| CPC F24F 13/0263 (2013.01) [F16L 59/026 (2013.01); F16L 59/028 (2013.01); F16L 59/147 (2013.01)] | 20 Claims |

|
1. A duct insulation product comprising:
an insulation material;
a moisture barrier material coupled with the insulation material, the moisture barrier material forming an outer surface of the duct insulation product and covering an entire exterior surface of the insulation material, wherein the outer surface of the moisture barrier material comprises a foil facing or a poly facing, wherein:
the moisture barrier material extends continuously between a first edge and an opposed second edge, and comprises at least one closure flap along the first edge, the second edge, or both the first edge and the second edge of the moisture barrier material, the closure flap extending beyond a periphery of the insulation material along at least two adjacent edges of the insulation material; and
at least a portion of an inner surface of the closure flap comprises an adhesive material disposed along the at least two adjacent edges of the insulation material; and
a release liner applied atop the adhesive material along the at least two adjacent edges of the insulation material.
|