How to compare rock wool and fibreglass insulation

Written by amy rodriguez
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How to compare rock wool and fibreglass insulation
Fibreglass (NA/ Images)

Insulation is a key component in keeping a building warm during the winter months, and cool during the summer months. Electric and gas energy bills can be lessened with the right kind of insulation, as well as proper installation.

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Two popular types of insulation are rock wool and fibreglass. Both materials conserve energy for a building, but have a distinct difference.


Fibreglass is used mainly in building walls for muting sounds and temperature control and wrapped around piping to conserve any heat that might be lost. On the other hand, rock wool insulation has special attributes in its structure that makes it a good material to stop fires from spreading in a building.


Rock wool insulation is more expensive than fibreglass due to its high melting range between 980 and 1,100 degrees C. For a typical household, fibreglass is a budget friendly, durable material that can save energy and keep the inhabitants comfortable during any season.

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