DEAR TIM: I am currently installing rigid foam insulation around the exterior of my foundation. I’m installing three inches of it to a depth of 10 to 13 inches below grade to keep the heat in ...

Rigid foam boards used to insulate buildings can prevent energy loss, making homes more efficient at keeping warm or cool. The advantages in energy efficiency, however, are undercut by ...

In the case of panels made of extruded polystyrene (XPS)—a closed-cell foam suitable for wet or dry conditions—that gas has been hydrofluorocarbon-134a (HFC-134a).

If you're looking for a low-cost way to make your garage more bearable during summer's hottest months, then this hack could be the perfect choice.