Glass Fiber Insulation Felt, also known as Glass Wool Felt, is a high-quality, versatile thermal insulation material widely used across industrial, commercial, and residential applications. Produced from premium glass fibers using advanced wet-laid or dry-laid processes, this insulation felt provides exceptional heat resistance, energy efficiency, and sound absorption capabilities.
（1）Low thermal conductivity, effective thermal insulation
（2）Low heat capacity, stable thermal performance
（3）Good acoustic absorption and vibration reduction
（4）Flexible structure, easy installation
（1）Industrial pipeline and equipment thermal insulation
（2）HVAC duct insulation for commercial and industrial buildings
（3）Boilers, tanks, and medium-temperature equipment insulation
（4）Shipbuilding insulation for thermal and acoustic control
（5）Sound absorption and thermal insulation for buildings and machinery
| Performance Category | Specific Item | Parameter | ||||||||||||||||||
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| Main Components | Components (Weight Percentage) |
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| Thermal and Optical Properties | Flammability/Linear Expansion Coefficient/Specific Heat, etc. | Non-combustible; Linear expansion coefficient 4.8×10⁻⁶cm/cm/℃; Specific heat 0.19cal/g℃; Heat resistance 710℃; Refractive index 1.55 (25℃) | ||||||||||||||||||
| Mechanical Properties | Tensile Strength/Elongation Strength, etc. | Tensile strength 350kg/mm²; Modulus of elasticity 7300kg/mm²; Transverse tensile strength 35.6N/50mm; Longitudinal tensile strength 97.2N/50mm | ||||||||||||||||||
| Electrical Properties | Dielectric Constant/Volume Impedance, etc. | Good insulation; Dielectric constant (10²Hz-6.43, 10⁴Hz-6.32, 10⁶Hz-6.11); Volume impedance 10¹⁰Ω·cm | ||||||||||||||||||
| Corrosion Resistance | Characteristics | Non-water-absorbent, non-corrosive, non-moldy | ||||||||||||||||||
| Cost Characteristics | Characteristics | Low-cost reinforcing material (low cost for the same strength effect) | ||||||||||||||||||
| Density | Range | 100-200kg/m³ | ||||||||||||||||||
| Thermal Insulation Rate (Density 200kg/m³) | Thermal Conductivity Coefficient at Different Temperatures |
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| Sound Absorption Performance | Sound Absorption Coefficient at Different Frequencies |
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Glass Fiber Insulation Felt, also known as Glass Wool Felt, is a high-quality, versatile thermal insulation material widely used across industrial, commercial, and residential applications. Produced from premium glass fibers using advanced wet-laid or dry-laid processes, this insulation felt provides exceptional heat resistance, energy efficiency, and sound absorption capabilities.
Designed for both high-temperature industrial environments and everyday insulation needs, it is lightweight, flexible, and easy to handle, making it ideal for wrapping pipelines, lining furnaces, insulating ducts, and covering walls and ceilings. With long-term durability and chemical stability, our Glass Fiber Insulation Felt offers cost-effective insulation solutions for energy-saving and acoustic control projects.
The felt is particularly suitable for high-temperature applications, capable of withstanding temperatures up to 550 degrees Celsius or 1022 degrees Fahrenheit. Its low thermal conductivity ensures minimal heat transfer, significantly reducing energy consumption in industrial systems, HVAC ducts, and commercial buildings.
Customers who have switched from traditional mineral wool or rock wool to glass fiber felt report substantial energy savings, improved temperature stability, and reduced maintenance costs. The material's fibrous structure not only traps heat efficiently but also absorbs sound waves, making it an excellent choice for machine rooms, studios, office spaces, and any environment where noise reduction is critical.
In addition to thermal and acoustic benefits, Glass Fiber Insulation Felt is chemically stable, resistant to moisture, and non-corrosive. It does not promote mold growth or degrade in humid conditions, providing reliable performance over many years. It is also non-combustible, ensuring safety in both industrial and residential installations.
The combination of flexibility, lightweight design, and high thermal efficiency makes it a preferred choice for engineers, contractors, and project managers seeking reliable insulation materials.
