Product Details
What is Between Joist Insulation?
EcoFoil® pre-cut rolls of Refelctive Foil/Bubble Insulation consists
of two layers of poly bubble insulation which is then covered on both
sides by a reflective metalized/aluminum composition. It provides
superior protection against radiant heat transfer and also provides an
effective vapor barrier if properly sealed with foil tape.
Where is Between Joist Insulation Used For?
Pre-Cut Reflective Bubble Insulation is designed to fit in between
the floor joists of a home or building. It is pre-cut at 24" wide, very
light and features a 1" tab on both sides for easy stapling during
installation. This insulation does create an R-Value but it is
determined by the neutral air space in the assembly of the insulation.
The more neutral air space that you create between the insulation and
the living space, the higher the R-Value will be.
This pre-cut bubble insulation also fits perfectly in between the
studs of a stud wall. It works great for basement wall insulation
because it creates a vapor barrier.
Download the Between Joist Installation Instructions(PDF)
Size: 24"x125' Roll - Double Bubble Foil/Foil
Product Specifications
Download a printable Spec Sheet for this product here: Double Bubble Joist Insulation
| Nominal Thickness | 5/16" |
| Fire Rating | Class 1/ Class A (ASTM E84-09) |
| Temp Range | -50F to 180F (ASTM C411) |
| Emissivity | 0.057 (ASTM C1371-04A) |
| Reflectivity | 0.943 (ASTME903) |
| Water Vapor Permeability.... | 0.02 Perms (ASTM E96) |
| Resistance to Fungi | Does Not Promote (ASTM C1149) |
| Corrosiveness | Pass (ASTM D3310-00) |
| Thermal Resistance (3.5" cavity)... | R-15.2 (Heat Flow Down), R-8.5 (Horizontal Heat Flow) |
