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Custom Insulation Boston Worcester Blog

Crawl Spaces: The Hidden Energy Leaks Spray Foam Can Fix

19 September 2025

Custom Insulation - Spray Foam

When homeowners think about energy efficiency, the first places that come to mind are often the attic, windows, or doors. But there’s another area that quietly drains comfort and money from your home—the crawl space.

Crawl spaces are notorious for air leaks, drafts, and moisture problems. Without proper insulation, they allow cold air to seep in during winter and hot, humid air to rise in during summer. This makes your heating and cooling systems work overtime, increasing energy bills and reducing indoor comfort.

That’s where spray foam insulation makes a difference. Unlike fiberglass or other traditional insulation, spray foam expands to fill every gap and seal out unwanted air and moisture. This creates a tight thermal barrier, protecting your home from fluctuating temperatures and helping to prevent mold and mildew caused by damp crawl spaces.

Benefits of insulating crawl spaces with spray foam include:

  • Lower energy bills thanks to reduced air leakage.
  • Improved indoor air quality by keeping out dust, allergens, and moisture.
  • A more comfortable home year-round with fewer drafts and cold floors.
  • Long-lasting protection that doesn’t sag or settle over time.

Your crawl space might be out of sight, but it doesn’t have to stay a hidden source of wasted energy. With spray foam insulation from Custom Insulation Company, Inc., you can transform this overlooked area into a shield of efficiency and comfort.

Ready to stop hidden energy leaks in your home? Contact Custom Insulation Company, Inc. today to schedule a consultation.

Insulation helps keep your house cool in the summer!