Now we apply Thermo-Shield® on the roof dropping the surface temperature to 90F (32C). The new Heat Flow would be: 90T - 70F/2"/0.16 WmK = 20/12.5 = 1.6 BTU/ft2/hr
A savings of 71%
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| You can reduce heat flow? Here is an illustration of how Thermo-Shield® can reduce heat flow (Q=Temperature Differential in Fahrenheit/Insulation Thickness in inches/Insulation Conductivity) through a roof. Assume it is a hot summer day and the average temperature on a roof is 140F (60C); the roof has 2" foam insulation with a K factor of 0.16 and the inside temperature of the building is kept at 70F (21C) by the airconditioning. The Heat Flow would be: 140F - 70F/2"/0.16 WmK = 70/12.5 = 5.6 BTU/ft2/hr
Now we apply Thermo-Shield® on the roof dropping the surface temperature to 90F (32C). The new Heat Flow would be: 90T - 70F/2"/0.16 WmK = 20/12.5 = 1.6 BTU/ft2/hr A savings of 71% |
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