scope:

This International Standard specifies the properties and acceptable tolerances for cellulose fibre loose-fill thermal insulation for horizontal applications in ventilated attic, loft or roof spaces of buildings.

Part 1 of the standard specifies the requirements for the conformity control sampling and level of conformity control.

While no part of CD12574 addresses the methods for installing cellulose fibre loose-fill thermal insulation in buildings, Part 2 gives guidelines and a framework for the responsibilities of the installers of cellulose fibre loose-fill in the installation and the documentation of the installation. Owners of the buildings can have greater confidence that the installer of the insulation was aware of the techniques that were necessary to produced an installation in which product that is manufactured and packaged according to ISO 12574-1 will provide the performance declared by the manufacturer and that the installer documented the installation. The manufacturer must provide the detailed instructions necessary for satisfactory installation and performance of the product, and the installer must be trained accordingly.

Part 3 provides the test methods for the physical properties required by this part of the International Standard ISO 12574.

The horizontal-application of cellulose fibre loose fill insulation in ventilated roof space of a (timber) wood frame construction is illustrated in ISO 9774 and in Figures 1 and 2 of ISO 12574-2.