GFP Insulation

Gas Filled Panel Technology

GFP Insulation, Fi-Foil
Our GFP technology delivers superior insulating capabilities, while offering distinct advantages over conventional insulation products.

Breakthrough Technology.

Funded by a grant from the U.S. Department of Energy, researchers at the Lawrence Berkeley National Laboratory developed GFP thermal insulation technology, which can be used in a host of thermal and acoustic applications in industries ranging from packaging to transportation, aerospace to building.

GFP technology consists of multiple, honeycombed layers of thin, low-e metalized aluminum. These baffled polymer chambers are enveloped by a sealed barrier and filled with either air or a low-conductivity gas. The same proven technology is also used in low-e double- and triple-paned gas filled windows.

Fi-Foil licensed this GFP technology and perfected the manufacturing process for large-scale production. The company now holds the exclusive licensing rights to GFP technology for use in residential and commercial insulation applications.

GFP Insulation is being modeled in military tent applications to reduce energy use and was featured on a prototype floor of advanced sustainable products in New York. GFP won “the insulation product of the year” at the 2011 Global Insulation Conference. GFP Insulation was also featured on the History Channel as an advanced insulation. 

Proven Performance.

Fi-Foil's advanced GFP technology out-performs conventional insulation by many measures, and has been tested in accordance with international ASTM standards.

What makes GFP technology even more attractive is its versatility. Its defining features include:

  • High thermal performance. Able to achieve a variety of R-values using different gases. Maintains R-value over a wide temperature range.
  • Sound. Excellent sound transmission class ratings. Compares favorably with other industry standard insulation products.
  • Compact. The unexpanded product is nearly flat for easy storage and transport.
  • Adaptable. Available in a variety of thicknesses and lengths based on your application.
  • Moisture resistant. Retards moisture and resists mold growth.
  • Clean and safe. No itchy fibers; safe for the installer as well as the home and building owners. Gases are inert and safe for the environment.


  • Gas Filled Insulation Panels
  • GFP Insulation - installed in plenum area
  • GFP Insulation - installed in attic
  • Gas Filled Insulation Panels
  • GFP Insulation - installed in plenum area
  • GFP Insulation - installed in attic

Product Key Specs

Panel 16” O.C. (40.64cm) 24” O.C. (60.96cm)
Weight: Pounds / SQFT .111 .105
Coverage 5 SQFT 8 SQFT
Width Un-expanded 17” (43.2cm) 25” (63.5cm)
Width Expanded 15” (38.1cm) 23” (58.4cm)
Length Un-expanded 66” (1.68m) 66” (1.68m)
Length Expanded 48” (1.22m) 48” (1.22m)
Thickness Un-expanded 1/64” (0.4mm) 1/64” (0.4mm)
Thickness Expanded 1 ½” (3.8cm) 1 ½” (3.8cm)
Weight Un-expanded 8.8 oz 13.4 oz
Weight Expanded 8.9 oz 13.5 oz

Product Test Data

Test Method Description Results
ASTM E-96 Water Vapor Permeance Un-Expanded0.00
ASTM E-84-07 Flammability Flame Spread Rating< 20
Smoke Development Rating< 65
Interior Wall & Ceiling Finish ClassificationClass A
ASTM D-3310 CorrosivityNone
ASTM C-1224-99 (9.2.1 & 9.2.2) Adhesive Performance BleedingNone
PliabilityNo signs of cracking or delamination
ASTM C-1338 Mold & MildewPass
ASTM C-1371 Foil Emittance0.03
ASTM E-2129Contributes to Building Sustainability
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Interested in Breakthrough Insulation Technology?

See how GFP Insulation can enhance your building envelope


Compliance and Approvals: 

Meets LEED and other Green Building Program Requirements
GFP product diagram

What Our Clients Are Saying

Home buyers are looking for quality and price, we hear it every day, and I just gave them what they wanted. I showed the homebuyers how they can save money with my design from day one and into the future.

Sarasota, FL

Project Profiles

GFP Project
Project Information: Building Owner: New York Power Authority General Contractor: Scully Construction Application: GFP (... Read More


Reflective insulation has little effect on heat transfer by conduction through the air between hot and cold surfaces.  Air with an R-per-inch of 5.6 is an excellent insulator when radiation and convection are controlled.  The installation of reflective insulation in an enclosed space reduces thermal radiation to near zero.  When the reflective insulation is installed to subdivide an air-filled region then convection is also reduced.

Yes. The ASHRAE Handbook values are a subset of data from the National Bureau of Standards (NBS).

Reflective insulation is one or more low emittance surfaces installed in an enclosed air space. The more layers within the air space, the better the performance. Reflective insulation in a wall system can be compared to a double or triple pane window with low-e surfaces. Triple pane windows with low e surfaces perform better than a triple pane window without low e surfaces because of the reduction of radiation (low emittance) across the air spaces.  

Air inherently has an R-per-inch value of 5.6, and is an excellent insulator when radiation and convection are controlled. The ASHRAE Handbook has tables with values for various enclosed air spaces (0.5”, 0.75”, 1.5”, 3.5”, etc.) with high emittance surfaces (0.82 for common building materials) and values for air spaces with low emittance surfaces facing the enclosed air space (0.05 for low emittance materials like aluminum).  Simply put, adding a low e material makes the enclosed air space perform better. A multilayer reflective insulation system in a wall cavity improves this system by further reducing radiant heat transfer and adding additional “panes”, a two layer reflective insulation could be compared to a double paned window; a three layer to a triple pane window, and so on..  

The installation of reflective insulation in an enclosed space reduces thermal radiation to near zero. When the reflective insulation is installed to subdivide an air-filled region then heat transfer by convection is also reduced. Fi-Foil has single layer, two layer, three layer and even honey-comb layer reflective insulation products for various building applications, each with different performance levels and attributes for the particular application. These products also work very well with other types of mass insulation as hybrid systems by using the best attributes of each of the technologies (e.g. spray foam is great for air sealing and can have a high R--value per inch of thickness --  fiberglass and cellulose is an inexpensive material to reduce convection in the cavity). In some wall systems, especially wall cavities larger than 1.5”, a combination of reflective insulation with one or more of these mass insulation products, addresses all the modes of heat transfer -- often more cost effectively than one of the technologies used alone.


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