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Advanced Soleil Insulation

The below stucco walls, tested with the same thickness and heat source, demonstrated how the ORRI, with 10% less R-Value required 45% less energy than conventional insulation to maintain an interior temperature at 70° F. .


  1. Left: the exterior stucco, superheated 45° F above the ambient air temperature, conducts most of its heat into the adjacent polyurethane insulating sheeting. Right: the stucco radiates into the adjacent air space most of its heat, which is then reflected and exhausted.
  2. In both walls, depending on the material, color and texture of exterior surfaces, some small amount of radiation will be reflected.
  3. Left: the insulation sheeting adjacent to the stucco transfers nearly all of the heat by conduction, or by radiation allowed through voids, to the exterior surface of the fiberglass. Right: Radiant heat is reflected away from the fiberglass by the exterior surface of the radiant barrier, and the radiant and conductive heat energy absorption is inhibited by the Low-E interior surface of the radiant barrier. This substantially reduces the surface heat of conventional insulation behind the radiant barrier.
  4. Lower exterior surface temperature of the conventional insulation allows it to transfer less heat to building interior.
  5. Left: the insulation sheeting adjacent to the stucco – even if wrapped with a radiant barrier, as some are for additional fire protection – cannot reflect radiation as on the Right, because a radiant barrier cannot reflect radiation without the adjacent air space.
  6. The exterior air space also allows outside air to enter a filtered grill to ventilate out heat buildup between building components. Cool air from crawl space can dramatically minimize or pre-cool exterior walls to create a net cooling supply at no cost, while
  7. Heat and moisture are naturally exhausted or mechanically vented, expediting cooling.
  8. The exhausted heat, at no cost, may be used in a heat exchanger or as heat for another system (e.g. domestic hot water or heat pump).
  9. Without an interior adjacent air space, the Low-E interior surface of the radiant barrier could not inhibit the conducted energy, which would otherwise convert more radiation when it reached an exterior wall or roof surface.


In advanced versions of ORRI, the air spaces adjacent to either side of a radiant barrier could be cost-efficiently mass-produced in less than 3/4-inch boards or rolls, depending on climate and other requirements. ORRI could be manufactured for new and existing buildings with finished surfaces and attached to conventional insulation or added as a stand-alone wrap or board.

The advanced versions offer:

The savings in energy costs with ORRI technology could more than halve most current retrofitting amortization periods by allowing existing buildings to achieve 50% to more than 80% reductions in energy consumption for heating and cooling. For applications in older office buildings click on Masonry Buildings or Curtain Wall Buildings. The Company's Venting Channel Reflective Systems could be made so light they could be effectively applied under roofs, decks, shingles, etc., without replacing existing insulation or straining the structure.

ORRI Code Recommendations

At a demonstration of ORRI, five engineers with the CA Energy Commission (CEC) and the CA Building Standards Commission (CBSC) recognized the potential energy savings and moisture elimination that can be achieved with configurations of radiant barriers and protected air spaces. Michael Leonard is available to repeat the demonstration, answer questions, and provide additional information. All five engineers stated that, as ORRI could be tested and measured, they would recommend with good practice credit its inclusion Title 24 of The Energy Efficiency Standards for Residential and Nonresidential Buildings section in the California Building Standards Code. However, currently the CEC has no test to measure a vented insulation. The engineers' request for CEC funding to develop an ASTM (American Society for Testing and Materials) test protocol was turned down. Currently, Energy Conservancy ( is attempting to raise money for this purpose.

The CEC and CBDC both work closely and influentially with the International Code Council, coordinating the California Building Code and the International Building Code. Both building codes cannot begin to adequately address exterior surface temperatures as necessary to meet the energy savings goals set by the California state legislature because there is no protocol and test to measure the reflection and evacuation of radiant heat. Today heat from the ambient air temperature is all that can be currently measured and tested for code purposes.

Many states and national organizations have pledged to meet the “2030 Challenge” for “Zero Net Energy” (ZNE) buildings to produce as much energy as they consume by the year 2030. The California Energy Commission has adopted the challenge for commercial buildings and the more stringent challenge by the year 2020 for residential buildings. Buildings achieve ZNE with today's lenient code insulation standards by offsetting an excessive consumption of grid energy with a prodigious production of solar energy! However, for example, ORRI could eliminate approximately 31,000 of West Village's (University of California at Davis, CA) 70,000 solar panels needed to offset fossil energy to reach ZNE, or could send that much saved energy into the common grid! Click on West Village Study.