Frequently Asked Questions

Will fiberglass insulation promote mold growth?

No. Fiberglass doesn’t hold water very well unless it is soaked and it does not provide food for biological growth. Fiberglass becomes dirty when unclean air and dust flows through it, not because of mold.

Fiberglass insulation works like trapped air pockets. Compressing the insulation actually decreases the amount of air trapped and reduces its R-value and effectiveness.

Adding insulation to one part of a house won’t increase the “pressure” on heat losses through other parts, but poorly insulated areas will continue to be major sources of temperature fluctuation in a home.

R-value refers to the insulation’s ability to resist heat flow and keep your home’s temperature better controlled. As the R-value increases, the strength of the insulation also increases. Recommended R-values change based on where in the house you’re adding insulation, if the area of your home has been previously insulated or not, and where you live. For example, an uninsulated attic in Alaska should have insulation installed with R-values 49-60, whereas an uninsulated attic in Hawaii only needs insulation with R-values 30-49 installed.

More than 90 percent of homes in America lack adequate attic insulation and wall insulation, which can increase monthly energy bills and reduce comfort. Adding house insulation with the right R-value can make a big difference.

Insulation Warranties

We provide a 1-year craftsmanship warranty to ensure insulation installation is done right, along with a lifetime product warranty on Owens Corning loose fill insulation. Both the service and the insulation is backed by The Home Depot.

Trusted Installers

The Home Depot’s attic insulation contractors and installers are local, licensed, insured, and have undergone a thorough background-screening process before conducting a free in-home consultation.

Flexible Financing

We offer a wide range of flexible financing options to help complete your installation including a 12 Month No Interest Home Depot’s Consumer Credit Card and Project Loan, plus one competitive price on any attic insulation project.


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