Which one is better in the attic: cellulose or rigid foam board?

— Felix Laredo, TX

Answered by Randy Potter on January 27, 2011

What is the safest insulation for a home?

— Tabitha Myerstown, PA

Answered by Danny Kelly on January 7, 2011

Adding attic insulation

— Matthew Tannehill

Answered by Andrea Foss on January 21, 2010