Sebastian Spray Foam
Encapsulation & air sealing

Crawl Space Insulation

Cold floors and musty smells usually start under the house. We seal and encapsulate crawl spaces with closed-cell foam, blocking ground moisture, rim-joist drafts, and the damp air that works its way up into your living space.

Spray gun applying closed-cell foam to seal a crawl space

Why homeowners choose it

  • Closed-cell foam stands up to ground moisture
  • Warmer floors and steadier temperatures upstairs
  • Helps shut down mold, pests, and musty air

How we install it

1

Free in-home assessment

We inspect your attic, walls, or crawl space and find exactly where your home is leaking energy.

2

A clear, fair quote

You get a straightforward plan and price, the right material for each space, no upsell.

3

Clean, expert install

Our expert crew seals the envelope, protects your home throughout, and leaves it spotless.

Best for

Vented crawl spaces, rim joists, dirt-floor spaces, cold floors

Not sure if crawl space insulation is right for your space? We'll assess your home for free and recommend the material that actually fits.

Get a Free Quote

Ready for a warmer, quieter, cheaper home?

Book a free in-home assessment. We'll find exactly where your home is leaking energy and give you a clear, fair plan to seal it.

Call nowFree quote