Rockwool Sandwich Panel (PU Edge Sealing)
PU Edge Sealed Rock Wool Sandwich Wall Panels
1.Bingfa Steel Structure provides top quality PU edge-sealed rockwool sandwich wall panel for steel buildings, warehouses, workshops, factories, commercial buildings, prefab structures, and industrial wall cladding applications. The panel consists of color-coated steel sheets and rock wool insulation core and has PU sealing edges, which provides fire resistance, thermal insulation, sound absorption, improved edge sealing, and durable wall enclosure performance.
2.Our rockwool sandwich panels, which have edges that are sealed with PU, may be utilized for walls on the inside and outside of steel structure buildings for those owners who require cladding that is safer, cleaner and will last longer, than other types of cladding solutions. The thickness, length and thickness of the steel sheet, color of the surface and joint design can all be adjusted according to your requirements.









| Parameter | Standard Value |
|---|---|
| Panel Type | Rockwool Sandwich Panel with PU Edge Sealing |
| Density | 80/100/120 kg/m³ |
| Core Thickness | 50/75/100/125/150mm |
| Effective Width | 950/1150mm |
| Color Steel Plate Thickness | 0.4/0.45/0.5mm |
| Color-Coated Steel Coils | Gray, White, Sky Blue, Green, Bright Red, Silver-Gray, etc. (Custom colors available) |
| Fire Rating | Class A1 (Non-combustible) |
| Thermal Conductivity | ≤0.040 W/m·K |
| Sound Insulation | 35-50dB |
| Design Standard | ISO, CE |

| Parameter | Standard Value |
|---|---|
| Panel Type | Rockwool Sandwich Panel with PU Edge Sealing |
| Density | 80/100/120 kg/m³ |
| Core Thickness | 50/75/100/125/150mm |
| Effective Width | 950/1150mm |
| Color Steel Plate Thickness | 0.4/0.45/0.5mm |
| Color-Coated Steel Coils | Gray, White, Sky Blue, Green, Bright Red, Silver-Gray, etc. (Custom colors available) |
| Fire Rating | Class A1 (Non-combustible) |
| Thermal Conductivity | ≤0.040 W/m·K |
| Sound Insulation | 35-50dB |
| Design Standard | ISO, CE |
Key Advantages of PU Edge Sealed Rock Wool Sandwich Wall Panels
1.Fire-Resistant Wall Panel Solution
The rock wool core provides good fire resistance, making the panel suitable for warehouses, workshops, factories, industrial buildings, and commercial projects with higher wall safety requirements.
2.PU Edge Sealing for Better Panel Performance
The PU sealing edge helps improve edge strength, sealing performance, and moisture resistance, making the wall panel more stable and suitable for long-term steel building applications.
3.Thermal and Sound Insulation
Rock wool insulation helps reduce heat transfer through the wall system and improves sound absorption for steel buildings, workshops, and industrial spaces.
4.Durable Steel Building Wall Cladding
Color-coated steel sheets provide a clean surface, strong enclosure performance, and long-term protection for steel structure buildings.
5.Fast Installation and Custom Design
Prefabricated sandwich wall panels are easy to install on steel frames. Panel thickness, length, color, steel sheet thickness, surface profile, and joint type can be customized.
Applications
Our PU edge sealed rock wool sandwich wall panels are widely used for:
- Steel warehouse wall cladding
- Steel workshop wall panels
- Factory wall enclosure
- Industrial building walls
- Commercial building wall systems
- Prefab building wall panels
- Interior partition walls
- Fire-resistant wall systems
- Logistics warehouse walls
- Production facility wall panels
- Agricultural steel building walls
PU edge-sealed rock wool sandwich wall panels provide an effective solution where fire resistance, insulation, sound control, and improved edge sealing are important.
Product Structure
A PU edge sealed rock wool sandwich wall panel usually consists of:
- Outer color-coated steel sheet
- Rock wool insulation core
- PU sealing edge
- Inner color-coated steel sheet
- Tongue-and-groove joint or customized joint system
- Matching accessories for wall installation
This structure joins the fire resistant performance of rock wool with improved polyurethane edge sealing. It is suitable for steel building wall cladding, and industrial enclosure systems.
Why Choose PU Edge Sealed Rock Wool Wall Panels?
The combination of the PU edge seal with the rock wool sandwich wall panel provides a wall panel that will meet all of your project requirements for fire protection, insulation, sound control, as well as improved wall panel sealing capabilities. The rock wool core provides the fire protection properties of the wall enclosure, while the PU edge sealing design provides the best quality panel edge and provides the best installation capabilities for the wall panels.
This panel is an excellent choice for steel warehouses, workshops, factories, production facilities, and industrial projects and prefab buildings, that have a strong need for a safe, durable, and clean looking wall.
What Information Do We Need for a Quote?
To provide an accurate quotation, please send us:
- Required panel thickness
- Panel length or wall drawing
- Total wall area or quantity
- Steel sheet thickness
- Surface color
- Surface profile requirement
- Joint type requirement
- Project location
- Building type and application
- Whether installation accessories are needed
Some usual wall accessories are self-drilling screws, U channels, corner trims, flashing, sealant, along with various materials
Sandwich Panel Production Process
Our sandwich panel production process is carefully controlled to ensure accurate dimensions, strong bonding, and consistent panel quality.

