Patent ID: 8161703

Claim:
An insulation product comprising a compressible mineral fiber insulation element having a first major surface opposed to a second major surface, and having side surfaces connecting the first and second major surfaces and defining a thickness of the insulation element, said thickness being at least 10 cm, said product having a first facing which is attached to at least a part of said first major surface and which is provided with at least one extension flange having an outer end and where said outer end is not directly secured to said insulation element and where an outer surface of said extension flange has a coefficient of friction in relation to a wood surface which is smaller than a coefficient of friction of a side surface of the mineral fiber insulation in relation to the same wood surface, said product having a second facing on said second major surface of said insulation element which is provided with flanges extending beyond said second major surface, and prepared for being used for attachment of the insulation product, wherein neither said first facing or said second facing is directly attached to a major part of each of the side surfaces of the insulation element, and said at least one extension flange and said flanges of said second facing are not directly joined.