Foil Scrim Kraft Facing | FSK Foil Insulation

Insulation Facing Description

Foil Scrim Kraft Facing is an engineered composite material built from three distinct layers designed to withstand demanding environmental conditions. The exterior aluminum foil layer provides a highly reflective surface that effectively blocks radiant heat transfer while acting as an impermeable vapor barrier.

Sandwiched within the lamination is a heavy-duty fiberglass scrim reinforcement that imparts exceptional tensile strength and tear resistance, preventing structural damage during installation and long-term service. The underlying kraft paper backing provides stability and easy integration with fiberglass, mineral wool, and foam insulation boards. By combining these materials, foil scrim insulation systems maintain long-lasting thermal integrity, prevent condensation, and lower overall energy consumption.

Features & Benefits
- Effective Vapor Barrier: Prevents moisture from penetrating insulation systems, actively protecting against condensation buildup and hazardous mold growth.
- Radiant Heat Reflection: The high-purity aluminum foil surface reflects radiant heat, significantly enhancing thermal performance and building energy efficiency.
- High Mechanical Durability: The adhesive-reinforced fiberglass scrim layer increases tensile strength, making the facing highly tear-resistant and durable.
- Air Infiltration Protection: The tightly laminated structure offers reliable sealing against air drafts and vapor transmission over time.
- Easy Application & Installation: Flexible laminated construction allows smooth, rapid installation on various insulation systems, reducing labor time and costs.
- Environmentally Conscious: Manufactured from recyclable components, contributing to sustainable and green building insulation solutions.
Applications
- Ductwork Insulation: Highly effective in HVAC systems, providing essential thermal insulation and moisture protection for supply and return ductwork.
- Exterior Wall Insulation: Enhances thermal performance in commercial and residential building insulation systems, reducing thermal loss.
- Metal Building Insulation: Provides a reliable vapor barrier solution for pre-engineered metal buildings, blocking heat transfer and condensation.
- Pipeline Insulation: Ideal for protecting hot and cold industrial pipelines, maintaining precise temperature control and reducing energy loss.
- Hot Water Tank Insulation: Serves as an efficient protective facing for hot water tanks, enhancing heat retention and thermal efficiency.

Insulation Facing Technical Data

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	115gsm
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

FAQ:

Q1: What is Foil Scrim Kraft Facing (FSK Facing)?
A: Foil Scrim Kraft Facing, commonly referred to as foil scrim kraft, is a three-layer laminated composite made of aluminum foil, fiberglass reinforcement scrim, and kraft paper. It acts as an effective vapor barrier, radiant reflector, and protective jacket for thermal insulation.

Q2: How does the fiberglass scrim improve the insulation facing?
A: The embedded fiberglass scrim acts as a high-strength reinforcing grid. It dramatically increases the material's tensile strength, puncture resistance, and tear resistance during demanding job-site handling and installation.

Q3: Does FSK Facing help prevent condensation in HVAC duct systems?
A: Yes. The impermeable aluminum foil layer stops humid indoor air from reaching cold duct surfaces, effectively preventing moisture condensation, water damage, and subsequent mold growth.

Q4: Is Foil Scrim Kraft Facing suitable for outdoor exposed environments?
A: FSK Facing is primarily designed for indoor or enclosed building and HVAC applications. For exposed outdoor applications, additional weatherproofing protective cladding or UV-resistant jacketing is recommended.