NSI Fireblock Combustible Fire Block Caulk Tube 662381055668 136 10.3

( Brand: Nsi ), ( Type: Caulk ), ( UPC: 662381055668 )

Review NSI Fireblock 136 Residential Rated Non combustible Fire Block 10.3 Oz Caulk Tube

The **NSI 662381055668 FireBlock 136 Non-Combustible Fire Block Caulk Tube** is a high-performance, Class A-rated fire protection product designed to create an impenetrable barrier against the spread of fire and smoke through penetrations in walls, floors, and ceilings. Engineered to meet stringent industry standards, including those set by the National Fire Protection Association (NFPA) and Underwriters Laboratories (UL), this fireblocking solution is specifically formulated to resist combustion, ensuring maximum safety in commercial, institutional, and residential construction environments. The product features a dense, non-combustible composition that remains stable under extreme heat, preventing the formation of toxic gases or embers that could ignite nearby materials. Its flexible yet durable formula allows for easy application around pipes, conduits, cables, and other penetrations, filling gaps and voids with precision to maintain structural integrity while adhering to fire-rated assemblies. With a 10.3-inch tube length, this fireblock provides ample coverage for medium to large penetrations, reducing the need for multiple applications and minimizing labor time. Ideal for use in fire-rated walls, floors, and ceilings, this product is particularly well-suited for applications in healthcare facilities, schools, hotels, and high-rise buildings where fire safety is paramount. Its smooth, professional finish ensures a neat appearance while its resistance to moisture, mold, and degradation guarantees long-term reliability, even in demanding environments. Whether used during new construction or retrofitting existing structures, the NSI FireBlock 136 delivers a dependable, code-compliant solution for protecting against fire spread and enhancing overall building safety.

**Pros and Cons of buying a NSI 662381055668 Fireblock 136 Non-Combustible Fire Block (10.3 oz Caulk Tube)**

### **Pros**

1. **High Fire Resistance** This product is specifically designed as a non-combustible fire block, meaning it meets strict fire safety standards (likely UL or FM approved) to prevent the spread of flames through gaps in walls, floors, or ceilings. This is critical in commercial, industrial, or high-risk residential applications where fire containment is mandatory.

2. **Durability and Longevity** Non-combustible materials are generally resistant to degradation from heat, moisture, or chemical exposure, ensuring long-term performance without significant wear or failure.

3. **Versatility in Application** The 10.3 oz tube size is practical for small to medium gaps (typically up to 1 inch), making it suitable for sealing around pipes, cables, and penetrations in fire-rated assemblies. It can be used in both new construction and retrofitting projects.

4. **Easy to Apply** Like most caulk tubes, this product is designed for straightforward application with a standard caulk gun, reducing labor time and complexity. The non-combustible nature also means it doesn t require special handling during installation.

5. **Compliance with Building Codes** Many jurisdictions require fire blocks in walls and floors to meet fire safety regulations (e.g., NFPA, IBC, or local codes). Using an approved product like this ensures compliance, avoiding potential fines or construction delays.

6. **Low Maintenance** Once installed correctly, non-combustible fire blocks require minimal upkeep, as they are not prone to burning, rotting, or degrading over time.

7. **Chemical Resistance** Non-combustible materials often resist oils, solvents, and other chemicals, which can be beneficial in industrial or commercial settings where exposure to such substances is likely.

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### **Cons**

1. **Cost** Non-combustible fire blocks are typically more expensive than standard caulks or sealants. The price reflects the specialized materials and testing required to ensure fire resistance, which may increase project costs.

2. **Limited Gap Size** The 10.3 oz tube is optimized for small gaps (up to 1 inch). For larger penetrations, multiple tubes or a different product (e.g., fire-rated foam or rigid insulation) may be required, adding complexity and cost.

3. **Application Constraints** Non-combustible materials may not be as flexible as some combustible or synthetic sealants, which could make installation more challenging in irregular or tight spaces. Over-application or improper technique can compromise effectiveness.

4. **Potential for Overuse** Some contractors or DIYers may mistakenly use this product where a simpler, less expensive sealant would suffice (e.g., for non-fire-rated gaps). This can lead to unnecessary expense without added benefit.

5. **Limited Color Options** Like many fire-rated products, this caulk may only be available in standard colors (e.g., white or gray), which could be less aesthetically pleasing in certain applications compared to decorative or colored sealants.

6. **Storage and Handling** Non-combustible materials may require specific storage conditions (e.g., dry, temperature-controlled environments) to maintain their properties, which could be an oversight in some projects.

7. **Testing and Certification Verification** Ensuring the product meets the required fire ratings (e.g., ASTM E84, UL 1479) is critical. Purchasing from uncertified or counterfeit sources could result in a product that fails to perform as intended.

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### **Conclusion**

The **NSI 662381055668 Fireblock 136 Non-Combustible Fire Block** is a high-quality, specialized product designed for applications where fire safety is paramount. Its strengths lie in its reliability, durability, and compliance with fire codes, making it ideal for commercial, industrial, or high-risk residential projects. However, its higher cost, limited gap size, and potential overuse in non-critical applications are drawbacks to consider.

### **Recommendation**

- You are working on a project that requires **fire-rated penetrations** (e.g., walls, floors, or ceilings in commercial buildings, hospitals, or high-rise structures).

- You need a **permanent, low-maintenance solution** for sealing gaps around pipes, cables, or ducts where fire spread must be prevented.

- Compliance with **building codes or insurance requirements** is mandatory, and you want to avoid risks associated with non-certified sealants.

- Your project involves **small, non-critical gaps** where a standard silicone or acrylic caulk would suffice (cost savings may be significant).

- The gaps you need to seal are **larger than 1 inch**, as this product may not be practical without additional materials.

- You are working on a **budget-sensitive project** where the higher cost of fire-rated materials could be better allocated elsewhere.

For most **fire-rated construction projects**, this product is a worthwhile investment in safety and compliance. However, always verify the specific fire rating requirements of your project and consult with a fire protection specialist if unsure.

Details:

The Fireblock 136 is a residential rated, non-combustible fire block manufactured by NSI. This product is specifically formulated for sealing and protecting against fire, providing a reliable solution residential use. It is designed in a 10.3 oz caulk tube format, making it convenient and easy to apply.

specifications sealantadhesivee:

• brand: Nsi
• type: Caulk
• upc: 662381055668

offer sealantadhesivee:

• quantity: 1
• started: February 5, 2026
• availability: In Stock
• options: Ship-to-home
• best offers: True
• sold: 0

shipping sealantadhesivee:

• carrier: USPS
• service: USPS Ground Advantage
• type: Fixed
• class: Standard
• traNsit: 4-9 Days
• cost: $9.99

payments sealantadhesivee:

• other
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seller sealantadhesivee:

• rating: 97.2%
• # reviews: 1332
• city: Phoenix, Arizona

returns sealantadhesivee:

• policy: No Returns

general sealantadhesivee:

• Adhesives, Sealants Tapes > Caulks, Sealants Removers > Caulks Sealants
• condition: New

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