Rockwool Sandwich Panel

Class A non-combustible mineral wool core sandwiched between Galvalume steel sheets. The fire-safe choice for industrial, logistics and high-occupancy commercial roofs — with strong sound absorption and proven thermal stability.

Model No.

VK-RWR1

Core Material

Basalt Mineral Wool

Total Thickness

50 / 75 / 100 / 120 / 150 / 200 mm

Effective Width

960 / 1000 mm

Fire Rating

Class A · Non-combustible · up to 1000 °C

Sound Absorption

Rw up to 35 dB

When fire safety cannot be compromised

A

Non-combustible Class A core

Spun from molten basalt rock at 1500 °C, the mineral wool core is fundamentally inorganic and will not burn, melt or release toxic smoke at temperatures up to 1000 °C. Tested to GB 8624 Class A1 / EN 13501 A2-s1,d0.

Mandatory for buildings over 24 m, public-occupancy structures, oil & gas facilities, lithium battery factories and data centres in most jurisdictions.

dB

Acoustic & thermal stability

Unlike foam cores, mineral wool retains its insulation value through repeated thermal cycles and decades of service — no shrinkage, no off-gassing, no R-value decay.

Fibrous structure absorbs airborne sound, delivering Rw values up to 35 dB — ideal for noisy production halls, music venues and any roof exposed to rain impact.

VKRR/1000-50 Rockwool Roof Panel parameters

Parameters
Surface Appearance	Ribbon Pressing · Pure Flat
Steel Thickness	0.4 mm – 0.8 mm
Core Density	100 / 120 / 140 kg/m³
Crest Height	40 mm
Total Thickness	50, 75, 100, 120, 150, 200 mm
Effective Width	960 / 1000 mm
Regular Colors	Off-white · Silver Gray · Sea Blue · Bright Red
Fibre Orientation	Lamella (vertical) · for high shear strength
Recommended Coating	PE, HDP, PVDF, SMP
Recommended Plate	Galvanized or Galvalume Plate
Recommended Manufacturer	Baosteel Group, Union Group, etc.

Thickness	Heat Insulation Coefficient (K/m²·h·°C)
50 mm	0.75
75 mm	0.49
100 mm	0.49
Note: K-value measured at standard mineral wool core density. Other thicknesses (75, 120, 150, 200 mm) available on request.

Maximum allowable deflection · surface load capacity

Thickness (mm)	Heat Insulation Coefficient (K/m²·h·°C)	Surface Load Capacity P=Kg/m² · 3-span continuous (L)								Surface Load Capacity P=Kg/m² · Single span (L)
Thickness (mm)	Heat Insulation Coefficient (K/m²·h·°C)	L=	80	100	120	150	200	250	300	80	100	120	150	200	250	300
50	0.75	L=	3950	3530	3220	2880	2500	2230	2040	3530	3160	2840	2580	2230	2000	1820
75	0.49	L=	4600	4110	3720	3360	2910	2600	2370	4110	3680	3330	3000	2600	2330	2120
100	0.49	L=	4980	4450	4080	3630	3150	2820	2570	4450	3980	3610	3250	3820	2520	2300

Note: Calculations based on rockwool core density 100–140 kg/m³. L = Span (Unit: cm). Maximum allowable deflection per GB 50018 design code.

Buildings where Class A fire performance is mandated

01 Lithium Battery & EV Factories

Mandatory non-combustible envelope to contain thermal runaway events. Compliant with GB 51377 fire codes.

02 Data Centres & Telecom

Zero combustible material above critical IT infrastructure. Absorbs HVAC and equipment noise.

03 Petrochemical Facilities

Refineries, LNG depots and chemical plants where any organic material in the envelope is prohibited.

04 High-occupancy Public Buildings

Stadiums, exhibition halls, hospitals, schools — any building over 24 m or with high public occupancy.

Model No.

