Pre-cut fibrous insulation blanket

A pre-cut fibrous insulation blanket for custom fitting the insulation blanket into cavities of different widths formed by building framework, comprising:

• an elongated fibrous insulation blanket;
• the fibrous insulation blanket having a length, a width and a thickness;
• the fibrous insulation blanket having a first major surface and a second major surface which each extend for the length and width of the fibrous insulation blanket;
• the fibrous insulation blanket having a first cut extending from the first major surface to the second major surface of the fibrous insulation blanket;
• the first cut extending for the length of the fibrous insulation blanket and being spaced inwardly from both lateral edges of the fibrous insulation blanket;
• the fibrous insulation blanket having adjacent, longitudinally extending sections separated by the first cut;
• a first separable connector holding the adjacent sections of the fibrous insulation blanket separated by the first cut together adjacent the first major surface of the fibrous insulation blanket for handling and being separable by hand along the length of the first cut whereby the fibrous insulation blanket can be handled as a unit for insulating a cavity having a width about equal to the width of the pre-cut fibrous insulation blanket or easily separated by hand into sections at the first cut for insulating a cavity having a width less than the width of the pre-cut fibrous insulation blanket.