What Makes a Building Product Green
Even though steel conducts heat more readily than wood, steel entry doors that include foam insulation and are installed in wooden frames with quality weatherstripping generally provide better energy performance than wood entry doors. In choosing an insulated entry door, consider the R-value of the insulation, weatherstripping, and glazing materials.
For insulating our buildings, vacuum insulation panels may not be cost-effective, but they will become common in other applications
I’ve recently worked on revising the...