1. Sealant & Adhesives For Sale
  2. sku: 19147166918022773
  3. OSI 445008618636

OSI Quad Window Door Spray Foam Sealant 7445008618636 21.1 Oz. 12-PACK

Osi 445008618636 Quad 21.1 Oz. Window And Door Spray Foam Sealant 12-pack

( Brand: Osi ), ( Part Type: Window Spray Door ), ( Compatible Install Surface: Concrete, Fiberglass, Metal, Pvc/cpvc Pipes, Wood ), ( Cure Time: Hours ), ( Dry To Touch: Min ), ( Insulation Features: Paintable, Stainable ), ( Insulation R-value: R5 ), ( Insulation Type: Spray Can ), ( Number Of Pieces: 12 ), ( Product Weight: Oz ), ( Returnable: 90-day ), ( Coverage Area: Sq Ft ), ( UPC: 445008618636 )

Review OSI Quad 21.1 Oz. Window And Door Spray Foam Sealant 12-pack

The **OSI 445008618636 Quad 21.1 Window and Door Spray Foam Sealant (12-Pack)** is a high-performance, professional-grade insulation and air sealing solution designed to create an energy-efficient, draft-free barrier between windows, doors, and other building openings. Engineered for precision and durability, this two-component, polyurethane-based foam expands rapidly upon application, filling gaps, cracks, and voids with a dense, rigid seal that resists compression, moisture, and temperature fluctuations. Ideal for both residential and light commercial projects, the Quad 21.1 delivers an optimal balance of flexibility and strength, ensuring long-term adhesion to a variety of surfaces, including wood, metal, masonry, and drywall. Its low-expansion formula minimizes over-spray and waste, making it efficient for sealing tight spaces such as window frames, door jambs, electrical outlets, and HVAC penetrations without excessive bulk. The 12-pack format provides ample coverage for larger projects, with each can yielding approximately 21.1 cubic inches of foam, allowing for comprehensive sealing of multiple openings in a single session. Beyond its primary function as an insulator, this sealant also acts as a soundproofing barrier, reducing noise transmission through walls and openings, and its resistance to mold and mildew ensures a healthy indoor environment. Whether used during construction, renovation, or seasonal weatherproofing, the OSI Quad 21.1 offers a reliable, no-sag solution that enhances structural integrity while significantly improving energy efficiency and comfort. Its ease of use, combined with professional-grade performance, makes it a trusted choice for contractors, DIY enthusiasts, and homeowners seeking a permanent, high-quality seal.

### **Pros and Cons of buying a OSI 445008618636 Quad 21.1 Window Door Spray Foam Sealant (12-Pack)**

#### **Pros:**

1. **High-Quality Sealant** The Quad 21.1 is a premium, low-expansion spray foam designed for sealing gaps around windows, doors, and other openings. It provides a durable, airtight barrier, improving energy efficiency and reducing drafts.

2. **Versatile Applications** Suitable for both interior and exterior use, making it ideal for home insulation, weatherproofing, and preventing air leaks in various construction and renovation projects.

3. **Easy to Apply** The spray foam comes in a convenient can format, allowing for straightforward application without requiring professional tools (though a spray foam applicator may be needed for optimal results).

4. **Long-Lasting Performance** Once cured, the foam remains flexible and resistant to settling, ensuring long-term sealing effectiveness against moisture, air, and pests.

5. **Fire-Rated (Class B)** Meets fire safety standards, providing some protection against fire spread compared to other sealants.

6. **No-Sag Formula** The low-expansion design minimizes sagging, making it suitable for vertical surfaces like windows and doors.

7. **Cost-Effective for Bulk Use** A 12-pack offers a good quantity for larger projects, potentially reducing per-can costs compared to smaller packs.

8. **Reduces Energy Costs** By sealing gaps, it helps maintain indoor temperatures, lowering heating and cooling expenses over time.

9. **Resistant to Moisture and Mold** When applied correctly, it helps prevent moisture intrusion, reducing the risk of mold and mildew growth.

10. **Professional-Grade** Often used by contractors, indicating reliability for both DIYers and professionals.

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#### **Cons:**

1. **Requires Proper Application** Improper use (e.g., over-expansion, incorrect gap sizing) can lead to poor sealing, waste, or even damage to frames. A spray foam applicator is recommended for best results.

2. **Not for Large Gaps** Best suited for gaps up to 1 inch; larger gaps may require bridging or additional materials.

3. **Curing Time** The foam takes time to fully cure (typically 24 48 hours), during which it may expand slightly and require trimming.

