The answer is no. Vapor barrier, however is an important part of preventing moisture in your basement or crawl space. It is moisture that can lead to mold growth, odors, structural damage, pests and other damage.

• Energy efficiency - save money on your heating and cooling bills
• Serves as a vapor barrier
• Serves as a sound barrier
• Mold retardent
• 2009 - 2010 Tax Credit Available - Read Below:
The American Recovery and Reinvestment Act of 2009
On February 17, 2009, President Obama signed "The American Recovery and Reinvestment Act of 2009" that made some significant changes to the existing energy tax credits that apply to reflective insulations. The highlights are:
The tax credits that were previously effective for 2009, have been extended to 2010 as well.
The tax credit has been raised from 10% to 30%.
The maximum credit has been raised from $500 to $1500 for the two year period (2009-2010) for all improvements combined.