Homeowners often ask if a vapor barrier is necessary ... the attic include water stains on the ceiling below, mold or mildew growth, damp or compressed insulation, and visible moisture or frost ...

A dirt floor in a basement or crawl space can be a major source of moisture ... it's not a solid barrier, but it involves covering the floors, walls, and sometimes even the ceiling.

Proper insulation is one of the most effective ways to enhance the comfort, energy efficiency, and overall value of your home ...