This specialized FSK Vapor Barrier is engineered to perform as a high-quality thermal and moisture-resistant shield. The term Foil Scrim Kraft (FSK) refers to its unique, multi-layered composition, which combines the reflective properties of aluminum foil with the durability of a fiberglass scrim and a sturdy kraft paper backing.
Aluminum Foil: Provides a highly reflective surface that reflects heat away, contributing to thermal efficiency. It also serves as a robust moisture barrier to prevent the passage of water vapor.
Fiberglass Scrim: Adds significant tensile strength and tear resistance, making the material durable and easy to handle during installation.
Kraft Paper: This layer provides a stable backing, adding structural integrity to the overall composite and helping to absorb any potential condensation.
This combination makes our fsk facing a reliable solution for demanding applications, ensuring a secure and long-lasting barrier.
The FSK Vapor Barrier is widely used in various insulation applications, including:
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 |
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