Aluminum foil vapor barrier is laminated 5 layers of structure, the outer layer is aluminum foil and kraft paper.All 5 layers laminated together using a flame-retardant adhesive. The outer layer is aluminum foil and kraft paper, middle layer is the glass fiber layer double side coated with flame-retardant adhesive, it increased tensile strength of FSK, and the aluminum foil and kraft paper are firmly bonded.
Aluminum foil vapor barrier is a flame retardant, vapor-barrier, and insulation facing for the insulation industry. Aluminum foil vapor barrier protects insulation materials as like as a jacket. It is most commonly used to exposed surfaces of Duct wrap, HVAC Ductwork, Exterior wall insulation, Metal building insulation, Pipeline insulation, Hot water tank insulation.
Start with the ceiling then the walls.
Staple the foil vapor barrier to all interior surfaces; the wall and ceiling, not the floor. Overlap your wall foil over the 3″ of the ceiling, helping to keep rising heat near the ceiling.
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 |
Polyethylene |
– |
– |
Kraft |
Natural |
36.6 lbs / 3000 ft2 |
60gsm |
Physical properties |
Test Method |
Value (English) |
Value (Metric) |
Basis weight |
Scale |
19.4 lbs / 1000 ft2 |
95gsm |
Permeance (WVTR) |
ASTM E96, Procedure A |
0.1 perm |
5.75 ng/N.s |
Tensile Strength-MD |
ASTM D828 |
29.5 lbs / In |
130 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 |
Available Roll Width: 1.0m, 2.0m, 1.25m, 1.30m, 1.35m