Glass wool is a fibrous insulation material made primarily of glass using a high-speed centrifugal process. Due to its fine fibers, stable internal air structure, and adjustable density, it has long been used in construction, HVAC, and industrial piping. The main characteristics of glass wool are its thermal insulation performance, sound absorption, lightweight nature, and durability.

I. Low Thermal Conductivity, Suitable for Insulation Layers

Glass wool is composed of numerous evenly distributed fine fibers and air pores. This structure results in a low thermal conductivity, effectively reducing heat transfer. In building walls, ceilings, air conditioning ducts, and equipment insulation, glass wool helps maintain stable indoor temperatures and improves energy efficiency.

II. Good Sound Absorption, Suitable for Noise Reduction

Fiber materials naturally possess sound absorption capabilities. Airflow between fibers generates friction, thus dissipating sound energy. Therefore, glass wool is commonly used in noise control locations such as computer rooms, cinemas, office building partitions, and ceilings. It can reduce mid-to-high frequency noise and improve the acoustic environment of the space.

III. Lightweight and Easy to Install

Glass wool is a lightweight material with a flexible density range, allowing it to be manufactured into rolls, boards, or aluminum foil-coated products according to project needs. It is convenient to transport and easy to cut during construction, facilitating large-area laying or covering complex areas such as elbows and pipe joints.

IV. Possesses Certain Fire Resistance

Glass fiber itself is a mineral material and is not easily combustible. With a reasonable system structure, it can be used as a component of fireproofing and insulation, such as for duct wrapping and machine room partitions. However, its fire resistance needs to be comprehensively evaluated based on product rating and the usage environment and should not replace professional fireproof materials.

Glass Wool Rolls

V. Good Dimensional Stability and Not Easily Deformed by Temperature Changes

Glass wool exhibits minimal dimensional change in hot and cold environments. In long-term projects such as air conditioning systems, building interlayers, and equipment insulation, it maintains good shape and insulation performance, and is not prone to cracking or delamination due to thermal expansion and contraction.

VI. Can be laminated with multiple surface layers to enhance functionality

Common surface layers include aluminum foil, fiberglass cloth, and black adhesive cloth, which can improve moisture resistance, vapor barrier properties, or tensile strength. Laminated glass wool is commonly used for air conditioning ductwork, chilled water pipe insulation, or in areas requiring additional moisture protection.

Aluminum foil glass wool felt

VII. Wide range of applications, adaptable to different engineering needs

Glass wool, with its stable performance, is widely used in building energy conservation, industrial insulation, ventilation and air conditioning systems, and marine sound insulation. It comes in various specifications to meet the needs of projects with different thicknesses, densities, and functions.

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