K-Roc FX
The second mineral fiber line: the same 42 in. module, 4, 6 and 8 in. thicknesses and hourly wall ratings, with its own published R-values and air and water results.
D.W. Ross supplies Kingspan panels for cold storage, clean room and fire-rated work, and can install the panel system it supplies or deliver it material-only for your contractor.
← Fire-rated mineral fiber panels
Specifications
As published by Kingspan. Used for: Fire-rated walls and ceilings, Food processing, Data centers.
- Insulation core
- Mineral fiber. R-3.7 per inch at 75°F mean temperature, ASTM C518.
- Profile
- Exterior: Azteco, Flat, Micro-Rib, Mini Micro-Rib or Shadowline. Interior: Shadowline.
- Embossing
- Exterior: stucco or non-embossed (Azteco profile only with Azteco embossing). Interior: stucco or non-embossed.
- Gauge
- Exterior: Shadowline 26, 24 or 22 ga; Azteco, Flat and Micro-Rib 24 or 22 ga; Mini Micro-Rib 24 ga. Interior: 26, 24 or 22 ga.
- Width
- 42 in.
- Thickness
- 4, 6 or 8 in.
- Length
- 8 to 48 ft.
- Reveal
- 1/8 in.
- Orientation
- Vertical or horizontal.
- Availability
- Confirmed by D.W. Ross in the quote for your project.
R-value by thickness
| Thickness | At 75°F mean temperature |
|---|---|
| 4 in. | R-14.8 |
| 6 in. | R-22.2 |
| 8 in. | R-29.6 |
Fire-rated assemblies
| Rating | Wall panel thickness | Ceiling panel thickness |
|---|---|---|
| 1 hour | 4 in. | 6 in. |
| 1.5 hour | 6 in. | 6 in. |
| 2 hour | 6 in. | 8 in. |
| 3 hour | 8 in. | — |
Published test results
| Test | Procedure | Result |
|---|---|---|
| Fire | ASTM E814 | Listed up to 6 in. diameter steel pipe through-penetration |
| Fire | ASTM E84 (mineral fiber core) | Flame spread 0, smoke developed 10 |
| Fire | ULC-S114 | Non-combustible |
| Fire | ULC-S115 | Passed: fire tests of firestop systems |
| Structural | ASTM E72 | Vacuum chamber tested. Panel load/span and deflection tables are available |
| Air | ASTM E283 | 0.01 CFM/ft² of panel area at 6.24 psf |
| Water | ASTM E331 | No uncontrolled water penetration at 10 psf differential pressure |
Kingspan documents
These open on Kingspan’s site, so you always get the current revision. Send the data sheet and span table with your drawings and we will check the panel against the room.
- Data sheetK-Roc FX Data Sheet (PDF) ↗
- Span tableK-Roc FX Span Table (PDF) ↗
- Span tableK-Roc FX Interior Span Table (PDF) ↗
- Span tableK-Roc FX Midspan Span Table (PDF) ↗
- Weight tableK-Roc FX Weight Table (PDF) ↗
- CSI specificationK-Roc FX MasterFormat CSI Specifications (DOCX) ↗
- CAD detailsK-Roc FX Vertical CAD Details (PDF) ↗
- CAD detailsK-Roc FX Horizontal CAD Details (PDF) ↗
- CAD detailsK-Roc FX Ceiling CAD Details (PDF) ↗
- BrochureControlled Environments Product Portfolio (PDF) ↗
- Color chartKingspan Color Chart (PDF) ↗
- MaintenanceKingspan Panels Maintenance Manual (PDF) ↗
Product data and images: Kingspan Insulated Panels and Kingspan Insulation. Values as published by Kingspan; the data sheet linked on each page is the current reference. Read on 2026-10-12 from Kingspan product page: K-Roc FX and K-Roc FX Data Sheet.
Tell us about the room.
Design temperature, size, wash-down and fire requirements, or the drawings. We confirm the panel, thickness, gauge and finish, and quote it.