- Home Page /
- Industrial Supplies /
- Raw Materials /
- Laminates & Composites /
- Fiberglass /
- Knauf 678 SQFT 10 Bags of R 21 Kraft Faced 15...
0 ratings
Item #:
85785177
Knauf 678 SQFT 10 Bags of R 21 Kraft Faced 15 by 93 Fiberglass Batt Fits 2X6 Exterior Walls
86% of respondents would recommend this to a friend
Item #:
85785177
GMD 82137
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Saturday, October 17
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
EcoBatt insulation is a cost-effective thermal and acoustical barrier for energy-efficient construction.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Coverage Area
Covers 678 square feet efficiently, providing significant insulation for large spaces, reducing energy costs and enhancing thermal comfort in homes with 2x6 exterior walls.
R-21 Insulation
Offers an R-value of 21, delivering superior thermal performance and energy efficiency, ensuring optimal indoor temperatures year-round while minimizing heating and cooling expenses.
Kraft Faced
The kraft facing acts as a vapor barrier, protecting against moisture and mold, thereby prolonging the lifespan of the insulation and promoting healthier indoor air quality.
Product Details
| Brand Name | Knauf |
| Number of Packs | 10 |
| Manufacturer | Knauf |
| Number of Items | 70 |
| UPC | 725387005768 |
| Unit Count | 10 Count |
| Manufacturer Part Number | KNR21X15X93F10 |
| Item Thickness | 5.5 inches (14 cm) |
| Item Dimensions L x W | 93"L x 15"W (236.2 cm) |
| Coverage | 678.1 sq ft per 10 bags |
| Material Type | Fiberglass |
| Recommended Uses For Product | Thermal Insulation, Moisture Protection, Sound Insulation |
| Material | Fiberglass |
| Brand | Knauf |
| Product Dimensions (L x W x H) | 93"L x 15"W (236.2 cm) |
Who Should Buy?
-
Home Builders
Ideal for constructing energy-efficient homes, providing excellent insulation for 2X6 exterior wall structures.
-
Renovators
Great for homeowners upgrading insulation in older structures, improving energy efficiency and comfort.
-
DIY Enthusiasts
Perfect for DIY projects, allowing homeowners to easily install insulation in their walls.
-
Small Spaces
Not suitable for areas requiring insulation with lower depth than 2X6 framing, limiting application.
Product Description
Knauf 678 SQFT 10 Bags of R 21 Kraft Faced 15 by 93 Fiberglass Batt Fits 2X6 Exterior Walls
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the R-value of Knauf fiberglass batt insulation?
Answer: The Knauf 678 SQFT insulation has an R-value of 21. This high R-value indicates excellent thermal resistance, making it effective for energy efficiency in homes. A higher R-value means better insulation performance, which can help maintain consistent indoor temperatures, ultimately reducing energy consumption and costs in your heating and cooling systems. -
Question:
How do you install R 21 Kraft faced fiberglass batts?
Answer: Installing R 21 Kraft faced fiberglass batts involves measuring your wall cavities, cutting the batts to the required size, and ensuring they fit snugly between the studs. The Kraft facing should be installed facing the interior of the home to act as a vapor barrier. Correct installation is vital to maximize performance and achieve the desired energy efficiency in your space, particularly in exterior walls. -
Question:
Is Knauf fiberglass batt insulation fire-resistant?
Answer: Yes, Knauf fiberglass batts have fire-resistant properties due to the glass fibers used in their composition. This insulation complies with safety standards, providing an additional layer of protection in case of fire. It’s essential to consider fire safety alongside insulation when selecting materials for construction or renovation projects. -
Question:
What are the dimensions of the Knauf fiberglass batts?
Answer: The Knauf batts are designed to have dimensions of 15 inches by 93 inches, providing a substantial coverage area for insulation needs. This size makes them particularly suitable for 2X6 exterior walls, optimizing the fit and performance. Choosing the correct dimensions ensures fewer gaps, enhancing thermal performance and comfort in your living space. -
Question:
Can R 21 fiberglass batts be used in ceilings?
Answer: While R 21 fiberglass batts are primarily designed for walls, they can also be used in ceilings, depending on local building codes and insulation needs. In ceilings, a higher R-value may be preferred due to heat rise. Always consider the specific insulation requirements of your project to ensure optimal performance and energy efficiency. -
Question:
How does Kraft facematerial help in insulation?
Answer: The Kraft facing on the Knauf batts acts as a vapor barrier, protecting against moisture buildup. This feature is especially important in exterior walls, where moisture intrusion can lead to mold and decay. By preventing moisture accumulation, the Kraft facing enhances durability and longevity of both the insulation and the building structure. -
Question:
What areas of my home should I insulate with R 21 batts?
Answer: R 21 batts are ideal for insulating exterior walls in your home, particularly in regions that experience extreme temperatures. They provide necessary thermal resistance, ensuring your home remains comfortable year-round. Additionally, consider insulating basement walls or attics where maintaining temperature balance is crucial to overall energy efficiency. -
Question:
Are Knauf fiberglass batts environmentally friendly?
Answer: Knauf fiberglass batts are considered environmentally friendly, as they are made from recycled materials and are recyclable themselves. Choosing insulation like this reduces the ecological footprint of your building projects, contributing to sustainable building practices and supporting energy conservation efforts in the long run. -
Question:
How do R 21 fiberglass batts compare to other types of insulation?
Answer: R 21 fiberglass batts offer a strong balance between thermal efficiency and cost, making them a popular choice compared to foam or cellulose insulations. They provide effective resistance to heat flow while being lightweight and easy to handle. Understanding the advantages of each type can help you choose the best option for your specific insulation needs. -
Question:
Where can I buy Knauf 678 SQFT 10 Bags of R 21 Kraft Faced 15 by 93 Fiberglass Batt Fits 2X6 Exterior Walls?
Answer: You can purchase Knauf 678 SQFT 10 Bags of R 21 Kraft Faced Fiberglass Batt from Ubuy in The Gambia. Ubuy offers a user-friendly online shopping experience, ensuring you have access to this high-quality insulation product for your home improvement needs.
Knauf Fiberglass Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
GMD 82137
Order now and get it around Saturday, October 17
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Cost-effective thermal and acoustical barrier.
- Ideal for both new and retrofit wood and metal frame applications.
- High Density batts ensure optimal thermal performance in limited spaces.
- Significantly reduces sound transmission for improved acoustical performance.
- Fiber insulation does not support mold growth.
- Exclusive $20 discount when picked up at over 150 warehouses across the US.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.