The majority of Isover products are manufactured in the UK at our Runcorn site – with a selection of other products produced in Sweden, Poland, Netherlands and Germany.
Where can I find information on the density of your products?
We do not publish standalone density information, however all Runcorn manufactured products do have their density published in their Environmental Product Declarations. You can find a list of them here. If you require any more information or assistance, please contact our Technical Support Team
I have severe allergies, and my contractor is installing Isover. What’s in the product?
We are unable to provide specific case advice – however, please refer to our Safe Use Instruction Sheet (SUIS), a link to which you’ll find below. Our product contains less than 1% mineral oil, which is added to reduce dusting of the glass mineral wool.
Yes. In 2025, we also reduced the ink coverage in our white packaging to less than 15%. This reduction means our packaging can now be used to produce a wider variety of items made of recycled content than previously. This is because using a higher proportion of white plastic makes it more versatile. Our packaging also contains 30% Post Consumer Recycled content, which means less raw virgin materials go into our packaging and further strengthens our commitment to sustainability.
