Insulation Facing Description

Engineered for professional insulation applications, FKSE-7511B FSK facing combines the benefits of foil, scrim, and kraft to create a tough, reflective barrier layer.

The 2-way scrim reinforcement delivers balanced tensile strength in both machine and cross directions.

The 50gsm kraft paper ensures excellent flexibility and mechanical strength.

The heat-activated polyethylene backing simplifies installation by allowing direct bonding to insulation materials—eliminating the need for separate adhesives.

This FSK foil scrim kraft paper facing is ideal for use in HVAC ducts, pipe insulation, and metal building envelopes, providing dependable protection against heat, moisture, and air leakage.

Features & Benefits:

Superior Thermal Insulation: The aluminum foil layer reflects radiant heat, enhancing energy efficiency in heating and cooling systems.
Excellent Moisture Barrier: The kraft paper layer prevents vapor penetration, reducing condensation and mold growth.
High Strength and Durability: The fiberglass scrim reinforcement improves tear and tensile strength, ensuring long-term reliability.
Easy Heat-Sealing Installation: Polyethylene coating enables fast and clean bonding using heat, saving labor time and adhesive costs.
Safety Compliance: Meets standard fire safety requirements. rovides necessary fire resistance for safe use in HVAC and building

Applications:

The superior strength and thermal performance of this FSK Foil Scrim Kraft Facing make it indispensable in key commercial and industrial environments:

HVAC Duct Wrap Insulation: Provides a high-efficiency outer jacket that serves as a vital vapor barrier and heat reflector, essential for efficient air conditioning systems.
Metal Building Insulation (MBI): Applied to the underside of metal roofs and walls to control condensation and radiate heat away from the building interior.
Pipe and Tank Insulation: Used as a protective and reflective fsk foil jacketing for large-diameter pipes and storage tanks.
Vapor Barrier Facing: Used as the primary fsk paper facing for fiberglass, mineral wool, and other bulk insulation products in wall and roof assemblies.

Insulation Facing Technical Data

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	1/2 inch spacing	12.5mm spacing
Adhesive	Heat-resistance	-	-
Kraft	Natural	30lbs / 3000 ft²	50gsm
Heat-Activated Coating	Polyethylene	0.8 mil	20 micron
Structure	Foil + Scrim + Kraft + Polyethylene
Application Method	Heat-sealing to insulation materials

Properties:

Physical properties	Test Method	Value (English)	Value (Metric)
Basis weight	Scale	20.4lbs / 1000 ft²	100gsm
Permeance (WVTR)	ASTM E96, Procedure A	0.02 perm	1.15 ng/N.s
Tensile Strength-MD	ASTM D828	28.4 lbs / In	125 N/25mm
Tensile Strength-XD	ASTM D828	16lbs / In	70 N/25mm
Burst Strength	ASTM D774	43.5psi	30 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

FAQ:

Q1: What is FSK Foil Scrim Kraft Facing used for?
FSK facing is used as a vapor barrier and reflective insulation facing in HVAC and building insulation systems.

Q2: Can it be applied directly to insulation materials?
Yes. The FKSE-7511B uses a heat-activated polyethylene backing that allows direct thermal bonding.

Q3: Why is 2-way scrim used in FSK Foil Scrim Kraft Facing?
A: The 2-way fiberglass scrim reinforcement is specifically chosen because it provides strong, balanced tensile strength in both the machine and cross directions, making the scrim paper resistant to tearing and punctures while remaining flexible enough for wrapping ducts and curved surfaces.

Q4: What’s the difference between 2-way and 3-way scrim?
2-way scrim provides balanced strength in two directions, ideal for applications needing flexibility and tensile balance.

We provide manufacturer-grade quality with proven thermal and vapor barrier performance. Our FSK Foil Scrim Kraft Facing complies with international insulation standards and offers an excellent balance of strength, flexibility, and powerful heat-sealing adhesion. This makes the FKSE-7511B the most reliable and cost-effective insulation facing solution for streamlined manufacturing and durable field installation.