Steel Coil Uncoiling
Color-coated steel coils are loaded onto the uncoiling machine, leveled, and continuously fed into the production line. Protective film may also be applied to reduce scratches and surface damage.

Steel Sheet Roll Forming
The upper and lower steel sheets pass through roll-forming equipment to create the required panel profile, surface pattern, and edge shape.

Core Material Feeding
Rock wool or other insulation core materials are transported into the production line according to the required panel thickness and specification. The core is positioned carefully to maintain consistent panel structure.

Adhesive Application & Edge Sealing
Adhesive is applied evenly between the metal sheets and insulation core to create a stable bond. Panel edges may also be formed or sealed according to the selected joint design.

Double-Belt Pressing & Automatic Cutting
The metal sheets and core material pass through the double-belt pressing system, where they are continuously bonded and formed. The finished panels are then automatically cut to the required project length.

Finished Panel Stacking & Packaging
The completed panels are inspected, stacked, labeled, and packed with protective materials. Proper packaging helps protect panel surfaces and edges during storage, container loading, and delivery.
Why Choose Us?
Custom Steel Structure Buildings — Offering Rapid Delivery, Direct-from-Manufacturer Sales, and Installation Technical Support.
With over 15 years of experience in steel structure export, we specialize in delivering high-quality prefab warehouses, riding arenas, and residential buildings to clients worldwide.
We offer integrated design, fabrication, and installation services. With 15 years of experience specializing in steel structure factory construction, we have an independent construction team and provide one-on-one service. We customize solutions for your projects, saving you time and reducing hassle.
Our Expert Team
Dedicated sales, engineering, and production teams with deep expertise in global steel building projects.
15+ Years Export Experience
Serving clients in Russia, Canada, Europe, and the Caribbean with tailored steel structure solutions.
100,000 m² Production Base
Precision CNC fabrication and strict quality control to meet international project requirements.
FAQ About Rockwool Sandwich Panels (PU Edge Sealing)
Q: Are rockwool sandwich panels with PU edge sealing energy efficient?
A: Yes! The Polyurethane (PU) Edge Sealed Rockwool Panels we manufacture will eliminate the air leakage problem standard Rockwool Panels face, providing a 30% higher Thermal Insulation Value than regular Rockwool, which will reduce the cost to heat/cool your building.
Q: How long do rockwool sandwich panels with PU edge sealing last?
A. The anti-corrosion steel skins and the PU edge sealing of our rock wool sandwich qualifies it for a service life of over fifty (50) years, which can equal the life of the steel structure to which it is attached.
Q: What is the difference between PU edge sealed and standard rockwool panels?
The majority of rockwool panels feature open edges, which leads to air leaks and absorbs water. By using a polyurethane edge seal, we create a panel that is completely sealed and as such will not be subjected to thermal bridging, will be free from mould and will result in an increased life of the panel.
Q: What is the fire rating of your rockwool sandwich panels?
A: Our rockwool sandwich panels feature a Non-combustible (Class A1) fire rating; the high level of fire safety is in full compliance with international building codes. The thin layer of PU used for edge sealing does not influence the total fire resistance of the panels.
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Our team will be happy to respond to you in less than 24 hours.

