Why Hudson Valley Homeowners Are Switching From Fiberglass to Spray Foam

Fiberglass batts aren't bad insulation. They're just incomplete. They slow heat transfer, but they don't stop air movement — and in an older home, air movement is where most of the energy loss happens.

Here's the problem: fiberglass is permeable. Air finds its way around it, through gaps in the framing, around outlets, along rim joists, and through every unsealed penetration in the building envelope. You can have R-19 batts in your walls and still feel drafts in January because the R-value only measures thermal resistance, not air sealing.

Spray foam does both. It insulates and air-seals in a single application, expanding into gaps and irregular cavities that batts never touch. Homeowners who switch consistently notice the difference in two ways: lower utility bills and a house that feels more even — no more cold corners, no more one room that never quite warms up.

For Hudson Valley homes built before 1980, fiberglass batts were often installed without any vapor barrier and have compressed or degraded over the decades. If your home is in that category, it's worth having someone take a look at what's actually in your walls and attic before another heating season starts.

We offer free assessments throughout Dutchess, Putnam, Ulster, Orange, and Westchester County. Call (845) 319-9169 or visit sprayfoamhv.com.