What is aluminum foil kraft paper (FSK) insulation layer?

Aluminum foil kraft paper or FSK insulation is a flame retardant and vapor barrier insulation. It is one of the most commonly used materials in the insulation industry today.FSK insulation facing is made of lightweight aluminum foil, which is bonded together with fiberglass scrim and natural brown kraft paper with flame retardant adhesive.

The most common use of FSK insulation is duct wrapping or pipeline board for HVAC pipeline system.Glass wool rolls are also used for insulation of exterior walls and ceilings.

Function: heat insulation, soundproof insulation.

Related accessories: weld pins (stud welding machine is needed)

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