Can I Foam My Attic Myself?

Identification

• Liquid foam insulation can be sprayed, foamed-in, poured or injected into your attic. Spray foam insulation quickly conforms to the tiny gaps and spaces inside your attic and fills them to provide an effective air barrier. These types of insulation usually contain phenolic, polyurethane, cementitious or polyisocyanurate. Slow-curing liquid foam insulation must be poured or injected into your attic, and is typically more difficult to install, making it a less common choice for do-it-yourself projects.

Pre-Installation

• Before adding spray foam insulation to your attic, it is best to take time to properly seal all air leaks. In attics, the most common areas for air leaks are the attic hatch, around soffit vents and gaps in ceilings. Seal the large gaps inside your attic first, using caulk or foam board insulation to fill all gaps where air can escape. Attic hatches or drop-down stairs often leak around the frame, so be sure to caulk these spaces. Once the large gaps are sealed, work on the smaller gaps, sealing them with caulk. Check around electrical wires, duct work and vent pipes for air leaks and seal them, as well. If any water stains are visible, search for areas where moisture could be coming in and seal those as well.

Installation

• Installing your own attic insulation is possible if the right type of insulation is chosen. Most homeowners find sprayed foam insulation easy to install. Liquid foam insulation such as slow- curing liquid foam is difficult to install and often requires special equipment. Most do-it-yourself homeowners find sprayed foam insulation the easiest to install. These products are sprayed into your attic with small- to medium-sized spray containers. Foamed in place or pressure-sprayed foam insulation is also easy to install yourself. Spray foam insulation expands after spraying and fills the shape of the space or cavity, sealing it.

Considerations

• Installing spray foam insulation in your attic is an effective way to reduce energy costs and keep your home comfortable. Be sure to wear knee pads, disposable coveralls, a hat and gloves to keep insulation from irritating your skin. Avoid working in your attic during the warm summer months, as attics are hot and get hotter as the day goes on. Drink plenty of water to avoid becoming dehydrated while working in your attic, as well.