   Lot 40 - Fiberglass insulation house: 2x4 wood construction at 16' O.C. construction, R-13, 3 storey bedroom house with an unfinished basement. |    Lot 41 - Icynene house: identical to Lot 40, but with Icynene sprayed in all wall cavities and in the basement and first floor header areas. | Background In March of 1988 a comparison was done using two identical houses in Mississauga, Canada, with the same but reversed floor plan and insulated with two different types of insulation. The purpose was to demonstrate the insulating and air sealing superiority of Icynene® . A blower door test and thermographic scanning of a wall section (approximately 4 feet) right below the window was performed during a cold night on each home to demonstrate the air leakage. A thermographic picture is an infrared image used to demonstrate differences in temperature. Red shows warmth, blue shows cold. Results Lot 41 with Icynene® had one third less leakage than the fiberglass house. The thermal scanning of the fiberglass house showed more air leakage around doors, windows, electrical outlets, plumbing and hard to reach area like bath tubs. In areas where Icynene was sprayed there was a significant reduction in air leakage. As you can see from the thermal picture of Lot 41 the wall cavity is warmer than that of the same spot in lot 40. Air infiltration in the fiberglass house is robbing the structure of heat and reducing its energy efficiency. A blower door test and thermographic scanning of a wall section (approximately 4 feet) right below the window was performed during a cold night on each home to demonstrate the air leakage. A thermographic picture is an infrared image used to demonstrate differences in temperature. Red shows warmth, blue shows cold. |
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