Glass Wool Blanket Bare For Buildind Thermal Insulation

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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:Whether the rigid section of aluminium foil glass wool can be twined with glass fiber cloth
This is not necessary, it depends on the place the shell is used, the best thing is to add a layer of insulation tape.
Q:How is the insulation property of glass wool color steel plate?
It has poor insualtion property but good firepoof property. Rock wool insualtion board is recommended.
Q:Choosing glass wool with proper thickness for piping insulation of Dn900 boiler room.
If using glass wool, Dn900 pipes must be equipped with insulating layer which is equal to or greater than 100mm. The best working temperature of glass wool does not exceed 300 degrees. Glass wool should keep 0.035 to 0.046 in thermal conductivity. The best working temperature of glass wool does not exceed 300 degrees. It will generate good effect if using aluminum silicate or silicate. Silicate is a closed-cell insulation material with high temperature resistance, so silicate is the most energy-efficient material.
Q:What are the hardnesses of rock wool and glass wool respectively? Are there any requirements on saw blade?
I do not know about the hardness, but I know that ordinary hacksaw is enough. I'm sorry, I don't have calculation parameters.
Q:How to conduct thermal insulation construction of external wall glass wool?
The construction period of insulation consrtuction of this project takes 20 days, which is a tight schedule, so the insulation construction should be organized properly to ensure the insulation construction period. The insulation construction of Dingfuzhuang secondary school needs to undergo the following process: firstly conduct construction of external wall insulation of teaching building; secondly conduct construction of external wall insulation of laboratory building and finally conduct construction of external wall insulation of cafeteria. Scaffolds of the outer edge of the teaching building have been fully completed, so the four facades of the teaching building can be constructed simultaneously in a bottom-up way. When shotcrete construction of the outer edge of laboratory building finished, it then can conduct insulation construciton of the outer edge of laboratory building. At this time, thermal insulation construction of teaching building have not fully completed, which requires supplement labor force to ensure thermal insulation construction of these two buildings to be conducted simultaneously. When the outer edge of cafeteria is qualified for thermal insulation construction, it needs to supplement labor force for thermal insulation construction, so that these three building can conduct thermal insulation construction simulanteously.
Q:What's the heat conductivity coefficient of Kunnai glass wool blanket?
Between 0.03-0.06, generally the lower the heat conductivity coefficient is, the better the thermal insulation effect is.
Q:what is the specification of glass wool air duct?
The long side size of the air duct(round air duct diameter), and the air duct work pressure depands: Low pressure systems: P 500 pa or less medium voltage system: In 500 pa1500pa middle and low pressure,take thickness of the galvanized iron air duct as example: Long side size of air duct b ≤320 mm: 0.5 mm320
Q:What are the purposes of centrifugal glass wool?
Function: sound absorption and insulation, as well as thermal insulation of walls.
Q:What are the disadvantages of glass wool? What are the technical limitations in application?
Glass wool is one kind of the glass fiber and it is a man-made inorganic fiber. Glass is made by melting such raw materials as quartz sand, limestone, dolomite and other natural ore with some chemical materials like pure alkali and sodium borate. In the molten state, the glass is thrown into fine fibers in the shape of floc by the with external force. These fibres vertically interwine and show many small gaps. These gaps can be regarded as air void. Thus, glass wool can be regarded as porous materials and it is of good insulation and sound absorption performance.
Q:The difference between glass wool of 50mm and rock wool.
Glass wool belongs to one of the glass fiber. machine-made fiber cotton wool molten glass fibrosis cotton material belong to glass fiber. type, bulk density, low thermal conductivity, thermal insualtion, acoustic insualtion, anticorrosion, stable chemical performance. Rockwool is also called mineral wool. Use Guangde Shida rock wool and mineral raw materials to make fluffy short fine fibers. Basalt rock wool, pyroxenite, dolomite, iron ore, bauxite can be used to make matrix fiber by going through high temperature melting process and fibrosis.

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