R-13 Unfaced Fiberglass Batt Insulation for 2x4 Walls
JM R-13 unfaced fiberglass batt insulation is designed for 2x4 wall cavities with 16-in on-center stud spacing. The formaldehyde-free batts help improve energy efficiency and add sound control, and can be installed by pressing in place between studs.
Key Features:
- Sized for Standard 2x4 Walls: Pre-cut 16 in x 96 in batts for 16-in on-center stud bays in 8-ft wall applications
- Unfaced for Flexibility: No vapor retarderideal for adding to existing insulation or where a separate vapor barrier is used
- Thermal + Sound Performance: R-13 thermal resistance helps reduce heat transfer while also providing sound control
- Durable, Noncorrosive Fiberglass: Will not rot, mildew, or deteriorate and is noncorrosive to pipes, wiring, and metal studs
- Indoor Air Quality & Efficiency Credentials: Formaldehyde-free and ENERGY STAR / GREENGUARD Gold certified (per listed product certifications)
Specifications Table:
| Specification | Details |
| R-Value | R-13 |
| Insulation Type | Fiberglass batt |
| Faced/Unfaced | Unfaced |
| Coverage Area | 117.33 sq ft |
| Batt Width | 16 in |
| Batt Length | 96 in |
| Thickness | 3.5 in |
| Stud Spacing | 16 in on-center |
| Fits Wall Size | 2 x 4 walls |
| Framing Type | Steel studs |
| Vapor Retardant | No |
| Sound Barrier | Yes |
| Formaldehyde Free | Yes |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| SCS Recycled Content Certification | Yes |
| For Use in Walls | Yes |
| For Use in Basements | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Floors | No |
| For Use in Crawlspaces | No |
| Package Type | Multi-pack |
| Coverage Area (Sq. Feet) | 117.33 |
| Total Package Quantity | 55 |
| Package Count | 11 |
| Multi-Pack Quantity | 5 |
| Bag Dimensions (L x W x D) | 20 x 20 x 50 |
| Package Weight (lbs.) | 27 |
| R-Value per Inch | 3.7143 |
| Maximum R-Value | 13 |
| CA Residents: Prop 65 Warning(s) | No |
| UNSPSC | 11162400 |
| Flame Spread Index | <25 |
| Smoke Developed Index | <50 |
| Water Vapor Sorption | <5 % |
| Standards/Certifications | ASTM C665 Type I; ASTM E136; IBC; Energy Star Certified; Greenguard Gold Certified; Indoor Air Quality Certified; NAIMA 16 CFR Part 460; Recycled Content Certified |
Frequently Asked Questions (FAQ):
Q: What wall cavities does this batt fit?
A: Its sized for 2x4 wall cavities with 16-in on-center stud spacing (16 in W x 96 in L batts).
Q: Does it include a vapor barrier?
A: Nothis is unfaced insulation and does not include a vapor retarder.
Q: Where can it be used?
A: Listed for use in walls and basements; its intended for steel-stud framing per the provided specifications.
Q: How do I install it?
A: Batts are designed to be pressed in place between studs; cut as needed for obstructions (e.g., wiring, boxes).
Q: Is it formaldehyde-free?
A: Yeslisted as formaldehyde-free.
Quiet luxury starts behind the walls.
Theres an undeniable elegance to a home that feels calmtemperature steady, sound softened, spaces effortlessly serene. These unfaced fiberglass batts tuck cleanly into standard 2x4 cavities, delivering R-13 comfort with an added layer of acoustic ease. Pair them with a thoughtful wall finish and you create rooms that feel intentionally composed, not just built. Its the kind of invisible upgrade that makes everyday living feel decidedly more luxurious.
Upgrade your walls with JM R-13 unfaced fiberglass batts to boost comfort and quiet in the spaces you use every day.
