Final answer:
SE is looking for a high value of the R factor when determining if insulating matting is required.
Step-by-step explanation:
In determining if insulating matting is required, SE is looking for a high value of the R factor. The R factor is the ratio of thickness d to conductivity k, and it measures the effectiveness of an insulator. A larger value of the R factor indicates better insulation. For example, a fiberglass batt insulation with an R factor of 19 is better than one with an R factor of 11.