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Our Glass Wool Roll is a flexible thermal and acoustic insulation material. It is produced from recycled glass and natural mineral raw materials. After high-temperature melting and high-speed centrifugal blowing to form ultra-fine glass fibers, eco-friendly thermosetting resin binder is added and hot-pressed for integrated curing.
The internal fibers are randomly and uniformly interlaced in three dimensions, forming numerous sealed tiny static air cavities. As air features an extremely low thermal conductivity, the product can greatly block heat conduction and restrain internal air convection, effectively cutting building heat and cold loss to achieve long-term energy conservation.
We offer customized versions with aluminum foil facing. Such products can simultaneously block radiant heat while providing moisture-proof, water-vapor-resistant and reflective heat insulation performance. They are widely applied in thermal insulation and noise reduction projects for steel structure workshops, roof & wall panels, ventilation ducts and other scenarios.
Six Core Advantages – More Than Specifications, Delivering Real Value
① Euroclass A1 Non-Combustible Fire Performance – Uncompromised Safety
Glass wool is a purely inorganic material with Euroclass A1 fire rating (the highest standard). It will not burn, release toxic fumes or produce molten droplets during a fire. Its fiber melting point exceeds 700°C, buying precious time for personnel evacuation and fire rescue operations. It is especially suitable for industrial workshops, logistics warehouses and public buildings with stringent fire safety requirements.
The ultra-fine fibers are only 4–6 μm in diameter, evenly arranged to form dense air barriers that effectively suppress heat convection. Take the 75 mm-thick roll with a density of 24 kg/m³ as an example: its thermal conductivity reaches merely 0.036 W/mK, delivering superior thermal insulation compared with most conventional insulation materials of the same thickness and drastically cutting heating & cooling loads of buildings.
The porous fibrous structure of glass wool boasts outstanding sound absorption performance, with a sound absorption coefficient of 0.8–1.0 at medium and high frequencies ranging from 1000 Hz to 4000 Hz. In noise-intensive areas such as industrial workshops, equipment rooms and air conditioning ducts, it effectively shortens reverberation time and lowers ambient noise, improving communication clarity and working comfort for staff.
Water repellency rate exceeds 98%, and water absorption capacity is ≤ 0.5 kg/m² (24 hours). Its thermal insulation performance remains intact even in high-humidity environments. Chemically neutral, it causes no corrosion to steel structures and matches the service life of buildings.
The roll mat features excellent flexibility, allowing free laying along roof purlins and wall keels as well as quick on-site cutting. Available in lengths of 10 m / 20 m and a standard width of 1200 mm, it greatly minimizes seams, speeds up construction and cuts labor costs.
Raw materials incorporate recycled glass, and no ozone-depleting blowing agents are used during production. The product complies with LEED green building certification standards, helping projects earn green building credits.
Detailed Technical Parameters
| Item | Index | Test Standard |
|---|---|---|
| Thermal Conductivity λ | @25℃: ≈0.036–0.038 W/(m·K)@70℃: ≈0.042–0.044 W/(m·K) | EN 12667 / GB/T 17795 |
| Fire Classification | Euroclass A1/A2 (Permanent Non-combustible) | EN 13501-1 / GB 8624 |
| Fiber Melting Point | ＞700℃ | — |
| Average Fiber Diameter | 4–6μm (Max ≤8.0μm) | GB/T 17795 |
| Shot Content (≥0.25mm) | ≤0.3% (Superfine Grade) | GB/T 17795 |
| Density Range | Roll: 12–48 kg/m³ (Regular grades: 16/24/32/48 kg/m³), tolerance ±10%Board: 24–96 kg/m³ | — |
| Thickness Range | 25–180 mm (Common roll thickness: 25–150 mm) | — |
| Width | 1000 mm / 1200 mm | — |
| Length | 3–30 m (Standard roll length: 10 m / 20 m) | — |
| Water Repellency | ＞98% (Water-repellent type optional) | — |
| Water Absorption | ≤0.5 kg/m² (24 h) | — |
| Compressive Strength | ≥20 kPa (for density ≥24 kg/m³) | — |
| Tensile Strength (Foil-faced) | ≥50 kPa | — |
| Weighted Sound Absorption Coefficient αw | 0.8–1.0 (1000–4000 Hz, thickness ≥50 mm) | — |
| Max Operating Temperature | Recommended continuous service ≤250℃Short-term peak tolerance: 300–400℃ | — |
