It is harmful to human body so it is banned.
The fireproof?performance of these two all reaches A degree. Water absorption rate and heat conductivity coefficient of these two are basically the same. However, glass wool is cleaner than rock wool and rock wool is cheaper than glass wool.
In terms of fireproof effect, rock wool is certainly better than glass wool. The maximum temperature of rockwool is 1100 ℃, and glass wool is only 600 ℃. In addition if used in the external walls, the highest unit weight of glass wool can only be in the range of 60-90, but rock wool can be over 140. Generally glass wool can not be used in external wall at present. Only rock wool is A grade fireproof material.The heat conductivity coefficient of glass wool is lower than glass wool and the fibre length of rock wool is longer than glass wool. As for price, tons of glass wool rock is more expensive than that of rock wool. However, if counted by square size, glass wool is cheaper per square size than rock wool.
