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Glass Wool Blanket
- Density: 12-48 kg/m³
- Raw materials: Melten glass
- Size: Customizable
- Asbestos: 100% Non Asbestos
- Function: Fireproof, Thermal insulation, Sound absorption
- Certification: ISO9001/ISO14001/ISO45001/ISO50001
- Samples: Provide you free samples for testing
Custom Glass Wool Blanket for HVAC, Industrial & Marine Insulation
Choose our custom glass wool blankets for a tailored insulation solution that delivers performance, quality, and value.
Why choose Jianhong Refractory?
If you’re in search of the finest Rockwool Blanket/Felt for optimal solutions to serve your clients, look no further than Jian Hong Refractory. Our meticulous practices ensure the delivery of top-tier Rockwool Blanket/Felt.
Low MOQ
Jian Hong Refractory offers flexible production, accommodating orders from 1 to 10,0000 units on demand.
Fast delivery
Our mature production line facilitates 24/7 operations, enabling rapid turnaround and prompt delivery.
Competitive Price
We guarantee the most competitive prices while maintaining the highest quality standards compared to other suppliers.
Expert Production
Equipped with three modern production lines, our facilities ensure consistent quality and timely delivery, setting us apart from others in the industry.
Satisfaction Assurance
With a focus on refractory product quality and clear communication, we ensure that every step is streamlined for the ease and satisfaction of our clients.
Comprehensive Product Range
Beyond high alumina bricks, our portfolio includes castables, insulation bricks, ceramic fiber products, and refractory raw materials, providing a one-stop solution unlike competitors with limited ranges.
1 Refractory Raw Materials
2 Crushing and Grinding
3 Screening and Mixing
4 Formulation and Batching
5 Molding and Shaping
6 Drying
7 Pre-Firing Inspection
8 Firing in Kiln
9 Firing Completed
10 Final Quality Inspection
11 Packaging
12 Transport and Delivery
The Ultimate Buyer’s Guide: How to Purchase Glass Wool Blanket
Are you in the market for Glass Wool Blanket? Look no further.
This all-inclusive buyer’s guide provides you with crucial insights into Glass Wool Blanket, which find applications in commercial residential industry, Houses and buildings industry, marine industry, chemical industry and other insulation, fireproofing, sound control industries. Whether you’re contemplating importing them for your projects or planning local distribution, this guide furnishes invaluable information to guide your decision-making process.
Chapter 1
What is Glass Wool Blanket?
Lightweight thermal and acoustic insulation for versatile use
Glass Wool Blanket is a soft, roll-form insulation material made by spinning molten glass into fine fibers and binding them with resin. Lightweight, flexible, and easy to handle, it is designed for a wide range of thermal and acoustic insulation applications. Glass Wool Blanket delivers excellent performance in reducing heat transfer, controlling noise, and resisting fire—making it ideal for HVAC duct insulation, industrial piping, steel structures, and marine bulkheads.
Typically faced with aluminum foil, kraft paper, or glass fabric, it resists moisture and maintains performance in harsh environments. With densities ranging from 16–48 kg/m³ and compliance with ASTM and EN standards, it is a trusted choice for contractors and engineers worldwide. Whether for energy efficiency or fire safety, Glass Wool Blanket offers dependable, cost-effective insulation in large-scale construction projects
Chapter 2
Features of Glass Wool Blanket
Proven performance in demanding environments
- Excellent Thermal Insulation:
Low thermal conductivity (≤0.042 W/(m·K)) cuts energy loss in buildings and ducts. - Superior Sound Absorption:
Traps airborne noise, achieving 30-40dB reduction for quiet interiors. - Fire Retardant:
Class A1 non-combustible, resisting high heat per ASTM E136 standards. - Lightweight & Flexible:
Easy to install on curved surfaces, reducing labor costs for global projects. - Moisture Resistant:
Repels water vapor, maintaining performance in humid climates like Southeast Asia. - Eco-Friendly:
Made with 80% recycled glass, ISO 14001 certified for sustainable construction. - Specifications of Glass Wool Blanket.：
Common specs: thickness 25-100mm, length 10-20m, width 1200mm; density 16-48kg/m³; thermal conductivity ≤0.042 W/(m·K); Class A1 fire rating, CE & ASTM compliant.
Chapter 3
Specifications of Our Glass Wool Blanket
| Model | Density (Kg/m3) | Thickness (mm) | Width (mm) | Length (mm) | Thermal conductivity (W/(m·K)) |
|---|---|---|---|---|---|
| JH10 | 10 | 50 | 1200 | 30000 | 0.044 |
| 75 | 1200 | 20000 | |||
| 100 | 1200 | 15000 | |||
| JH12 | 12 | 40 | 1200 | 30000 | 0.042 |
| 50 | 1200 | 30000 | |||
| 75 | 1200 | 20000 | |||
| 100 | 1200 | 15000 | |||
| JH16 | 16 | 25 | 1200 | 30000 | 0.039 |
| 50 | 1200 | 15000 | |||
| 75 | 1200 | 10000 | |||
| 100 | 1200 | 7500 | |||
| JH24 | 24 | 25 | 1200 | 20000 | 0.036 |
| 50 | 1200 | 10000 | |||
| 75 | 1200 | 10000 | |||
| 100 | 1200 | 5000 | |||
| JH32 | 32 | 25 | 1200 | 20000 | 0.035 |
| 50 | 1200 | 10000 | |||
| 75 | 1200 | 10000 | |||
| 100 | 1200 | 5000 | |||
| JH48 | 48 | 25 | 1200 | 20000 | 0.032 |
| 50 | 1200 | 10000 | |||
| 75 | 1200 | 5000 | |||
| 100 | 1200 | 5000 |
Chapter 4
Application of Glass Wool Blanket
Versatile insulation for energy and acoustic control
1. HVAC Systems
- Used to wrap air-conditioning ducts in commercial buildings to minimize energy loss and suppress noise transmission.
