Can You DIY Attic Insulation Yourself?

The three main types of insulation are fiberglass, foam, and spray. Fiberglass, the most common, comes as pink rolls (batts) made from glass fibers bonded with a chemical vapor or as spray-in options. Cellulose insulation, made from recycled materials like treated cardboard, is another spray-in option. Spray foam starts as a liquid, expanding to fill gaps and seal cracks. While each type has its advantages, all contain potentially hazardous materials, so proper handling and safety precautions are essential, especially for self-installation.

Inspect your attic to see how much insulation already exists. Look for obvious gaps and check for water damage, leaks, and mold. You can also check to see if the insulation layering is even. Shredded insulation or insulation with holes will need to be replaced. This kind of damage is most often caused by rodents and other pests.

The R-factor is the thermal resistance rating for insulation. The minimum R-factor nationwide is 30; however, you may need to pivot to a higher value based on your climate. Having a too-low R-factor can defeat the purpose of attic insulation. Your home won’t be as comfortable as it could be, and you won’t see much difference in your energy bills. You can check the insulation manufacturer’s R-factor guidelines for your region.

Most of the tools you’ll need for installing attic insulation are probably already available in your basement or garage, such as a tape measure, utility knife, staple gun, yardstick, and caulking gun. Of course, the type of insulation you are using will further recommend what type of tools you will need. Pay special attention to safety equipment such as a dust mask, safety goggles, sturdy work boots, and loose-fitting clothing with long sleeves and pants legs. Again, the type of application method you’re using may require additional or different types of safety tools.

Before installing the insulation, you’ll need to locate and seal any large leaks. Cracks and holes invite water damage and pest infiltration. Examine where the walls meet the floor, behind knee walls, and around dropped soffits and ceilings. There are several types of sealants on the market including weatherstripping, calk, and spray foam.

To reach the desired R-factor for your attic, you will most likely need to layer the insulation. Typically, there should be two layers of insulation to provide maximum benefit. Follow the manufacturer’s instructions on how to cut and place the batts or apply the spray.

When installing attic insulation, make sure you’re not blocking any ventilation. Ventilation is necessary for proper airflow, to keep moisture out, and to prevent your attic from getting too hot. Soffit vents, attic fans, and exhaust vents can keep the air circulating in the attic. Sufficient ventilation and insulation with the best R-factor will keep your attic and home comfortable and improve energy efficiency.

If after reading this you’ve decided that DIY attic insulation isn’t for you, you’re in luck. Premier Roofing is your trusted local roofing contractor in the Atlanta, Charlotte, Raleigh and St. Louis markets. Our professional attic insulation professionals can install the best attic insulation for your climate. Reach out and schedule an appointment or call our team at 1-844-629-ROOF to schedule time with one of our attic installation teams.