FSK Vapor Barrier FSK-718B is a premium grade Foil-Scrim-Kraft facing with 2-way scrim and 80gsm Kraft, mainly used as a facing & vapor barrier for glasswool / rockwool / foam duct wrap insulation, also a good choice for radiant barrier applications because of its low emissivity.

FSK as a laminated insulation facing protects insulation materials as like as a jacket.FSK Vapor Barrier 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 adhesive, it increased tensile strength of FSK, and the Aluminum foil and Kraft paper are firmly bonded.

FSK Vapor Barrier FSK-718B is most commonly used to exposed surfaces of Duct wrap, HVAC Ductwork, Exterior wall insulation, Metal building insulation, Pipeline insulation, Hot water tank insulation.

FSK: Foil-scrim-kraft, Scrim=Yarn

 

INSULATION FACING COMPOSITION

Composition

Description

Value (English)

Value (Metric)

Foil

Aluminum

0.28 mil

7 micron

Reinforcing- MD

Fiberglass

1/2 inch spacing

12.5mm spacing

Reinforcing-XD

Fiberglass

1/3 inch spacing

12.5mm spacing

Adhesive

Polyethylene

–

–

Kraft

Natural

49lbs / 3000 ft2

80gsm

 

INSULATION FACING PROPERTIES

Physical properties

Test Method

Value (English)

Value (Metric)

Basis weight

Scale

23.5 lbs / 1000 ft2

20.1595%gsm

Permeance (WVTR)

ASTM E96,

Procedure A

0.1 perm

5.75 ng/N.s

Tensile Strength-MD

ASTM D828

34 lbs / In

150 N/25mm

Tensile Strength-XD

ASTM D828

18.2lbs / In

80 N/25mm

Burst Strength

ASTM D774

58psi

40 N/cm2

Low temperature

Resistance

ASTM D1790

4 hrs @

-40℉ (-40℃)

Remains Flexible

No Delamination

Remains Flexible

No Delamination

High temperature

Resistance

ASTM D1790

4 hrs @

+240℉ (+116℃)

Remains Flexible

No Delamination

Remains Flexible

No Delamination

Emissivity

ASTM E408

-0.03

-0.03

 

Available Roll Width: 1.0m, 2.0m, 1.25m, 1.30m, 1.35m

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