For example, fiberglass insulation is cost-effective but less airtight, while spray foam insulation ... Use fiberglass batts cut to fit snugly between studs. Add rigid foam boards on the backside ...

“Our cellulose insulation runs about 84 cents per square foot,” says Harrah. “If I had a choice between fiberglass, foam, and ...

Fiberglass batt insulation, closed-cell spray foam, or blown-in cellulose insulation can all work well. Spray foam, for instance, can offer both insulation and a degree of air sealing, which is ...

For example, fiberglass insulation is cost-effective but less airtight, while spray foam insulation is highly ... Mixing types, like adding fiberglass batts over loose-fill insulation or blown ...