier system and curtain wall joints
• Firestop blank openings
• Penetrating items that pass through fire-rated floor or wall assemblies

Meets Industry Demands
A durable solution, 3M™ Fire Barrier Water Tight Sealant 1000 NS is halogen-free, provides an excellent caulk rate and offers exceptional weatherability. This elastomeric sealant offers compression and extension capability of ±31% for dynamic and static construction joints. In addition, we formulated this sealant to be paintable with primer and compatible with CPVC piping.

This product also provides acoustic benefits by minimizing noise transfer (STC-Rating of 56 when tested in a STC 56-rated wall assembly) and acts as a smoke seal for installations requiring the L-Rating. This sealant meets the intent of LEED® VOC environmental regulations, International Building Code (IBC) and other key life safety building code requirements.

All-In-One Sealant Solution
For a sealant ready to shield and protect from both water and fire, look no further than 3M™ Fire Barrier Water Tight Sealant 1000NS. This water tight sealant meets both UL 1479 (ASTM E 814) firestop tests and UL W-Rating for water tightness when used on floor penetrations. Discover the benefits of an all-in-one solution for water infiltration and fire containment.

Reliable and Affordable Fire Protection
Effective and easy to install, 3M™ Fire Barrier Water Tight Sealant 1000 NS is part of our family of fire protection products that offer the broadest, long-lasting solutions for a variety of commercial, industrial and residential applications. As a trusted leader in the fire protection industry, 3M offers a broad line of affordable products designed to meet the most demanding firestop requirements. Find the solution you need from the industry-preferred line of fire protection products.

Trusted 3M Fire Protection

The 3M Fire Barrier Water Tight Sealant 1000 NS offers reliable fire protection designed for construction joints and curtain wall systems. This gray sealant comes in a 4.5 gallon pail, making it easy to handle on site.

Its single component, neutral cure silicone formula cures with atmospheric humidity to form a flexible firestop seal. This model ensures safety by controlling fire, smoke, and gas spread during emergencies.

Water Tight Sealant Benefits

This 4.5 gallon pail of 3M Fire Barrier Water Tight Sealant 1000 NS provides excellent water tightness, meeting UL W-Rating standards for floor penetrations. Its non-slump formula ensures strong adhesion on vertical surfaces.

Besides fire resistance, it also prevents water infiltration, making it a dual-purpose sealant. The gray color blends well with many construction materials for a clean finish.

Durable Construction Joint Seal

Designed for dynamic and static construction joints, this 3M sealant offers ±31% compression and extension capability. It’s ideal for perimeter fire barrier systems and curtain wall joints, ensuring long-lasting protection.

The 4.5 gallon pail format supports large projects, while the sealant’s paintable surface allows for customization with primer to match surrounding finishes.

Acoustic And Fire Ratings

3M Fire Barrier Water Tight Sealant 1000 NS minimizes noise transfer with an STC rating of 56 when tested in a rated wall assembly. It also provides up to 3 hours of firestop protection per ASTM and UL standards.

This gray sealant meets key building codes including IBC and LEED VOC regulations, making it suitable for commercial, industrial, and residential applications requiring fire and smoke containment.

Pack Size And Format

Supplied in a convenient 4.5 gallon pail, this 3M Fire Barrier Water Tight Sealant 1000 NS is ready to use with conventional caulking equipment. The large pack size supports efficient application on bigger jobs.

The single component, neutral cure silicone formula ensures easy installation and repairability. This format helps contractors maintain productivity while meeting strict fire protection standards.