R-30 labeled performance in a 10 in. thick unfaced batt per IDI listing
Key features
24 in. module width for one-piece coverage in 24 in. o.c. bays
High listed package coverage (~80 sq ft) for large attic takeoffs
Technical specifications
| R-Value | 30.0 |
|---|---|
| Thickness | 10.0 in |
| Width | 24.0 in |
| Length | 48.0 in |
| Coverage | 80.0 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 | 24 in. width for 24 in. on-center framing modules |
| Construction type | Wood-frame and light-gauge metal-frame cavity construction |
| Application area | Attics, floors, and roof/ceilings; wood- and metal-framed cavities per code and Owens Corning literature. |
Product details
About 80 square feet per package (IDI-listed coverage). Primary use: 24 in. on-center attics, floors above unconditioned spaces, and compatible ceilings where R-30-class cavity fill is required and a 24 in. wide batt matches the framing grid.
W67 lists 10 in. labeled thickness with 24 in. width and 48 in. length on IDI Insulation, which targets full-width placement in 24 in. bays to reduce mid-cavity seams that can undermine both thermal and air-control quality when crews rush. Unfaced batts keep vapor decisions explicit—coordinate smart membranes, poly, or exterior foam with your energy rater rather than relying on insulation facing from the factory.
IDI’s product narrative highlights Next Gen handling, shed resistance, and stiff batts that recover quickly for overhead work. Those installation traits matter in vented attic floors where workers are stepping on joists and feeding long runs toward ridge hips.
Use the linked PINK Next Gen Fiberglas insulation product data sheet for tested physical properties and code language. Estimators should divide net insulated area by about 80 square feet per package for this SKU and add realistic waste for truss heels, skylights, and mechanical pads.
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
W67 versus C84 at the same R-30?
W67 versus C84 at the same R-30?
Framing module differs. W67 is distributor-listed at 24 in. wide for 24 in. o.c.; C84 is 16 in. wide for 16 in. o.c. per IDI. Coverage per bag also differs—do not swap constants between SKUs.
Does W67 include a vapor retarder?
Does W67 include a vapor retarder?
No. It is unfaced. Add an approved vapor-control layer if your assembly requires one.
How many bags for my attic?
How many bags for my attic?
Divide net insulated attic floor area by about 80 square feet per package (IDI-listed coverage) and add waste for odd geometry and mechanical islands.
Will this work in vented attics with soffit vents?
Will this work in vented attics with soffit vents?
Yes when installed with continuous vent baffles preserving the airway from soffit to ridge above the insulation. Do not stuff batts into the ventilation channel.