While this all sounds well and good, there is a host of issues when installing fiberglass insulation in the crawlspace in this fashion. This is due to a term known as “The Stack Effect”.

Krieger says there are three types of insulation commonly used in crawl spaces – polyiso, spray foam, and fiberglass. Polyiso is a closed-cell, rigid foam board insulation that typically comes ...

The crawl space under my 1910 home is just exposed dirt and leftover building materials. I need to add a vapor barrier and wonder about the best one. The foundation consists of granite slabs and ...

Insulating your entire attic or loft enhances both energy efficiency and overall comfort in your home. During the winter, take notice of the rooms of your home that feel drafty and cold. Focus on ...

My wife and I live in a 50-year-old house in North Carolina, and our crawl space can get quite funky from dampness and humidity. At least some of the current fiberglass insulation is in need of ...

DEAR TIM: The crawl space under my 1910 home is just exposed dirt and leftover building materials. I need to add a vapor barrier and wonder about the best one. The foundation consists of granite ...

Mohammed El-Ghoul, owner of Home Energy Saving Solutions in Rockville (301-842-8818; marylandenergyaudit.net), said encapsulating a crawl space almost always eliminates musty smells.

Polyiso is a closed-cell, rigid foam board insulation that typically comes in 1”, 2”, and 4” thickness. THERMAX™ and Dow “blue board” are the two most common types of polyiso insulation.