SKU: 83053507108

Knauf Insulation EcoBatt R-11 Kraft-Faced Fiberglass Insulation Batts, 3.5 in x 15 in x 93 in, 155 sq ft

Sale price$160.25 Regular price$178.06
Save 10%

Pay in installments of $44.52 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Knauf Insulation EcoBatt R-11 Kraft-Faced Fiberglass Insulation Batts, 3.5 in x 15 in x 93 in, 155 sq ftR 11 Kraft Faced Fiberglass Insulation Batts (3. 5 x 15 x 93) EcoBatt R 11 fiberglass batts deliver reliable thermal and acoustic performance for stud walls and ceilings. Kraft facing controls vapor while ECOSE Technology uses a sustainable, formaldehydefree binder with high recycled content. Key Features: Thermal & Acoustic Performance: R 11 batts reduce heat transfer and dampen sound between rooms and floors Kraft Vapor Retarder: Factory applied

R-11 Kraft-Faced Fiberglass Insulation Batts (3.5 x 15 x 93)

EcoBatt R-11 fiberglass batts deliver reliable thermal and acoustic performance for stud walls and ceilings. Kraft facing controls vapor while ECOSE Technology uses a sustainable, formaldehyde‑free binder with high recycled content.


Key Features:

  • Thermal & Acoustic Performance: R-11 batts reduce heat transfer and dampen sound between rooms and floors
  • Kraft Vapor Retarder: Factory-applied kraft facing helps manage moisture in conditioned assemblies
  • Eco-Friendly Binder: Made with ECOSE Technology—formaldehyde‑free and includes over 50% recycled glass
  • Easy Handling: Soft, naturally brown fibers are easier to cut and install with less itch
  • Bag Coverage: Each 3.5 in x 15 in x 93 in bag covers approximately 155 sq ft

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
R-Value R-11
Material Fiberglass
Facing Kraft
Thickness 3.5 in
Width 15 in
Length 93 in
Coverage per Bag 155 sq ft
Batts per Bag 16
Technology ECOSE Technology (formaldehyde‑free binder)

Frequently Asked Questions (FAQ):

Q: What applications are these R-11 batts suitable for?
A: Ideal for interior walls, floors between levels, and other assemblies where moderate thermal and sound control is needed.


Q: Do these batts include a vapor retarder?
A: Yes, they are kraft‑faced to function as a vapor retarder when installed with the facing toward the conditioned space.


Q: Are the materials formaldehyde-free?
A: Yes, EcoBatt uses ECOSE Technology, a formaldehyde‑free, sustainable binder.


Q: How many batts are in a bag for the 3.5 x 15 x 93 size?
A: Typically 16 batts per bag, covering about 155 sq ft.


Q: Can I cut the batts to fit around obstacles?
A: Yes, the fiberglass batts can be easily cut with a utility knife to fit snugly around framing and services.


Warmth, Quiet, and Clean Lines—Naturally

EcoBatt’s soft, earthy fibers bring a subtle calm to the build, streamlining walls with consistent insulation that supports a serene, energy‑savvy home. The kraft facing offers a tailored finish that installs neatly and disappears behind drywall. Style it with solid wood framing and disciplined spacing for crisp, efficient cavities. Consider it an essential layer for luxurious comfort and understated performance.


Upgrade your walls with EcoBatt R-11 for cleaner installs, quieter rooms, and energy savings—add to cart today.

Installation

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83053507108

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
T
Verified Purchase
Terry E.
Lake Worth, US
★★★★★ 5
GREAT!
Color: Multicolor-4pack-a1, Size: XX-Large
So comfortable and soft. I love them! No elastic. Sizes were accurate.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
I
Verified Purchase
Isabel H.
Draper, US
★★★★★ 5
10/10
Color: Multicolor-4pack-a1, Size: Small
These are some of my favorite underwear. I find myself reaching for these constantly. They're very good quality and very stretchy. I'm 140 5'3 and I got a small they fit great. Someone larger or smaller would fit in the small too. I do stress that the leg holes are a bit tight on my thighs and I don't have thick thighs at all. On someone with thicker thighs I'd say size up to a medium. You can wear these as mid/high waisted or low waisted. They're versatile! The cotton gusset is a plus too❣️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
M
Verified Purchase
Miss Stevie
Carnegie, US
★★★★★ 5
Better than Haynes at for less money
Color: Multicolor-4pack-a1, Size: XX-Large
I am surprised by the quality of these knickers. They are better than Haynes for less money and when I say they’re better, I mean far better, but I can’t believe how comfortable and STRETCHY best underwear is
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
E
Verified Purchase
Elaine phiri
Port Orchard, US
★★★★★ 5
love love love!!
Color: Multicolor-4pack-a1, Size: Medium
like my daily driver now, like i never thought underwear could be this good untill now! have bought 2 4packd and will probably get more in the future :) they are snug but not suffocating, with my darker skin i was worried of them getting darker in that area but so far(3-4 months) they’ve been holding up well and clean easily in the washing with a bit of stain remover!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
M
Verified Purchase
Mark & Ashley
Los Angeles, US
★★★★★ 3
Satisfactory
Color: Multicolor-4pack-a1, Size: X-Large
If your wanting an easy on high waisted underwear these work. They are honestly strange material, a mix of three different things- not bad but different. Not seamless, might ride up, slightly on the thicker side. Will last a while. Comfortable enough but not amazing. Got for after a surgery and needed something different- these worked but would I get on a normal day probably not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026

recommand products