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panels and Insuladd insulating paint additive mixed into house paint. 3/20/08  A series of tests were performed using a 100 watt heat lamp positioned 18” from the exterior of 20” x 20” pieces of standard foam home insulation R-3 rated panels. An R-3 ˝ inch foam panel was painted on one side with one coat of Insuladd Thermal Block Low VOC insulating interior primer. The coverage rate was based on 225 to 250 sq ft per gallon of primer. The second panel was left uncoated. Each panel being tested had a heat flux transducer attached to the backside of the panel. Each panel was exposed to the infrared heat lamp array for 30 minutes by which time the heat flux had stabilized and no increases were occurring. The exterior surface temperature of the both R-3 panels averaged 107 deg F throughout all of the tests. The air temperature during the tests was 77 deg F The 30 degree temperature differential was used as is specified by a somewhat similar ASTM C-236 test which is used to calculate the “R” value of a material. The tests were run 6 times and the results of the tests were averaged to get the following results: Uncoated R-3 panel:
Calculated Heat Flux = 13.33 BTU hr2 R-3 panel coated on exterior with Insuladd Thermal Block primer (heat lamp side):
Calculated Heat Flux = 8.17 BTU hr2 Test Results: The energy savings obtained from the use of Insuladd calculates to an added R-1.74 or a 61% improvement in the energy efficiency of the R-3 foam panel. |
