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post frame building insulation r value

Increase R-Value

Reflect Up to 95% Radiant Energy with Fi-Foil’s RBI Shield.

easy to install insulation rolls for post frame buildings

Easy Installation

Quick & Simple Setup with Adhesive Double-Sided Tape.

industrial strength insulation fi foil icon

Industrial Strength

Robust Insulation Built to Last with Encapsulated Air Cells.

garage door insulation fi foil icon

Garage Door Insulation

Transform Your Garages Climate with Premium Insulation.

The Smart Choice for Any Garage

Fi-Foil’s Garage Door Insulation System is the perfect way to insulate new and existing garage doors. This system is easy to install, consisting of Fi-Foil’s RBI Shield and a super adhesive double-sided tape.

RBI Shield is available in white or aluminum. The encapsulated air cells serve as an effective thermal break, while the outer layer(s) of metalized film reflect up to 95% of all radiant energy.

Fi-Foil’s Garage Door Insulation System keeps your garage cooler in the summer and warmer in the winter.

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Width of Roll Coverage sq. ft.
24" 250

Test Method Description Results
ASTM E-96 Water Vapor Permeance 0
ASTM D-3310 Corrosiveness No Evidence of Cracking or Pitting
ASTM C-1224-03, Section Pliability No Evidence of Cracking or Pitting
ASTM C-1224-03, Section Bleeding & Delamination No Evidence of Bleeding or Delamination
ASTM E408-71 (2002) Thermal Performance Emisivity 0.03
Reflectivity 97%
Service Temperature 50 degrees F to 180 degrees F
ASTM E-84 / 2599 Flammability Class A
ASTM C-1338 Mold & Mildew Pass
Reflective / Reflective Flame Spread Single Bubble: 0
Double Bubble: 0
Smoke Development Single Bubble: < 50
Double Bubble: < 50
Reflective / Poly Flame Spread Single Bubble: 0
Double Bubble: 0
Smoke Development Single Bubble: < 50
Double Bubble: < 50
ASTM D 638-01 Tensile Strength MD Single Bubble: 33.0 lb/in
Double Bubble: 38.9 lb/in
Tensile Strength TD Single Bubble: 21.4 lb/in
Double Bubble: 27.6 lb/in
Tear Strength MD Single Bubble: 2.6 lbf
Double Bubble: 6.9 lbf
Tear Strength TD Single Bubble: 3.2 lbf
Double Bubble: 7.3 lbf
Compression Strength Single Bubble: 57.3 lbf
Double Bubble: 279 lbf

Rest Easy We Meet or Exceed Code & Compliance Standards



R-values relate more to mass type insulations or insulating materials that are installed in an enclosed air space. Radiant barriers are typically designed to work in vented attics, so their performance is not rated with an R-value; however, R-values are not the ONLY way to quantify resistance to heat flow. For example, a tree or an awning doesn't have an R-value, but it certainly can keep you cool. To simply put it, a radiant barrier is like putting a shade tree in your attic. Technically speaking, Silver Shield™ Radiant Barrier reflects 97% of the radiant heat and only emits 3% into the attic so unlike R-value, the lower the "E-value", or the less that it radiates into the attic, the better the radiant barrier. Silver Shield™ is the best-rated radiant barrier on the market.

A water vapor retarder may or may not be part of the design depending on the climate zone and the other building components used in that particular section of the building envelope. If air containing water vapor is allowed to come in contact with a cold surface, then condensation will likely occur. Water vapor transmission can also occur even if the building envelope is air sealed or has an effective and properly installed air barrier. Some insulation systems should include a water vapor retarder and some should allow vapor transmission. Building codes and climate zones generally dictate the use of a water vapor retarder -- in short, the envelope is a system and the use should be carefully considered by the building designer.


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