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Can you add spray foam insulation to existing walls?
I was thinking about adding spray foam insulation in my home to improve my energy efficiency. Can you add spray foam insulation to existing walls?
Melanie Mergen · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
You can add spray foam insulation to your existing walls, but if you’d prefer not to remove your drywall, you might want to consider injection foam insulation instead.
Traditional spray foam expands quickly, which could exert too much pressure on the backside of a drywall panel if it’s not removed, which could result in cracking or warping.
Injection foam insulation is similar to spray foam, but it’s not quite the same. It expands more slowly and can either be added from the interior of your home, or the exterior by removing some of your siding panels. The injection foam insulation process will still involve some drilling, but if you do so from the inside, you won’t have to completely remove your drywall as you would for spray foam insulation—and a good contractor should be able to patch up those holes for you before they leave.
Installation methods for either insulation type can vary somewhat, so it’s a good idea to talk with prospective contractors about how they’d install the insulation for your situation so you can decide how you want to proceed.
Could your current
homeowners insurance
insulation use better insulation, too? If you’re looking for better coverage at a better rate, the Jerry
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- Gregory R.
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