Should You Replace Old Insulation in Spring?

Spring is when we clean, declutter, and prepare for the months ahead—but there’s one area most homeowners overlook: your insulation.

At Metro NY Insulation, we often get the same question this time of year: “Should I replace old insulation in my attic or walls?”

The answer? If it’s not doing its job, spring is the perfect time to fix it.

Let’s break it down, the way we would if we were walking through your home together.

What Counts as “Old Insulation”?

If your home was built before the 1990s and the insulation hasn’t been touched, it’s probably outdated. Even homes built in the early 2000s may have:

• Settled or compacted cellulose

• Fiberglass batts full of dust or moisture

• Insulation missing from key areas like rim joists or knee walls

We’ve pulled out matted, moldy, rodent-damaged insulation from dozens of Bergen and Westchester homes—and the difference after replacing it is night and day.

Why Spring Is the Best Time to Replace It

• Mild weather means quick installs with less disruption

• Prevents heat buildup in summer by sealing now

• Humidity and mold protection starts early

• Rebates & energy credits are easiest to apply before peak season

• Comfort issues are fresh in your mind from winter

It’s also easier to access attics and crawlspaces before summer heat becomes a safety issue for installers.

Signs You May Need to Replace Insulation

• Uneven temps between floors

• Rooms that get too hot, too fast

• Higher-than-usual spring energy bills

• Evidence of rodents or past water intrusion in your attic or crawl space

• It’s been 20+ years since your insulation was touched