Our felt is available in various densities ranging from 48 to 128 kilograms per cubic meter and thicknesses from 10 to 100 millimeters, with customizable widths and lengths to suit any project requirement. Rolls, blankets, and sheets are all available for convenient installation.
Industrial Performance and Proven Applications
The performance of Glass Fiber Insulation Felt has been proven in a variety of demanding industries. In the steel industry, high-temperature furnaces require materials that can maintain extreme heat while reducing energy loss.
One steel manufacturing plant in Germany replaced traditional mineral wool insulation with our glass fiber felt in 2019, achieving consistent high temperatures while reducing energy consumption by 25 percent.
In HVAC applications, commercial office buildings in the United Kingdom have used our felt to insulate air ducts and ceilings, leading to reduced noise levels and lower heating and cooling costs.
Chemical plants in the United States have insulated high-temperature pipelines with our felt, successfully maintaining critical process temperatures and minimizing corrosion and maintenance issues. These examples demonstrate the material's versatility and reliability across different industrial and commercial scenarios.
Glass Fiber Insulation Felt is also widely used for acoustic control. Its dense fibrous structure absorbs sound efficiently, reducing reverberation and background noise in factories, studios, auditoriums, and machine rooms.
By combining thermal insulation and acoustic performance, it provides a dual benefit that enhances comfort and safety in industrial and commercial environments.
Ease of Installation and Handling
Its lightweight and flexible nature allows it to be easily cut, shaped, and wrapped around irregular surfaces, such as curved pipes, valves, and ductwork. This reduces installation time and labor costs compared to rigid boards or mineral wool slabs.
The material’s chemical and fire-resistant properties further expand its range of applications. It is non-combustible, corrosion-resistant, and stable under moisture exposure, meeting ISO 9001 and CE certifications.
Factory tests ensure consistent thermal conductivity, density, and mechanical durability. The felt is environmentally friendly, made from recycled glass and compliant with RoHS standards. Its long-term reliability ensures that projects maintain their energy efficiency and acoustic performance for many years, reducing the need for replacements and lowering total life-cycle costs.
Technical Characteristics
Technical specifications of our Glass Fiber Insulation Felt include thermal conductivity ranging from 0.035 to 0.045 W/m·K, maximum service temperature of 550 degrees Celsius, and density between 48 and 128 kilograms per cubic meter.
Thickness can be customized from 10 to 100 millimeters, and roll widths range from one to two meters. The material is available in yellow or white colors and supplied in rolls, blankets, or sheets.
Custom sizes and specifications are available for large-scale industrial projects, ensuring that each application receives the optimal insulation solution.
Installation Guidelines and Safety
Installation of glass fiber felt is straightforward. For cutting and shaping, a sharp knife or insulation cutter is recommended, with protective gloves to prevent skin irritation.
Rolls or blankets can be secured using insulation wires, adhesive tapes, or fasteners depending on the surface. The material should be stored in dry conditions to maintain its integrity and avoid moisture absorption.
Safety precautions include wearing gloves and a mask to prevent fiber inhalation during installation. Proper handling ensures that the insulation retains its thermal and acoustic performance over the long term.
Comparison with Other Insulation Materials
When compared with other insulation materials such as mineral wool and rock wool, Glass Fiber Insulation Felt offers significant advantages.
It is lighter and more flexible, allowing for faster installation and less labor cost. Its thermal conductivity is slightly lower, providing higher energy efficiency in many applications.
The material is highly effective in sound absorption, often outperforming mineral wool and rock wool in acoustic applications. These combined benefits make glass fiber felt a cost-effective choice for large industrial, commercial, and residential projects, providing long-term savings on energy and maintenance.
Industry Coverage
Many industries rely on Glass Fiber Insulation Felt to optimize their processes and improve safety.
In the power generation sector, it insulates boilers and turbines, reducing energy loss and protecting personnel from high-temperature surfaces.
Petrochemical and chemical plants use it for pipeline and storage tank insulation, ensuring precise temperature control for chemical reactions and preventing condensation.
In the food processing industry, it maintains stable temperatures in ovens and cooking equipment while providing a sanitary, corrosion-resistant insulation layer.
