Foil faced vapor barrier is laminated 5 layers of structure, the outer layer is Aluminum foil and Kraft paper.The middle layer is the Glass fiber layer double side coated with adhesive, it increased tensile strength of Foil-Scrim-Kraft, and the Aluminum foil and Kraft paper are firmly bonded.
Foil faced insulation vapor barrier is the best type of insulation for retaining heat in the winter and keeping heat out in the summer. Since radiant barriers and reflective insulations are typically made from a metal foil or metalized film, they also act as excellent moisture vapor barriers. Foil faced vapor barrier also works as a barrier for methane, radon, termites and other vermin.
Foil faced vapor barrier is most commonly used to exposed surfaces of Duct wrap, HVAC Ductwork, Exterior wall insulation, Metal building insulation, Pipeline insulation, Hot water tank insulation. Also used as a insulation facing & vapor barrier for glasswool / rockwool / foam duct wrap insulation, also a good choice for radiant barrier applications because of its low emissivity.
Composition |
Description |
Value (English) |
Value (Metric) |
Foil |
Aluminum |
0.28 mil |
7 micron |
Reinforcing- MD |
Fiberglass |
2 inch spacing |
8 /100mm |
Reinforcing-XD |
Fiberglass |
3 inch spacing |
12 / 100mm |
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 |
17lbs / In |
75 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