What is FSK insulation facing?

Posted on 05/01/2023


FSK Insulation Facing

FSK: Foil-scrim-kraft, Scrim=Yarn

FSK Insulation facing is an outer surface of insulation materials. It is additional layer made of reinforced Aluminum foil or PP film. Foil-scrim-kraft insulation facing is an insulation product that is both a vapor barrier and a flame retardant. FSK insulation facing, also known as Foil-Scrim-Kraft facing, is a type of insulation material commonly used in HVAC (Heating, Ventilation, and Air Conditioning) systems.

FSK Insulation facing is laminated 5 layers of structure, the outer layer is Aluminum foil and Kraft paper. The middle layer is the Glass fiber layer double side coated with Flame-retardant adhesive, it increased tensile strength of FSK, and the Aluminum foil and Kraft paper are firmly bonded. It consists of three main components:

Foil: The outer layer is typically made of aluminum foil, which provides a reflective surface. This foil layer helps to reduce radiant heat transfer, improving the overall insulation efficiency.

Scrim: The middle layer is a reinforcing mesh or fabric, usually made of fiberglass. The scrim adds strength and durability to the facing, making it more resistant to tearing or puncturing.

Kraft: The inner layer is made of kraft paper, which provides additional structural support and serves as a vapor retarder. The kraft paper helps prevent moisture transmission through the insulation, preventing condensation and potential damage to the underlying materials.

FSK insulation facing has a vapor barrier or a vapor retarder (the facing) that helps prevent moisture from moving from one space to another. The facing also helps protect the surface, hold the insulation together and fasten the material to building components. FSK insulation as a laminated insulation facing protects insulation materials as like as a jacket.

FSK insulation facing is commonly used to cover and protect insulation materials such as fiberglass or mineral wool batts, duct wrap, or rigid foam boards. It is often used in commercial and industrial applications to improve thermal performance, control moisture, and enhance fire resistance in HVAC systems.

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