Homeowner Q&A: When Should You Reinsulate with Spray Foam?

Spray foam insulation is one of the most effective ways to create a more energy-efficient, comfortable home—but like anything in your house, it doesn’t last forever. One of the most common questions we hear from Massachusetts homeowners is: “How do I know when it’s time to reinsulate with spray foam?”

If your home is drafty, your energy bills keep climbing, or rooms are unevenly heated or cooled, your insulation might be underperforming. Even high-quality spray foam can degrade over time, especially if it was installed decades ago, exposed to moisture, or applied incorrectly.

Another red flag? If your insulation is visibly shrinking, cracking, or pulling away from surfaces in the attic, basement, or walls. That means air is getting in—and your money is going out. Even newer homes may need attention if the original insulation wasn’t applied properly or was never designed to handle New England’s extreme seasonal temperature swings.

Reinsulating with spray foam can significantly improve energy efficiency, reduce HVAC strain, and boost indoor comfort—all while sealing out drafts, moisture, and allergens. It's also a smart upgrade if you're planning a remodel, adding an addition, or converting an attic or basement into livable space.

At Custom Insulation Company, Inc., we offer expert evaluations to help you determine whether your current insulation is still doing its job—or if it’s time for an upgrade. Our team uses top-quality spray foam products and proven techniques to ensure long-term results that you can feel year-round.

Not sure what’s hiding behind your walls or above your ceiling? Give us a call. We’re here to help you make informed decisions that protect your home and save you money.