Fire-resistant rock wool panel
High fire resistance – good sound insulation – for heavy industry.
Fire-resistant rock wool panel
The rock wool panel uses a stone mineral wool core — all but non-combustible and a good sound absorber. The choice for fire compartmentation, fire-rated walls and heavy industrial buildings.
Near non-combustible (A2)
Thermal & sound insulation
Withstands high temperatures without deforming
Modular installation
Key advantages
Fire class A2
Stone rock wool melts above 1000°C and contributes almost nothing to a fire.
Effective sound insulation
The open-fibre structure absorbs sound well, which suits noisy machine areas and plant rooms.
Durable & corrosion-resistant
Holds its shape at high temperatures and does not shrink over time.
Modular installation
A tongue-and-groove joint, cut and fitted to the ordered dimensions.
High aesthetic quality
A flat surface in a wide range of colors, easy to clean and maintain.
Technical specifications
| Core material | Rock wool — Stone mineral fibre, non-combustible |
|---|---|
| Exterior finish | Steel / stainless steel / aluminium — 0.40 – 0.80 mm thick, plain or ribbed |
| Core density – interior wall & U-groove | ≥ 40 kg/m³ — Per the 2026 catalogue |
| Core density – exterior wall | ≥ 90 kg/m³ — Per the 2026 catalogue |
| Core thickness | 50, 75, 100, 125, 150, 200 mm — Applies to all 3 variants |
| Effective width / product width – interior wall | 1,000 / 1,025 mm — Tolerance ±2 mm |
| Effective width / product width – U-groove | 1,150 / 1,170 mm — Steel U-groove |
| Effective width / product width – exterior wall | 1,000 / 1,045 mm — Tolerance ±2 mm |
| Maximum length | 18,000 mm |
| Standard steel colors | Red, blue, moss green, jade green, milky white, cream yellow, wood grain — 7 colors from the catalogue color chart |
Outer steel facingGalvanized steel / PPGL / stainless steel, 0.3–0.8 mm thick, flat surface, color-fast and corrosion-resistant.
Rock wool coreLayered stone mineral fibre: non-combustible, insulating and sound-absorbing at once.
Inner steel facingGalvanized steel / PPGL, 0.3–0.8 mm thick, flat surface, easy to clean.
Standard steel color chart
- Red Red
- Blue Blue
- Moss green Moss green
- Jade green Turquoise
- Milky white White
- Cream yellow Ivory
- Wood grain Wood grain
Beyond the standard chart, Phu Son will produce to a project's own color code on large orders.
In use on site
Production facility
Factory walls, ceilings and roofs
Cleanroom
For clean, sterile environments
Offices – Operations buildings
Partitions, ceilings and effective sound insulation
Specifications & options
- Interior wall: effective width 1,000 mm (product width 1,025 mm), core density ≥ 40 kg/m³
- U-groove interior wall: effective width 1,150 mm (product width 1,170 mm)
- Exterior wall: effective width 1,000 mm (product width 1,045 mm), core density ≥ 90 kg/m³
- Core thickness: 50/75/100/125/150/200 mm - maximum length 18,000 mm
- Standard colors: red, blue, moss green, jade green, milky white, cream yellow, wood grain
- Source: Phu Son Group 2026 Catalogue
Related accessories
- U-shaped aluminium profile
- External corner aluminium profile
- Panel joint trim
- Joint sealant silicone
- Self-drilling screws
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Quick consultation – get the right solution
Phu Son Group's engineering team is ready to advise you and turn around a quote quickly.