Cement, glass, and steel plants rely on it for high-temperature furnace lining, achieving consistent thermal performance and prolonging equipment lifespan.
HVAC and Building Applications
Glass Fiber Insulation Felt is also an ideal solution for HVAC applications. Insulating air ducts, walls, and ceilings not only reduces energy costs but also improves indoor air quality and noise reduction.
Offices, commercial buildings, and residential complexes benefit from its dual thermal and acoustic properties, creating comfortable environments for occupants.
The material is easy to retrofit in existing structures or integrate into new construction, providing flexibility for architects and contractors.
Customer Feedback and Project Results
Our customers consistently report high satisfaction with Glass Fiber Insulation Felt.
A commercial office building in the UK noted significant energy savings and a quieter environment after retrofitting their HVAC system with our insulation.
A steel plant in Germany achieved consistent furnace temperatures and lower energy consumption after installing felt in place of mineral wool.
A chemical plant in the US maintained critical pipeline temperatures and reduced maintenance costs with our high-quality felt.
These project cases demonstrate the reliability, versatility, and cost-effectiveness of our insulation solution across various industrial and commercial environments.
Environmental Responsibility
Environmental considerations are increasingly important in modern construction and industrial projects.
Our Glass Fiber Insulation Felt is manufactured using recycled glass and complies with RoHS standards, ensuring that it is environmentally responsible.
The production process minimizes waste, and the material's long lifespan reduces the need for frequent replacement, contributing to sustainable building and industrial practices.
Customers looking for green insulation solutions will find this material an excellent choice for both environmental and economic reasons.
Customization and Quality Assurance
For industrial projects, Glass Fiber Insulation Felt is available in custom sizes, thicknesses, and densities to meet specific project needs.
Rolls, blankets, and sheets can be tailored for pipelines, tanks, HVAC ducts, and furnace lining.
Quality assurance is paramount in industrial insulation. Our Glass Fiber Insulation Felt undergoes rigorous factory testing to ensure consistency in thermal conductivity, density, and mechanical durability.
Certifications include ISO 9001, CE, and SGS approvals, demonstrating compliance with international quality and safety standards.
Conclusion
In conclusion, Glass Fiber Insulation Felt provides a comprehensive solution for thermal and acoustic insulation needs across industrial, commercial, and residential applications.
Its combination of high-temperature resistance, low thermal conductivity, chemical stability, acoustic absorption, and flexibility make it a superior choice over alternative materials such as mineral wool or rock wool.
Project case studies from steel plants, HVAC retrofits, and chemical plants demonstrate its real-world performance, reliability, and cost-effectiveness.
The material's environmental credentials, certifications, and long service life further reinforce its suitability for modern insulation projects.
FAQs
What is the maximum temperature Glass Fiber Insulation Felt can handle?
Standard felt can withstand up to 550 degrees Celsius. Specialty grades are available for higher temperatures.
Can it be used in chemical plants?
Yes, the material is chemically stable and resistant to corrosion, suitable for pipelines, tanks, and process equipment.
How does it compare with mineral wool?
It is lighter, more flexible, easier to install, and offers slightly lower thermal conductivity and better acoustic absorption.
Can it be cut to custom sizes?
Yes, rolls, sheets, and blankets can be customized according to project requirements.
How long does it last?
Typical service life ranges from 10 to 15 years depending on environmental conditions and installation quality.
Is it environmentally friendly?
Yes, it is made from recycled glass and complies with RoHS and EU environmental standards.
Where is it commonly used?
Steel industry furnaces, boilers, chemical pipelines, HVAC systems, soundproofing in offices and studios, and commercial and residential construction projects.
How is it installed around irregular shapes?
Its flexible nature allows easy wrapping around pipes, valves, and ductwork, reducing heat loss and installation time.
Call to Action
Ensure your project achieves maximum energy efficiency and acoustic performance with our premium Glass Fiber Insulation Felt.
Contact us today for a free consultation or quote. Get high-quality insulation that delivers long-term reliability, cost savings, and superior performance across industrial, commercial, and residential applications.
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