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Kingspan · K-Roc mineral fiber panels

K-Roc HF

A mineral fiber core panel for walls that need an hourly fire rating, in 4, 6 and 8 in. thicknesses, with embossed or smooth skins that stand up to heavy wash-down.

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-3.8 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.

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K-Roc HF mineral fiber panel with an embossed teal Azteco face at an intermediate support, the mineral fiber core visible at the edge
Azteco profile, intermediate support. Image: Kingspan.
K-Roc HF mineral fiber panel with a flat light-colored face at an intermediate support
Flat profile, intermediate support. Image: Kingspan.
K-Roc HF mineral fiber panel with a ribbed Shadowline face at an intermediate support
Shadowline profile, intermediate support. Image: Kingspan.

R-value by thickness

Thermal resistance per ASTM C518, as published by Kingspan.
ThicknessAt 75°F mean temperature
4 in.R-15.2
6 in.R-22.8
8 in.R-30.4

Fire-rated assemblies

ASTM E119 / ULC-S101. Panel thickness for each rating, as published. Consult Kingspan Technical Services for the specific installation requirements behind each rating.
RatingWall panel thicknessCeiling panel thickness
1 hour4 in.6 in.
1.5 hour6 in.6 in.
2 hour6 in.8 in.
3 hour8 in.—

Published test results

Test procedures and results as listed by Kingspan. The listing, not this page, is the reference for a code review.
TestProcedureResult
FireFM 4880Passed: Class 1 Fire Rating of Building Panels or Interior Finish Materials*
FireASTM E814Listed up to 6 in. diameter steel pipe through-penetration
FireASTM E84 (mineral fiber core)Flame spread 0, smoke developed 5
FireULC-S114Non-combustible
FireULC-S115Passed: fire tests of firestop systems
StructuralASTM E72Vacuum chamber tested. Panel load/span and deflection tables are available
AirASTM E2830.03 CFM/ft² of panel area at 6.24 psf
WaterASTM E331No uncontrolled water penetration at 20 psf differential pressure
Regional approvalsCity of Los AngelesLCR-85599
Regional approvalsFlorida (FPA)FL25618.1

*FM scope: thickness 4 to 8 in., width 42 in., minimum panel length 8 ft, minimum gauge 26 ga exterior and interior.

For FM compliance, systems must be installed in accordance with FM installation specifications as detailed on ApprovalGuide.com.

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.

K-Roc FXQuadCore KS Shadowline InteriorQuadCore KS Flat InteriorThe whole Kingspan catalog

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 HF and K-Roc HF Data Sheet.

Tell us about the room.

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Design temperature, size, wash-down and fire requirements, or the drawings. We confirm the panel, thickness, gauge and finish, and quote it.