This type of insulation is ideal for attics, basements, and crawl spaces. It provides great protection against heat loss in the winter and keeps your home cooler in the summer. R49 insulation also helps reduce noise from outside and improves the overall comfort of your home. Our R49 insulation is available in a variety of thicknesses to suit your needs. We also offer free shipping on all eligible orders, so you can be sure you are getting the best possible deal.