According to this map, Mill Valley is in zone 5. Assuming your heating system is natural gas, the recommended insulation level for a crawl space is R-13, walls are R-13 and attic space is R-38.

Fallen insulation provides an air break. The entire point of installing insulation under the floor is to prevent cold air from the crawl space from entering the home from below.

“Most homes, unfortunately, do not have insulation in the crawl space,” said Krieger. “It is mostly done on a retro fit basis, and is something we deal with quite frequently.

When installing vapor barriers in crawl spaces, the vapor barrier must lap up onto the side walls of the foundation. The vapor barrier can be permanently secured to the walls by using 3/4-inch ...

4. Prevents Ice Dams In colder climates prone to freezing temperatures, putting insulation into the joist space of your attic crawl space can safeguard against the formation of ice dams caused by ...

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 ...

News Home and garden Ask The Builder: Vapor barrier and insulation in crawl space will mean warmer floors Sat., Sept. 9, 2017 This is a pretty normal creepy crawl space.

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 ...