VK-GWR1 / VK-GWR2

Core Material

Glass Wool Fibre

Total Thickness

50 / 75 / 100 / 120 / 150 mm

Effective Width

960 / 1000 mm

Fire Rating

Class A2 · up to 700 °C

Edge Treatment

PU Side Seal

Light-weight glass wool with PU side seal

PUR

Glass Wool Core · Light & Insulating

Spun from molten glass at > 1300 °C, glass wool fibre offers excellent thermal insulation at lower density than rockwool. Class A2 fire rating with low thermal conductivity ~0.035 W/m·K.

Particularly suited to office buildings, conference halls, exhibition centres and other roofs where panel weight reduction is desirable while keeping fire safety strong.

VIKKINS’ PUR production line is equipped with an advanced six-component multi-injection foaming system and automated controls from Siemens. The system adjusts in real time based on ambient temperature to ensure consistent panel quality.

Our PUR panels feature high strength, energy efficiency and environmental friendliness — ideal for modern insulated building applications.

dB

PU Side Seal & Edge Protection

GWR panels feature an integrated polyurethane side seal that closes the cut-edge of the glass wool core, preventing fibre release, water ingress and edge crushing during install — a key advantage over plain mineral wool panels.

Two stock profiles available — VK-GWR1 (single-step trapezoid) and VK-GWR2 (double-step low profile) — selected by aesthetics or required deflection.

VK-GWR1 / VK-GWR2 · Glass Wool Roof Sandwich Panel

Parameters
Surface Appearance	Ribbon Pressing · Pure Flat
Steel Thickness	0.4 mm – 0.8 mm
Core Density	48 / 64 / 80 kg/m³
Crest Height	40 mm
Total Thickness	50, 75, 100, 120, 150, 200 mm
Effective Width	960 / 1000 mm
Regular Colors	Off-white · Silver Gray · Sea Blue · Bright Red
Edge Treatment	PU side seal (foam-injected)
Recommended Coating	PE, HDP, PVDF, SMP
Recommended Plate	Galvanized or Galvalume Plate
Recommended Manufacturer	Baosteel Group, Union Group, etc.

Thickness	Heat Insulation Coefficient (K/m²·h·°C)
50 mm	0.68
75 mm	0.54
100 mm	0.43
Note: K-value measured at standard mineral wool core density. Other thicknesses (75, 120, 150, 200 mm) available on request.

Maximum allowable deflection · surface load capacity

Thickness (mm)	Heat Insulation Coefficient (K/m²·h·°C)	Surface Load Capacity P=Kg/m² · 3-span continuous (L)								Surface Load Capacity P=Kg/m² · Single span (L)
Thickness (mm)	Heat Insulation Coefficient (K/m²·h·°C)	L=	80	100	120	150	200	250	300	80	100	120	150	200	250	300
50	0.68	L=	2950	3530	3220	2880	2500	2230	2040	3530	3160	2840	2580	2230	2000	1820
75	0.54	L=	4600	4110	3720	3360	2910	2600	2370	4110	3680	3330	3000	2600	2330	2120
100	0.43	L=	4980	4450	4080	3630	3150	2820	2570	4450	3980	3610	3250	3820	2520	2300

Note: Calculations based on glass wool core density 48–80 kg/m³. L = Span (Unit: cm). Maximum allowable deflection per GB 50018 design code.

Roofs where weight savings matter as much as thermal performance

01 Office & Commercial Buildings

Common choice for office complexes, exhibition halls and conference centres where light weight + good acoustic dampening matter.

02 Sports & Cultural Venues

Stadiums, gymnasiums, theatre and concert venues benefit from glass wool's superior sound absorption.

03 Cold-storage & Logistics Hubs

PU side-seal closes thermal bridges at panel joints — ideal where vapour control and energy efficiency matter.

04 Educational & Public Institutions

Schools, hospitals and government buildings where moderate fire-rating + lightweight roofs simplify retrofits.

Specify a Rockwool Sandwich Panel for Your Project

Send us your span, fire-rating target and acoustic requirements — our engineering desk will return a fully detailed panel package, typically within two working days.