2-Way scrim provides balanced tensile strength in both directions. 50 gsm Kraft is a common weight for FSK facings, providing a good balance of strength and flexibility. The 2-way scrim and 50 gsm Kraft paper provide excellent strength and tear resistance, making the facing durable and easy to handle. The heat-activated polyethylene backing allows for direct bonding to insulation materials using heat, simplifying the manufacturing process and eliminating the need for additional adhesives.
This FSK foil scrim kraft facing is specifically designed to provide excellent barrier properties, including resistance to moisture and vapor, making it ideal for use in building and construction applications, particularly for duct wrap, metal building insulation, pipe insulation, and general insulation facing in the HVAC and insulation industries.
1. Thermal Insulation: The foil layer in FSK facing reflects heat and reduces heat transfer, improving the overall thermal insulation performance of the building envelope.
2. Moisture Barrier: The kraft paper layer acts as a vapor barrier, preventing moisture infiltration and condensation within the insulation system. This helps protect the building from moisture-related damage.
3. Strength and Durability: The scrim layer adds strength and tear resistance to the FSK facing, ensuring its longevity and performance in various insulation applications.
4. Fire Resistance: FSK facing materials are often designed to meet fire safety regulations and standards, providing additional protection against fire hazards.
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 |
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 |