| General Compliance Standards | EN 13162, EN 13501-1, ASTM C612/C167, GB/T 13350 | — |
| Certifications | CE Mark, ISO 9001, Compliant with LEED green building credit requirements | — |
Product Specifications & Selection Guide
Specification Table
| Product Form | Density (kg/m³) | Thickness (mm) | Width (mm) | Length (m) | Application Scenarios |
|---|---|---|---|---|---|
| Unfaced Glass Wool Roll | 16/24/32/48 | 25–150 | 1200 | 10/20 | Roof insulation, wall cavity filling |
| Aluminum Foil Faced Glass Wool Roll | 16/24/32 | 25–100 | 1200 | 10/20 | Projects requiring moisture resistance & radiant heat reflection |
| Glass Wool Board | 24–96 | 25–180 | 1000/1200 | Customized | Sandwich panel core, equipment thermal insulation |
Selection Recommendations (For reference only, consult our technical team for customized solutions)
| Climate Zone / Application | Recommended Density | Recommended Thickness | Facing Suggestion |
|---|---|---|---|
| Mild southern regions (factory insulation) | 16–24 kg/m³ | 50–75 mm | Unfaced or single aluminum foil facing |
| Cold northern regions (factory insulation) | 24–32 kg/m³ | 75–100 mm | Single aluminum foil facing |
| Cold storage & cold chain facilities | 32–48 kg/m³ | 100–150 mm | Double-sided aluminum foil facing |
| Noise absorption & sound reduction projects | 24–32 kg/m³ | 50–100 mm | Unfaced or fiberglass cloth facing |
Density: 12–48 kg/m³ for rolls; 24–96 kg/m³ for boards
Thickness: 25–180 mm
Width: Customizable from 600 mm to 1200 mm
Facing Options: Unfaced / Single-sided aluminum foil / Double-sided aluminum foil / Fiberglass cloth / Kraft paper
OEM & ODM available: Custom packaging and dimensional specifications with your brand logo supported
We have supplied glass wool insulation materials for over 120 steel structure projects worldwide, with a total supply volume exceeding 500,000 cubic meters. Our clients span manufacturing, logistics, cold chain, public facilities and many other industries.
Certified ISO 9001 Quality Management System
CE-marked products fully compliant with European standards
All test data verified by a CNAS-accredited laboratory
Test reports available for every production batch
We provide end-to-end technical services including preliminary material selection, thermal performance calculation, joint detail design and on-site installation guidance, to guarantee optimal performance of your insulation system.
“We partnered with your company for the insulation work of our 80,000 m² warehouse. Your technical team optimized our material selection, cutting material costs by 12%, while the actual thermal insulation performance exceeded our design expectations.”— Mr. Chen, Project Manager of a major logistics group in Southeast Asia
FAQ
A: At an average temperature of 25℃, its thermal conductivity is approximately 0.036–0.038 W/(m·K); at 70℃, it is around 0.042–0.044 W/(m·K). The exact value varies with density and thickness.
A: It meets Euroclass A1/A2 non-combustible standard (EN 13501-1), the highest fire safety grade. Its fiber melting point exceeds 700℃. It will not burn or release toxic smoke in case of fire.
A: Glass wool roll is flexible, suitable for large-area continuous laying on roofs and walls, with density ranging from 12–48 kg/m³.Glass wool board is rigid, with density 24–96 kg/m³. It is ideal for sandwich panel cores, equipment insulation, air duct wrapping and other applications requiring compressive strength.
A: Thickness is determined by local climate, building function and energy code requirements. Density depends on installation method and performance demands: 16–24 kg/m³ is commonly used for roofs, while 32–48 kg/m³ is recommended for cold storage and premium projects.Feel free to contact our technical team for a free customized selection calculation report.
A: Yes. Customizable thickness: 25–180 mm, width: 600–1200 mm, density: 12–96 kg/m³. Multiple facing options are available, including aluminum foil, fiberglass cloth, kraft paper, etc.
A: Free A4-sized samples are available for testing and evaluation; freight cost is collected by the receiver. Third-party inspection is acceptable for bulk orders.
A: Water-repellent glass wool undergoes special treatment with water repellency over 98% and water absorption ≤0.5 kg/m² (24h). It fits high-humidity environments and cold storage with strict moisture-proof requirements. Standard type is for regular dry environments.
Qingdao Pristine Steel Structures and Engineering Co., Ltd.
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