FSK foil-faced insulation is a type of insulation material commonly used in commercial and residential buildings for thermal insulation and vapor barrier purposes. This laminated insulation facing typically consists of a layer of aluminum foil (Foil) laminated to a layer of fiberglass scrim reinforcement (Scrim) and a layer of kraft paper (Kraft). The aluminum foil layer provides a reflective surface that helps to reflect heat and light, while the fiberglass scrim adds strength and durability to the insulation. The kraft paper layer provides additional protection and structure.
FSK foil-faced insulation offers a combination of thermal insulation, moisture control, and reflective properties in a single product. It helps to improve the energy efficiency of buildings, reduce heating and cooling costs, and create a more comfortable indoor environment.
FSK foil-faced insulation is commonly used in HVAC ductwork, metal buildings, industrial applications, and residential construction where a combination of thermal insulation and vapor barrier properties is required.
Physical properties |
Test Method |
Value (English) |
Value (Metric) |
Basis weight |
Scale |
14.8 lbs / 1000 ft2 |
72.5 gsm |
Permeance (WVTR) |
ASTM E96, Procedure A |
0.02 perm |
1.15 ng/N.s |
Tensile Strength-MD |
ASTM D828 |
16 lbs / In |
70 N/25mm |
Tensile Strength-XD |
ASTM D828 |
15.5 lbs / In |
68 N/25mm |
Burst Strength |
ASTM D774 |
50.4psi |
35 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 |
-0.05 |
-0.05 |
Composition |
Description |
Value (English) |
Value (Metric) |
Foil |
Aluminum |
0.60 mil |
15 micron |
Reinforcing- MD |
Fiberglass |
1/5 inch spacing |
5mm spacing |
Reinforcing-XD |
Fiberglass |
1/5 inch spacing |
5mm spacing |
Heat-Activated Adhesive |
Polyethylene |
1 mil |
25 micron |