Rockwool and glasswool are both types of mineral wool insulation, which is made from spun fibers of molten rock or glass. They are both effective at insulating homes and businesses from heat, cold, and noise. However, there are some key differences between the two materials. Rockwool Made from basalt rock Higher melting point (1000°C) than glasswool (600°C) More fire-resistant Better sound absorption More water-resistant Cheaper than glasswool Glasswool Made from recycled glass Lower melting point than rockwool Less fire-resistant Less effective at sound absorption Less water-resistant Less expensive than rockwool Which one is better? The best type of insulation for your needs will depend on a number of factors, including your budget, the climate you live in, and the specific applications you need it for. If you are looking for the best possible fire resistance and sound absorption, then rockwool is the better choice. It is also a good option for use in humid environments, as it is more water-resistant than glasswool. If you are on a budget or need to insulate a large area, then glasswool is a more affordable option. However, it is important to keep in mind that it is less effective at fire resistance and sound absorption than rockwool. Here is a table summarizing the key differences between rockwool and glasswool: Property Rockwool Glasswool Melting point 1000°C 600°C Fire resistance Excellent Good Sound absorption Excellent Good Water resistance Excellent Good Cost Less expensive More expensive Applications Rockwool is commonly used in commercial and industrial applications, such as: Boiler plants HVAC systems Firewalls Soundproofing studios Glasswool is commonly used in residential and commercial applications, such as: Attics Walls Floors Ceiling tiles Conclusion Both rockwool and glasswool are effective insulation materials. The best choice for your needs will depend on a number of factors, including your budget, the climate you live in, and the specific applications you need it for.