Make sure to use slabs that are the right size for each insulation application. Waste pieces can be used for e.g. extra insulation for the roof underneath the blowing wool. Waste pieces can also be used as filling together with filling earth and as an insulation layer; they do not harm the environment.

Empty plastic packaging (PE-LD) can be recycled or destroyed by burning.

Stone wool waste and stone wool packaging waste can also be discarded in most normal waste dumping grounds unless this has been specifically banned by the local authorities. 

Stone wool from demolition projects can be destroyed as waste pieces.