Unfaced R-19 at 6.5 × 15 × 93 in. per IDI for designer-led vapor detailing
Key features
GREENGUARD Gold called out on the IDI product listing for submittals
93 in. length for commercial pre-cut stud stacks and modular wall heights
Technical specifications
| R-Value | 19.0 |
|---|---|
| Thickness | 6.5 in |
| Width | 15.0 in |
| Length | 93.0 in |
| Coverage | 77.5 sq ft/pack |
| Material | Fiberglass (PINK Next Gen), unfaced |
| Fire rating | ASTM C665; unfaced glass fibers classified noncombustible per ASTM E136 in manufacturer documentation. Unfaced PINK Next Gen acceptable ICC construction types I through V when installed per Owens Corning literature. |
| Sound rating | Cavity-fill fiberglass improves typical assembly STC versus an empty cavity; final acoustic performance is assembly-dependent. |
| Density | Light-density flexible batt per ASTM C665 manufacturer listings; see TDS for product-specific values. |
| Thermal conductivity | Nominal R-value at labeled thickness; see manufacturer TDS (ASTM C518) for tested conductivity. |
| Framing width | 15 in. width for 16 in. on-center stud spacing in nominal 2×6 walls |
| Construction type | Wood-frame and light-gauge metal-frame cavity construction |
| Application area | Wood- and metal-framed walls, floors, and roof/ceilings; interior side of basement and unvented crawlspace walls per code and Owens Corning literature. |
Product details
About 77.5 square feet per package (IDI-listed coverage). Primary use: nominal 2×6 walls, floors, and ceilings on 16 in. on-center framing where R-19 unfaced cavity fill is specified and 93 in. lengths match pre-cut stud ordering.
E55 lists 6.5 in. labeled thickness, 15 in. width, and 93 in. length on IDI Insulation—the geometry mirrors E61’s listed module but removes factory kraft so vapor control can be executed with smart membranes, poly, or exterior continuous insulation as the energy designer directs.
IDI markets GREENGUARD Gold certification and Next Gen handling benefits for this listing. Field teams should still emphasize full labeled thickness, continuous air barriers at rim and penetrations, and careful relief at outlets and pipes because compressed fiberglass under-performs in models and in reality.
Use the PINK Next Gen Fiberglas insulation product data sheet linked from IDI for authoritative tested properties. When estimators compare E55 to M47, remember M47 is 16 × 96 in. with different coverage—never swap square-foot constants between item numbers on the same takeoff sheet.
Documents & certifications
Technical data sheet
Manufacturer-tested R-value, coverage, fire notes, and handling—use for submittals, RFIs, and field QA.
Download PDF (opens in new tab)Certifications & compliance
GREENGUARD Gold certified per IDI product listing; UL Environment EPD per manufacturer family documentation; California Title 24 Article 3 insulating materials where applicable.
Frequently asked questions
E55 versus E61—same size?
E55 versus E61—same size?
Per IDI listings both show 6.5 × 15 × 93 in. with about 77.5 square feet per package; E61 adds kraft facing while E55 is unfaced. Match facing to your approved assembly.
E55 versus U89B at similar module?
E55 versus U89B at similar module?
U89B is R-21 at 5.5 in. labeled thickness per IDI; E55 is R-19 at 6.5 in. Do not interchange R-value or thickness assumptions on the same wall schedule.
How many bags should I buy?
How many bags should I buy?
Divide net insulated area by about 77.5 square feet per package and add a realistic waste factor.
Do unfaced batts need a thermal barrier?
Do unfaced batts need a thermal barrier?
Yes in occupied spaces per code. Install approved finishes even though glass fiber is noncombustible per ASTM E136 in manufacturer documentation.