Expert Spray Foam Insulation for Rim Joists

Stop Energy Loss & Moisture Intrusion

Cold spots, drafts, and moisture infiltration at the rim joist can undermine your home’s comfort, energy efficiency, and structural health. At Fresh Coast Foam, we seal and insulate your rim joists with precision-applied closed-cell spray foam—eliminating air leaks and water damage for good.

Why Rim Joist Insulation Matters

Rim joist leaks can account for up to 10–15% of your home’s heating and cooling loss. Airtight spray foam pays for itself through lower utility costs.

Slash Energy Bills

Uninsulated rim joists let frigid winter air sneak into your home and sap heat from living spaces. Say goodbye to icy floors and chilly baseboards.

Eliminate Drafts & Cold Floors

Gaps at the sill plate invite condensation, wood rot, and mold growth—threatening your home’s structure and your family’s health.

Prevent Moisture & Mold

Closed-cell foam adds rigidity to floor joists and sill plates, reinforcing your home’s foundation against shifting soils and seasonal movement.

Enhance Structural Integrity

How FCF’s Spray Foam Installation Works

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Our Rim Joist Insulation Process

Interior of an unfinished room with exposed wooden framing and spray foam insulation on the walls and ceiling.

  1. Detailed Inspection
     We examine your basement perimeter for leaks, pests, and wood decay.

  2. Surface Preparation
     Cracks and gaps are pre-sealed; any old insulation is removed.

  3. Precision Foam Application
     Closed-cell polyurethane foam is sprayed directly into the rim joist cavities—expanding to fill every void and bond to wood.

  4. Clean Finish & Verification
     Once cured in seconds, we trim any excess foam flush with your joists.

 

Spray Foam vs. Traditional Insulation

Comparison chart of insulation materials, including features like air sealing, moisture barrier, R-Value, installation speed, and durability for spray foam, fiberglass batts, and rigid foam boards.
  • Three workers inside a building under construction, some on a scaffold and one on the ground, installing insulation along the walls.

    "Highly Recommend! Vey professional and friendly. They did an outstanding job and cleaned up everything."

    Becky K.

  • A person wearing protective gear, including a helmet with a face shield, a blue jumpsuit, and gloves, is using a spray gun to apply insulation or foam inside a wooden structure or wall during construction or renovation.

    "So happy with the work that we had done. Great communication and left the job spotless. Highly recommend."

    Kristen M.

  • Construction site with building materials, ladders, tools, and a yellow forklift inside a large partially finished room with metal ceiling and insulation panels on the walls.

    "Fresh Coast Foam did a phenomenal job on our new construction. Highly recommend.

    Brian M.

Frequently Asked Questions

  • Fiberglass compresses and gaps easily, losing R-value and allowing air and moisture through. Spray foam fills every cavity and creates a permanent seal.

  • Yes. After curing (in seconds), the foam is inert and non-toxic, providing a healthy barrier against pests and mold.

  • Most homeowners see a measurable drop in heating/cooling costs within the first billing cycle after insulation.

  • Absolutely. Our closed-cell foam performs reliably in Michigan temperatures down to 20°F.

  • Costs depend on the linear footage and access, but rim joist spray foam typically pays for itself in energy savings within 1–2 years. Contact us for a personalized quote.

Ready for a More Comfortable & Efficient Space?

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Fill out the form or give us a call and request your free quote!

231.510.9513