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FAQs

Here are some of our most frequently asked questions on MIMA and Mineral wool. If you click on a question it will take you to a general guide containing the answer.

  • What is MIMA (formerly Eurisol)?

    MIMA stands for the Mineral Wool Insulation Manufacturers Association. We are a trade body that represents the UK manufacturers of mineral wool insulation.

  • Who are the members of MIMA?

    Saint Gobain Isover, Knauf Insulation, Rockwool and Superglass. See here for further details

  • What is mineral wool?

    Mineral wool is a non-metallic, inorganic product manufactured from a carefully controlled mix of raw materials, mainly comprising either rock or silica which are heated to a high temperature until molten. The molten glass or rock is then spun and formed into a flexible, fibrous mat for further processing into finished products.

    The exceptional thermal, fire and acoustic properties of mineral wool derive from the mat of fibres that prevents the movement of air, and from mineral wool’s inert chemical composition.

    It is a very versatile material, and can be manufactured to many different densities to give varying properties, formed in various shapes and faced with a variety of sheet materials. The range of products includes loose granular material used for blown insulation of cavity walls, slabs for walls, rolls for loft insulation through to pre-formed and faced pipe sections, ceiling tiles and acoustic panels.

  • Is mineral wool recyclable?

    Mineral wool can be recycled - contact individual MIMA members.

  • Does mineral wool have any recycled content?

    Yes, mineral wool insulation has up to 80% recycled content depending on the product - contact individual MIMA members.

  • How will mineral wool perform in the event of a fire?

    Mineral wool is the ideal fire protection material since it is non-combustible.

  • What is the difference between glass mineral wool and rock mineral wool?

    Glass mineral wool is manufactured from molten silica.  Rock mineral wool is manufactured from molten rock.

  • Is mineral wool carginogenic?

    No. A Health, Safety and Environment information leaflet is available on request.

  • What is the Global Warming Potential of mineral wool?

    Mineral wools do not contain ozone-depleting or global warming substances, nor are these used in their manufacture. It has a Global Warming Potential (GWP) of less than 5.