Our PU edge sealed rockwool sandwich panels combine Class A1 fire resistance with airtight polyurethane sealing, eliminating the air leakage and moisture issues of standard rockwool. This design cuts thermal bridges, improves energy efficiency, and extends building lifespan. As a professional manufacturer, we offer factory-direct supply, fast global shipping, and full customization for your projects.
Advantages of PU Edge Sealing Rockwool Panels
Class A1 Fire Rating: Non-combustible rockwool core provides the highest level of fire safety, compliant with international building codes
Superior Airtightness: Continuous PU foam edge sealing eliminates air leakage, improving insulation performance by 30% compared to standard rockwool panels
Enhanced Edge Strength: PU reinforcement prevents edge damage during transportation and installation, reducing material waste
Excellent Moisture Resistance: Closed-cell PU edges prevent water and moisture from penetrating the rockwool core, avoiding insulation degradation
High Thermal & Acoustic Insulation: Outstanding heat insulation and sound absorption properties for comfortable indoor environments
Fast Bolted Installation: Precisely engineered tongue-and-groove joints enable quick and easy on-site assembly
50+ Year Projected Lifespan: High-quality steel skins and anti-corrosion treatment ensure long-term reliable performance
This type of sandwich panel uses a polyurethane (PU) edge seal to protect the rockwool insulation and create a weather-tight barrier between the panel and the building structure. The two steel outer skins are coated with a colour finish; the rockwool insulator has a high density; and the four outer edges of the panel are sealed using a continuous PU foam material.
This innovative design solves the biggest drawbacks of traditional rockwool panels：
Eliminates thermal bridges at panel joints
Prevents moisture absorption and mold growth
Improves overall structural integrity
Reduces air infiltration and energy loss
The panels are manufactured using precision CNC machines, so they fit together perfectly. The tongue and groove system, when combined with PU sealant, produce a perfect continuous air-tight seal at the building envelope.
Application Scenarios
Our PU-edge-sealed rockwool panels work great for projects needing strong fire safety and top-notch thermal insulation.
This innovative design solves the biggest drawbacks of traditional rockwool panels：
Commercial and industrial warehouses
Food processing facilities and cold storage
Pharmaceutical and cleanroom buildings
Electronic manufacturing workshops
Office buildings and commercial centers
Schools, hospitals and public buildings
Equestrian facilities and agricultural buildings
Buildings in coastal or humid climates
Our Production Process
From Design to Installation
Custom Design & Global Compliance
Professional CAD/3D modeling and structural calculation, fully compliant with GOST (Russia), Canadian building codes, Eurocodes, and international standards.
Precision Steel Fabrication
CNC cutting, drilling, and bending of steel components, with strict dimensional control to meet global project requirements.
Certified Welding & Quality Control
ISO-certified welding processes and pre-assembly inspection, ensuring structural integrity for global installations.
Corrosion-Resistant Surface Treatment
Sandblasting, zinc-rich primer, and durable topcoat application, optimized for long-term performance in diverse climates (cold, humid, coastal).
Steel Component Packing & Container Loading
Bundled steel framing with steel wire/straps and protective wrapping, optimized for containerized shipping. Secure loading to prevent shifting during long-distance ocean transport.
Global On-Site Installation
Experienced installation teams and project management available worldwide, supporting fast, precise assembly in any region.
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.
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.
60,000 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.