4. **Messy Application** Spray foam can be difficult to clean off surfaces (especially skin and tools) once applied, so protective gear (gloves, goggles) is essential.

5. **Limited Flexibility Over Time** While initially flexible, prolonged exposure to UV light (if used externally) or extreme temperatures may cause some degradation.

6. **Environmental Concerns** Contains hydrofluorocarbons (HFCs), which are greenhouse gases. While less harmful than older CFC-based foams, they still contribute to global warming.

7. **Cost Compared to Alternatives** More expensive than caulk or weatherstripping for small projects, though it offers superior long-term performance.

8. **Professional Installation May Be Needed** For optimal results, especially in complex installations (e.g., around windows with multiple gaps), hiring a professional may be preferable.

9. **Storage Requirements** Unused cans should be stored properly (cool, dry place) to prevent degradation before use.

10. **Not a Structural Sealant** While it seals gaps well, it should not be used as a primary structural adhesive or load-bearing material.

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### **Conclusion:**

The **OSI Quad 21.1 spray foam sealant** is a high-quality, professional-grade product ideal for those seeking a durable, energy-efficient solution for sealing windows and doors. It excels in performance, versatility, and long-term durability but requires careful application to avoid waste or poor results. It is best suited for DIYers with some experience in insulation projects or for professionals working on larger-scale sealing tasks.

For **small, simple gaps** (e.g., drafty windows), alternatives like **caulk or weatherstripping** may be more cost-effective. However, if you need a **permanent, airtight seal** for improved insulation and energy savings, this foam is a strong choice especially when purchasing in bulk (like the 12-pack).

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### **Recommendation:** **Buy this product if:**

- You are tackling a **larger project** (e.g., insulating multiple windows/doors) and want a **long-lasting, high-performance seal**.

- You are comfortable with **spray foam application** (or plan to use a professional applicator).

- You prioritize **energy efficiency** and **reducing drafts** over short-term cost savings.

- You need a **fire-rated, low-expansion foam** for both interior and exterior use.

**Avoid this product if:**

- You are working on **very small gaps** (caulk may suffice).

- You lack experience with **spray foam tools** and application techniques.

- You are on a **tight budget** for a one-time, minor repair.

- You need a **quick, temporary fix** (foam requires curing time).

**Final Verdict:** This is a **solid investment** for serious insulation projects, but ensure you have the right tools and knowledge to apply it effectively. For most homeowners, it s worth the cost for its durability and performance.

Details:

Quad 21.1 Oz. 100% Satisfaction, Satisfaction Guaranteed. Window and Door Spray Foam Sealant 12-Pack.

specifications sealantadhesivee:

  • brand: Osi
  • part type: Window Spray Door
  • compatible install surface: Concrete, Fiberglass, Metal, Pvc/cpvc Pipes, Wood
  • cure time: Hours
  • dry to touch: Min
  • insulation features: Paintable, Stainable
  • insulation r-value: R5
  • insulation type: Spray Can
  • number of pieces: 12
  • product weight: Oz
  • returnable: 90-day
  • coverage area: Sq Ft
  • upc: 445008618636

seller sealantadhesivee:

  • # reviews: 1151
  • rating: 99.8%
  • city: Lamar, Colorado

shipping sealantadhesivee:

  • type: Fixed
  • cost: $0.00
  • transit: 4-7 Days
  • class: Standard
  • service: Standard

offer sealantadhesivee:

  • started: May 29, 2026
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • quantity: 1

returns sealantadhesivee:

  • time: 30 Days
  • method: Money back
  • policy: Returns Accepted
  • paid by: Buyer

payments sealantadhesivee:

  • wallet: Paypal
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  • credit card: Diners-club

general sealantadhesivee:

  • Adhesives, Sealants Tapes > Caulks, Sealants Removers > Caulks Sealants
  • condition: New
part type: window spray door, compatible install surface: concrete, fiberglass, metal, pvc/cpvc pipes, wood, cure time: hours, dry to touch: min, insulation features: paintable, stainable, insulation r-value: r5, insulation type: spray can, number of pieces: 12, product weight: oz, returnable: 90-day, coverage area: sq ft,
category: business & industrial > adhesives, sealants tapes > caulks, sealants removers > caulks sealants, sku: 19147166918022773,
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1 offer $240.80 USD
  • New. Offer #1 priced at $240.80 + $0.00 shipping estimate = $240.80* total. OSI QUAD Foam adheres to all types of building materials including wood, concrete, and drywall and is compatible with asphalt and butyl flexible flashing. Keep Mother Nature at bay with OSI QUAD Foam.FREE SHIPPING

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