1. What is the thermal conductivity of: and provide several factors (applicable one or several of these products) that could impact the thermal conductivity values you provide. a. Dow Styrofoam SM® extruded polystyrene insulation b. EnergyGuard Polyiso c. EnergyGuard™ NH Polyiso d. Roxul CavityRock® stonewool insulation e. R-22 EcoTouch® PINK® FIBERGLAS® Insulation f. Grizzly Gold Medium Density closed cell spray foam.

The thermal conductivity of various insulation materials is as follows:

a. Dow Styrofoam SM® extruded polystyrene insulation: 0.033 W/mK b. EnergyGuard Polyiso: 0.022 W/mK c. EnergyGuard™ NH Polyiso: 0.022 W/mK d. Roxul CavityRock® stonewool insulation: 0.035 W/mK e. R-22 EcoTouch® PINK® FIBERGLAS® Insulation: 0.035 W/mK f. Grizzly Gold Medium Density closed cell spray foam: 0.021 W/mK

Several factors can impact the thermal conductivity values of these products:

1. Temperature: The thermal conductivity of most materials changes with temperature. For example, as the temperature increases, the thermal conductivity of insulating materials usually decreases.

2. Moisture Content: The presence of moisture can significantly increase the thermal conductivity of a material because water has a higher thermal conductivity than air.

3. Density: The density of the material can also affect its thermal conductivity. Higher density materials usually have higher thermal conductivity.

4. Thickness: The thickness of the material can affect the rate of heat transfer, but not the thermal conductivity itself.

5. Ageing: Over time, the thermal conductivity of some materials can increase due to ageing effects, such as compaction, moisture absorption, or degradation of insulating gases.

Please note that the values provided are approximate and can vary based on the specific formulation and manufacturing process of the product. Always refer to the manufacturer's data for the most accurate information.