Self-adhering duct insulation product

A duct insulation system comprising:

• a plurality of duct insulation products, each duct insulation product comprising an insulation material and a moisture barrier material coupled with the insulation material, wherein:
• the moisture barrier material of each duct insulation product covers an entire exterior surface of the insulation material of the respective duct insulation product;
• the moisture barrier material extends continuously between a first edge and an opposed second edge, and beyond a periphery of the insulation material along the first edge, the second edge, or both the first edge and the second edge of the insulation material to form a closure flap that extends beyond a periphery of the insulation material along at least two adjacent edges of the insulation material;
• at least a portion of an inner surface of the closure flap along both of the at least two adjacent edges of the insulation material comprises an adhesive material;
• and
• the adhesive material of the closure flap of a first duct insulation product couples with and secures a second duct insulation product.

A duct insulation manufacturing method comprising:

• coupling an insulation material to a moisture barrier material to form an insulation product, the moisture barrier material forming an outer surface of the duct insulation, wherein:
• the insulation material comprises a plurality of planar segments that are pivotable relative to one another;
• the outer surface of the moisture barrier material comprises a foil facing or a poly facing;
• the moisture barrier material extends continuously between a first edge and an opposed second edge, and beyond a periphery of the insulation material along the first edge, the second edge, or both the first edge and the second edge to form at least one closure flap;
• the at least one closure flap extending beyond a periphery of the insulation material along at least two adjacent edges of the insulation material;
• and
• the moisture barrier material covers an entire exterior surface of the insulation material;
• disposing an adhesive material on the at least one closure flap along the at least two adjacent edges of the insulation material;
• and
• applying a release liner to the adhesive material along the at least two adjacent edges of the insulation material, wherein the release liner protects the adhesive material prior to application.