Insulation Glass Wool Blanket Kraft Paper Faced

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Production Description

Glass wool blanket is in flexible form for ease of installation over large areas. Both products are available to order with a wide range of density and thickness, and with various types of facing applied.

Standard Size






10 - 48











Other sizes available upon request  Facing materials can be applied upon request

Technical Data




Average Fiber Diameter



Water Content



Grade of Combustibility

Non-Combustible Grade A

Thermal Conductivity

( 25℃)


0.038- 0.045

Reshrinking Temp





Moisture Rate



Noise Resistant Coefficient (NRC)


Slag Inclusion Content




Glass Wool are widely used in public, commercial and residential buildings as well as industrial plants, for applications such as roofing, external wall, partition wall and floating floor to provide fire protection, thermal insulation, acoustic control and condensation control.

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Q:What is the construction process of external wall glass wool board?
First, fix the glass wool to the wall with insulation supporting pins to prevent falling. A vapor barrier must be built on the surface of glass wool in order to prevent moisture condensation in the air within the glass wool, which may lead to the decrease of thermal insulation performance. (1) base treatment 1) the vertical control line of the entire surface must be correct, and the verticality of corners must be strictly controlled. 2) clean the floating dust, greasy dirt of release agents of concrete wall surface, masonry wall projections must be removed with a small shovel. 3) clean up the concrete blocks, slags in the joint part of shear walls, then repair again, according to the thickness of ash cake with the proportion of 1:3, and paster with cement mortar.
Q:does the glass wool can be used as building materials?
Yes. there are many applications in the noise reduction, such as steel structure, air-conditioning pipes, elevator shaft. all are still in use. do you have the project in this aspect?
Q:Sound absorption and sound insulation How is the sound insulation effect of glass wool?
Thesound insulation effect of sound absorption and sound insulation glass fiber is good. The fiber inside is fluffy and staggered, with a lot of tiny pores, which is typical porous sound-absorbing material and has good sound absorption properties. Glass wool can be made into wallboard, ceiling, space absorber, etc., which can absorb a lot of sound energy within the room, reducing the reverberation time and indoor noise.
Q:How to distinguish green glass wools?
Rock wool is much harder than glass silk. rock wool color: Khaki, deep. glass silk wool color: yellow, light. Cellosilk is not the same. Rock wool is harder while glass silk wool is softer. Rock wool is white, without elasticity. It is irritating to skin. But glass wool is yellow, with elasticity and without irritation to skin. Glass wool is made through high temperature melting of industrial waste glass, and then making glass into flow by high-speed centrifuge, pulling glass flow into fiber under high temperature and high speed. Rock wool is inorganic fiber made by base materials of fine basalt after high temperature melting in high-speed centrifugation equipment. Glass wool is more economical and environmentally friendly than rock wool.
Q:To reach better sound absorption effect, which should be filled in the keel, glass wool felt / board or polyester fiber cotton felt / board ?
Both materials are inappropriate to used for noise insulation, for glass wool and polyester fiber cotton are sound-absorbing materials. Neither is good for sound insulation. They can be used to prevent echo formation in the room, and their function is to reduce the reflection of sound indoors.
Q:Which kind of thermal insulation glass wool is the best?
Insulated wool is good. Rock wool: It is also known as rock cotton, which belongs to mineral wool. It is a fluffy, short and fine fiber made up raw materials like natural rocks and minerals. Rock wool, whose main raw material are natural rocks like basalt, gabbro, dolomite, iron ore, bauxite and more, is an inorganic fiber made by melting at high temperatures and fibering. Rock wool can serve as the insulation material with ablation resistance and high temperature resistance, the sound-absorbing material and insulation material of buildings and equipment, and the reinforcing material of cement product and rubber for sustituting natural asbestos, and high temperature sealing material, high-temperature filtering material and high-temperature catalyst carrier. 1. Insulation properties: Good thermal insulation is the basic property of rock wool and mineral cotton products. 2. Combustion performance. 3. Sound insulation performance: Rock wool and mineral cotton products have excellent sound insulation and sound absorption performance.
Q:Is centrifugal glass wool or rubber and plastic insualtion board better for air-conditioning air duct insualtion?
Rubber and plastic insulation board is better.
Q:How can I fix the glass cotton insulation board to the wall?
If you have used composite boards as internal wall, you don't have to deal with the final layer engineering. Since composite boards are smooth both inside and outside, as well as flawless. If you really want to do the surface construction, you will use many materials. Because there are no composite boards with pure plane in the market, they all have grooves on the surface, and the grooves can increase the load bearing strength of composite boards. Supplement: That glass wool composite boards are fireproof boards with metal surface. With rock wool and glass cotton as main materials, they use high-quality color coating steel plates as plane materials, continuous cotton fiber rock wool and glass wool as core materials, high-density rigid foam polyurethane as filling materials of tongue-and-groove. After high-pressure foaming and curing, automatic compacting, as well as ultra-long double caterpillar track controling, they take shape and become composite materials.
Q:Are thermal insulation glass wool boards hydrophobic?
It has poor performance in fireproofing and thermal insulation, and has a high heat conductivity coefficient. At present, it meet requirements of thermal insulation and energy saving policy for external walls. Glass wool is heavy itself, easy to slag. It can lead to serious pollution during construction and produce cancerogenic substance. It is highly absorbent, and easy to peel off. The operation life of which is short.
Q:If the glass wool is used for thermal insulation outside seamless steel tube, should the pipe be rust-proof and sprayed paint?
Definitely need. Insulating layer can be used as antii-corrosion coating! Do according to the design and painting specifications!

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