With research proving its benefits, more contractors are enclosing the crawl space. Closed crawl spaces are more energy efficient; resolve moisture, mold and rot problems; and stop insect infestations. To get the most "bang for the buck," insulate the walls, not the ceiling. If given the choice between the walls and ceiling, the Department of Energy says to insulate the walls, not the ceiling. Heat transfer always moves from hot to cold or from inside the home to outside and down into the crawl space. When insulating, it is best to use an aluminum faced material to reflect heat back into the home. Eliminate the moisture. It is important to install a vapor barrier to keep moisture out. Moisture is what causes many of the problems with crawl spaces such as rot, mold and mildew.
The rim joists around the perimeter of the home should be insulated with breathable, un-faced, formaldehyde-free insulation. Make sure the insulation material is fire resistant. Check your local fire codes regarding exposed insulation. Once your crawl space is properly insulated and closed, you may be eligible for an insulation tax credit through the Energy Star program. Homeowners can receive a tax credit for 30% of the cost of materials up to $1500 the year they install the insulation. Advantage Development Co. is an award winning custom green builder in Asheville NC building fine custom homes for two decades. Call us or visit our website at http://www.advdevco.com/ to learn why we are the better custom builder.