Mineral Wool : Discover ULTIMATE made from Glasswool and Stonewool by Isover

ULTIMATE™ Mineral Wool

Published 31 March 2015
ULTIMATE is an innovative mineral wool combining the performance benefits of glasswool and stonewool.
ULTIMATETM is a groundbreaking innovation in mineral wool - a material that truly demonstrates Saint-Gobain ISOVER's technological leadership in insulation products. It represents a completely new generation of insulation to add to the wide range of mineral wools, foams and other insulants now available from ISOVER worldwide .

ULTIMATETM is a unique and innovative product that provides a combination of outstanding benefits for customers that are not available in any other single insulation product:
  • Excellent thermal and acoustic performance
  • Highest performance in fire safety and high temperature operation
  • Significant time, space and weight savings
  • Excellent comfort and safety

Production process

ULTIMATETM is manufactured using a similar process to that used for glass wool. However, the challenge for the development team was to develop a product capable of operation at much higher temperatures than traditional glass wool products. This was achieved following a breakthrough involving a new patented glass composition and extensive conversion of the basic glass wool manufacturing process.

Industrial process:

The process is entirely patented.

In order to create a brand new mineral wool that combined the high temperature performance of stone wool with the thermal, acoustic and low weight benefits of glass wool , it was originally thought that the answer would be found in a development of the stone wool process. The result was actually achieved by developing a new glass wool-based product with exceptionally high temperature resistance.
Ultimate manufacturing process

Two main developments made this possible:
  • Firstly, a new type of glasswool, with a composition similar to that of stonewool, had to be developed. As well as meeting demanding performance criteria, it also had to conform with European/national standards concerning fibre biosolubility in the human body.
  • Secondly, new high temperature melting and fiberising processes had to be developed.

The new process is similar to that for glasswool, except that temperatures are some 200°C higher, with glass in the fiberising spinner reaching a temperature of 1200°C.