Insulation Overstock
Wholesale Fiberglass Insulation · insulationoverstock.com
Doc: IO-SPEC-WMP50-BLK-01
Rev: 2026-07
WMP-50 Black — Dark Warehouse-Grade Fiberglass Facing
PSKP Black classification. Highest-tensile facing available in the black variant with metalized polyester layer. Warehouse-grade performance with dark interior aesthetic.
Physical Specifications
| Facing Classification | PSKP Black (metalized polyester / scrim / kraft / polypropylene, dark) |
| Facing Color | Black interior with metalized backing |
| Substrate | NAIMA-certified fiberglass batt |
| Available Widths | 4 ft, 5 ft, 6 ft |
| Available Lengths | 16 ft to 100 ft rolls |
| Radiant Reflection | Metalized backing: ~85% radiant reflectivity |
Performance Data
| R-Value Range | R-8 through R-25 |
| Vapor Permeability | 50 perms (ASTM E96) |
| Fire Rating | Class A / Class 1 (ASTM E84) |
| Tensile Strength | 65 lbs/in (highest of the black variants) |
| Mullen Burst Strength | ≥80 psi |
| VOC Emissions | Compliant with CDPH 01350 |
R-Value / Thickness / Wholesale Rate
| R-Value | Nominal Thickness | Wholesale Rate ($/sq ft) | Recommended Use |
|---|---|---|---|
| R-8 | 2.5″ | $0.60 | Dark warehouse condensation control |
| R-10 | 3.0″ | $0.64 | Dark industrial storage |
| R-11 | 3.5″ | $0.67 | Dark-interior commercial walls |
| R-13 | 3.625″ | $0.77 | Home theater 2x4 walls, dark commercial |
| R-19 | 6.0″ | $1.02 | Home theater 2x6, dark warehouse walls |
| R-25 | 8.0″ | $1.25 | High-perm cold-climate dark ceilings |
Standards Compliance
| Material Standard | ASTM C665 Type II Class C |
| Fire Testing | ASTM E84 (Class A) |
| Vapor Testing | ASTM E96 |
| Certification | NAIMA-certified U.S. mill |
| Return Policy | 30-day inspection window |
Recommended Applications
| Home Theater | Highest tensile + dark aesthetic |
| Dark Warehouses | Best-in-class dark commercial |
| Studios / Broadcast | Dark aesthetic + acoustic absorption |
| High-Humidity Dark Interiors | 50-perm rating handles moisture |
| Best For | Any humid or heavy-use dark-interior build |
Ordering
Live wholesale pricing calculator at insulationoverstock.com/products/black-faced/. Freight to your state and buyer-offered service fee range are shown at checkout. Fair offers within the acceptable range are accepted same-business-day.