- Applied in industrial ventilation systems to regulate temperature and prevent condensation on metallic surfaces.
2. Metal and Prefabricated Buildings
- Installed under metal roofing sheets to reduce solar heat gain in factories and warehouses.
- Placed between wall panels in prefabricated buildings to maintain indoor comfort and reduce sound transmission.
3. Residential and Office Buildings
- Placed in ceiling cavities to reduce heat transfer and lower air conditioning costs in hot climates.
- Used in interior partition walls to dampen noise between rooms in apartments and corporate offices.
4. Fire Safety Applications
- Integrated behind cladding systems to provide thermal barrier and delay flame spread in emergency situations.
- Installed in public spaces like cinemas and auditoriums to meet fire rating codes and acoustic standards simultaneously.
Chapter 5
Quality Assurance for Glass Wool Blanket
Henan Jianhong Refractory strictly adheres to ISO 9001 quality standards, utilizing advanced testing equipment for comprehensive inspections. Every batch of our Glass Wool Blanket undergoes rigorous testing, ensuring it meets global quality benchmarks and your exacting requirements for reliability, durability, and performance.
The key quality tests typically include:
| Core Inspection Items | Inspection Content & Requirements | Reference Standards | Inspection Methods |
|---|---|---|---|
| Surface Quality & Integrity | No damage, holes, severe agglomeration/linting; uniform fiber distribution. Boards/blankets: No severe edge chipping. Pipe sections: Flat ends, no cracks. | GB/T 13350 Thermal Insulation Products—Glass Wool and Its Products | Visual inspection under natural light; manual touch for flatness. (Optional: Ruler check for edge chipping ≤5mm). |
| Key Dimensional Accuracy | Thickness deviation ≤±5% (boards/blankets/pipe sections). Length/width deviation ≤±5mm (boards/blankets). ≤0.044 W/(m·K) at 70℃ (general); ≤0.040 W/(m·K) at 25℃ (high-precision). | GB/T 13350 | Measure with steel ruler/caliper. (Thickness: Use thickness gauge with 2kPa±0.5kPa pressure; average from multi-points). |
| Thermal Conductivity (70℃/25℃) | ≤0.044 W/(m·K) at 70℃ (general); ≤0.040 W/(m·K) at 25℃ (high-precision). Directly determines thermal insulation efficiency. | GB/T 10294 (Heat Flow Meter Method) GB/T 10295 (Guarded Hot Plate Method) | Heat Flow Meter (routine rapid test)or Guarded Hot Plate Method (high-precision calibration, simulating actual service temperature). |
| Bulk Density | Matches nominal value (typical range: 10–96 kg/m³; e.g., 24–48 kg/m³ for boards). Affects strength and insulation synergy. | GB/T 13350 | Cut regular samples (≥100mm×100mm×nominal thickness).Weigh with electronic balance (0.1g precision); calculate density from volume. |
| Average Fiber Diameter | ≤8μm (Overly thick fibers reduce insulation; overly thin fibers cause linting).Ensures structural and insulation synergy. | GB/T 5480.4 Test Methods for Fiber Diameter of Mineral Wool and Its Products | Optical microscope (≥400× magnification).Randomly measure 100 fibers; calculate average. |
| Tensile Strength (Longitudinal/Vertical) | Boards: Vertical strength ≥10 kPa. Blankets: Longitudinal strength ≥5 kPa. Prevents cracking during installation/use. | GB/T 13350 | Universal testing machine (sample: 150mm×50mm; speed: 50mm/min).Calculate strength from breaking load. |
| Combustion Performance Rating | Must reach Non-combustible Class A1 (core building insulation requirement per GB 8624). Flame spread and smoke production meet limits. | GB 8624 Classification for Combustion Performance of Building Materials and Products GB/T 5464 Test Methods for Non-Combustibility of Building Materials | Cone calorimeter (full-size samples) or non-combustibility test (for Class A1).Classify by heat release, smoke density, etc. |
| Formaldehyde Emission | ≤0.1mg/m³ (meets indoor environmental safety per GB 18580). Avoids decoration pollution. | GB 18580 Limit of Formaldehyde Emission of Wood-based Panels and Finished Products for Indoor Decoration | Environmental test chamber (volume ≥1m³; temperature 23℃±1℃). Detect with gas chromatography. |
| Asbestos Content | Asbestos-free (content <0.1%; mandatory compliance). Eliminates health hazards. | GB/T 23263 Test Methods for Asbestos Content in Asbestos Products | Polarized light microscopy (qualitative) + X-ray diffraction (quantitative). Analyze fiber morphology and composition. |
Through this meticulous testing process, we ensure that our Glass Wool Blanket products meet the highest standards of quality, reliability, and performance, making them ideal for various applications in various industries.
Chapter 6
Chapter 7
In Summary
Rockwool blanket offers fire resistance, thermal efficiency, sound absorption, and durability, with versatile applications in industry, construction, and more—backed by strict quality assurance.
We provide customizable Rockwool blankets, exporting to 30+ countries. With advanced production lines and responsive after-sales service, we meet your project’s unique insulation needs.
Ready to elevate your operations?
Contact Henan Jianhong Refractory Materials today—let us be your reliable source for durable, high-performance refractory solutions.
